Tibial implant multi-blade shapers and shaper guides

Abstract

Systems, methods, devices, and apparatuses are described herein for preparing a bone surface, such as a tibia, for receiving a surgical implant. The system may include a tibial shaping guide configured for fixation to the bone, potentially via fixation pins. The guide defines an anterior guide recess, which may include interlocking flanges and recesses. The system also includes at least one tibial shaper having a body section and a head section with shaper blades. The shaper head section may possess guide flanges and guide recesses configured to matingly engage with the interlocking features within the guide's anterior guide recess. This engagement constrains lateral movement of the tibial shaper relative to the guide during bone preparation. Multiple tibial shaper embodiments, potentially including horizontal, vertical, or dual blade configurations, may be provided, allowing for procedural flexibility such as sequential use. The system facilitates accurate and controlled bone shaping.

Description

TIBIAL IMPLANT MULTI-BLADE SHAPERS AND SHAPER GUIDESPRIORITY

[0001] This application claims the benefit of and priority to U.S. Provisional Application filed on April 15, 2024 and having application serial number 63 / 634,373, and U.S. Provisional Application filed on April 15, 2024 and having application serial number 63 / 634,382 the entirety of each of said applications being incorporated herein by reference.FIELD

[0002] Embodiments of the present disclosure generally relate to the field of surgical implants. More specifically, embodiments of the disclosure relate to apparatuses and methods for tibial implant shapers with multiple blade types and shaper guides for treating tibial defects or revisioning previous implants.BACKGROUND

[0003] The tibia, or shinbone, is the larger bone of the lower leg, extending down towards the foot. At its lower end, it forms the upper and inner part of the ankle joint. The talus is a crucial bone in the foot, situated directly below the tibia, connecting the leg bones to the rest of the foot. The primary joint articulation between these two bones, the tibiotalar joint, is a component of the ankle joint, allowing for the up-and-down motion (dorsiflexion and plantarflexion) essential for walking and movement. Implants in this area typically resurface or replace parts of the lower tibia and the upper talus within the ankle joint.

[0004] Damage or degeneration of the tibiotalar joint is the main reason for needing an ankle implant, often as part of a total ankle replacement or sometimes an ankle fusion procedure. Severe arthritis, particularly osteoarthritis, rheumatoid arthritis, or post-traumatic arthritis resulting from previous ankle fractures or injuries, commonly leads to cartilage loss, pain, and stiffness in this joint. Significant ankle instability, deformity, bone defects, or the failure of previous ankle surgeries (necessitating revision) can also necessitate implants to restore function and alleviate pain by replacing the damaged joint surfaces of the lower tibia and upper talus.

[0005] During the surgical procedure, challenges can arise with the precise physical placement and insertion of tibial and talar implants. Accurately preparing the bone surfaces of the tibia and talus to accurately match the implant shapes is critical but can be difficult. Inserting and aligning the implant components requires careful alignment; incorrect positioning, even by small amounts, can affect joint mechanics. If the implants are not securely fixed or optimally positioned from the start, this poor initial attachment can lead to significant problems over time, such as micromotion at the implant-bone interface, uneven load distribution causing accelerated wear or implant breakage, eventual loosening from the bone, subsidence (sinking) of the components, joint instability, and ultimately, the potential need for complex revision surgery.SUMMARY

[0006] An apparatus, systems, and methods are provided for an improved tibia implant with a tapered stem and dual fixation holes for treating tibial defects. In some embodiments, a tibial shaping system, includes a tibial shaper, including a shaping body section, and a shaper head section, wherein the shaper head section includes a blade configured for shaping a tibia bone, a pair of guide flanges, and a pair for guide recesses, wherein each guide recess is disposed between a guide flange and a blade, a tibial shaping guide, including a body with an anterior side, wherein the anterior side includes at least a plurality of fixation pin holes, and an anterior guide recess, wherein the anterior guide recess is dimensioned to mate with the tibial shaper such that the tibial shaping guide restricts the side motions of the tibial shaper during tibia bone shaping.

[0007] In some embodiments, the tibial shaper can move vertically toward the tibia bone during an impaction process.

[0008] In some embodiments, the tibial shaping guide further includes a pair of interlocking recesses and a pair interlocking flanges.

[0009] In some embodiments, the pair of interlocking recesses and interlocking flanges are located within the anterior guide recess.

[0010] In some embodiments, the pair of guide flanges are configured to interlock with the interlocking recesses.

[0011] In some embodiments, a tibial shaping system, wherein the pair of interlocking flanges is configured to interlock with the pair of guide recesses.

[0012] In some embodiments, the interlocking flanges and guide recesses are dimensioned to reduce lateral movement during an impaction process.

[0013] In some embodiments, the pair of guide flanges and interlocking recesses are dimensioned to reduce lateral movement during an impaction process.

[0014] In some embodiments, the plurality of fixation pin holes includes at least two fixation pin holes configured for engaging with two parallel pins.

[0015] In some embodiments, the plurality of fixation pin holes further includes one fixation pin hole configured for engaging with an oblique pin.

[0016] In some embodiments, the two parallel pins are impacted into a tibia bone.

[0017] In some embodiments, the oblique pin is impacted into a tibia bone at an angle oblique to the two parallel pins such that the tibial shaper is affixed to the tibia bone upon engaging with the two parallel pins and oblique pin.

[0018] In some embodiments, the tibial shaping guide further includes a stopping portion.

[0019] In some embodiments, the stopping portion is configured to rest against a tibia bone.

[0020] In some embodiments, the shaping body section is configured to engage with an impactor frame for receiving impaction strikes.

[0021] In some embodiments, the engagement between the shaping body section and the impactor frame is via a quick-connect interface.

[0022] In some embodiments, the tibial shaping guide has a base with a shaper body height, and the tibial shaper has a shaper head height.

[0023] In some embodiments, the shaper body height and shaper head height are equal.

[0024] In some embodiments, a tibial shaper includes a shaping body section, and a shaper head section, wherein the shaper head section includes a blade configured for shaping a tibia bone, a pair of guide flanges, and a pair for guide recesses, wherein each guide recess is disposed between a guide flange and a blade.

[0025] In some embodiments, a tibial shaping guide includes a body with an anterior side, wherein the anterior side includes at least a plurality of fixation pin holes, and an anterior guide recess, wherein the anterior guide recess is dimensioned to mate with a tibial shaper such that the tibial shaping guide restricts the side motions of the tibial shaper during tibia bone shaping.BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings refer to embodiments of the present disclosure in which:

[0027] FIG. 1A illustrates a perspective view of a tibial shaping guide, in accordance with various embodiments of the disclosure;

[0028] FIG. IB illustrates a rear view of a tibial shaping guide, in accordance with various embodiments of the disclosure;

[0029] FIG. 1C illustrates a top-down view of a tibial shaping guide, in accordance with various embodiments of the disclosure;

[0030] FIG. ID illustrates a bottom-up view of a tibial shaping guide, in accordance with various embodiments of the disclosure;

[0031] FIG. 2 illustrates a plurality of tibial shapers with multiple types of blades, in accordance with various embodiments of the disclosure;

[0032] FIG. 3A illustrates a perspective view of a tibial shaper in accordance with various embodiments of the disclosure;

[0033] FIG. 3B illustrates a top-down view of a tibial shaper in accordance with various embodiments of the disclosure;

[0034] FIG. 3C illustrates a left side view of a tibial shaper, in accordance with various embodiments of the disclosure;

[0035] FIG. 3D illustrates a bottom-up view of a tibial shaper, in accordance with various embodiments of the disclosure;

[0036] FIG. 4 illustrates a perspective view of a shaping system with an impactor frame, in accordance with various embodiments of the disclosure;

[0037] FIG. 5 illustrates a perspective view of a tibial shaper being inserted into a tibial shaping guide, in accordance with various embodiments of the disclosure;

[0038] FIG. 6 illustrates a perspective view of a tibial shaper fully inserted into a tibial shaping guide, in accordance with various embodiments of the disclosure;

[0039] FIG. 7 illustrates a right side view of a tibial shaper fully inserted into a tibial shaping guide, in accordance with various embodiments of the disclosure; and

[0040] FIG. 8 illustrates a right side view of a tibial shaper fully impacted into a tibia bone in accordance with various embodiments of the disclosure.

[0041] While the present disclosure is subject to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and will herein be described in detail. The invention should be understood to not be limited to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure.DETAILED DESCRIPTION

[0042] Embodiments of the present disclosure generally relate to systems and methods within the field of orthopedic surgery, particularly concerning the preparation of bone surfaces, such as the tibia bone or talar bone, for receiving surgical implants. The disclosed apparatuses may include tibial shaping guides configured for fixation to bone, and various tibial shapers featuring different types of shaper blades (e.g., a horizontal blade, a vertical blade, a dual blade). Additionally, an impactor frame might be utilized in conjunction with these components.

[0043] In various embodiments, the tibial shaping guide can be secured to target anatomy, for example using fixation elements like a left parallel pin, a right parallel pin, and an oblique pin inserted through corresponding fixation pin holes in the guide. The tibial shaping guide may possess internal features, such as an anterior guide recess possibly containing interlocking recesses and interlocking flanges, designed to receive and guide a selected tibial shaper. This guided interaction, potentially involving corresponding guide recesses and guide flanges on the tibial shaper, might restrict lateral motion and ensure precise alignment during bone preparation. In many embodiments, the guide recess is disposed between a guide flange and a blade. The tibial shaper might also feature a quick-connect portion for engagement with an impactor frame, which can facilitate the application of controlled impaction forces / strikes. The depth of shaping may be limited by features like a stopping portion on the guide or by the interaction of the guiding components.

[0044] The availability of tibial shapers with different blade configurations (e.g., a horizontal blade tibial shaper, a vertical blade tibial shaper, a dual blade tibial shaper) can allow for procedural flexibility in preparing the bone surface. For instance, a surgical method might involve the sequential use of single-blade shapers (e.g., a vertical blade shaper followed by a horizontal blade shaper, or vice versa) to initiate bone removal, potentially followed by the use of a dual blade shaper to finalize the shaping process. This sequential approach could offer advantages in terms of ease of use or precision compared to utilizing only a single shaper type.

[0045] A method for preparing a bone surface, such as a tibia bone or talar bone, for receiving an implant may be performed utilizing embodiments of the disclosed system. Such a method could commence with positioning a tibial shaping guide onto the target bone site. The tibial shaping guide might then be affixed to the bone using fixation elements, such as inserting a left parallel pin, a right parallel pin, and an oblique pin through corresponding fixation pin holes into the underlying bone. Subsequently, a first tibial shaper, for example, a vertical blade tibial shaper, might be selected and potentially engaged with an impactor frame via its quick-connect portion. This first tibial shaper could then be inserted into the secured tibial shaping guide, wherein the guide's internal features constrain the shaper's movement. Impaction force may then be applied, possibly via the impactor frame through a series of strikes, driving the vertical blade into the boneuntil the desired initial shaping is achieved or advancement is halted, potentially by a stopping portion or other limiting features.

[0046] Following this, the first tibial shaper might be removed, and a second tibial shaper, perhaps a horizontal blade tibial shaper, could be inserted into the guide and impacted similarly to perform additional shaping. In some procedural variations, a dual blade tibial shaper might be used subsequently to finalize the preparation. Once the desired bone preparation is complete, the final tibial shaper and the tibial shaping guide may be removed, leaving the bone surface prepared for potential implant placement.

[0047] As those skilled in the art will recognize, preparing bone surfaces, such as the tibia or talus, for surgical implants can present several challenges that may be addressed by various embodiments disclosed herein. Achieving the precise geometry, depth, and alignment required for optimal implant fit and long-term stability might be difficult using freehand techniques or less constrained instrumentation, potentially leading to inaccuracies or inconsistencies. Controlling the shaping instrument to prevent excessive bone removal or unwanted lateral movement during impaction can also be problematic, risking damage to the bone or suboptimal preparation.

[0048] Furthermore, some existing tools or methods for creating complex implant interfaces might be procedurally demanding or less adaptable to specific surgical situations. Embodiments of the disclosed system, incorporating a stable tibial shaping guide fixed to the bone and mating tibial shapers with features like guide flanges and guide recesses interacting with interlocking flanges and interlocking recesses in the guide, may mitigate these issues by providing enhanced control over alignment, restricting lateral motion, and potentially offering defined limits to impaction depth via features like a stopping portion. Additionally, the provision of multiple tibial shaper types, such as those with horizontal, vertical, or dual blades, may allow for increased procedural flexibility and potentially simplify the task of achieving the desired bone shape through sequential or targeted use.

[0049] The embodiments depicted in the figures are provided by way of example only. The drawings are not necessarily to scale, and relative proportions or specific dimensions shown are illustrative and may be modified. Various features depicted in the figures may be combined, omitted, or rearranged in different ways, and equivalents of the depicted structures andconfigurations are intended to be encompassed within the scope of this disclosure. The description accompanying the figures is intended to be illustrative and not limiting; the scope of the invention is defined by the appended claims.

[0050] Materials suitable for constructing the components described herein, such as the tibial implant base and the tibial implant cover, may include various biocompatible materials known in the art for orthopedic implants. Examples can include, but are not limited to, metals such as titanium, titanium alloys, cobalt-chromium alloys, stainless steel; polymers; ceramics; or combinations thereof. The selection of a specific material may depend on factors like structural requirements, desired biocompatibility, wear characteristics, manufacturing methods (e.g., additive manufacturing for lattice structures, machining for solid components), and interfacing properties, and the examples provided are not intended to be exhaustive.

[0051] Positional and directional terms such as "anterior," "posterior," "superior," "inferior," "medial," "lateral," "top," "bottom," "upward," "downward," and the like are used herein for convenience to describe the embodiments as typically oriented or viewed, often with reference to standard anatomical positioning or the implant's orientation as depicted. Unless otherwise specified or required by the context, these terms are not intended to be strictly limiting or absolute. For instance, "superior" may refer to a direction generally towards the head in anatomical terms or away from the bone interface surface of the base component, but the implant could potentially be oriented differently during use or analysis.

[0052] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. It will be apparent, however, to one of ordinary skill in the art that the invention disclosed herein may be practiced without these specific details. In other instances, specific numeric references such as “first implant,” may be made. However, the specific numeric reference should not be interpreted as a literal sequential order but rather interpreted that the “first implant” is different than a “second implant.” Thus, the specific details set forth are merely exemplary. The specific details may be varied from and still be contemplated to be within the spirit and scope of the present disclosure. The term “coupled” is defined as meaning connected either directly to the component or indirectly to the component through another component. Further, as used herein, the terms “about,” “approximately,” or “substantially” forany numerical values or ranges indicate a suitable dimensional tolerance that allows the part or collection of components to function for its intended purpose as described herein.

[0053] Referring to FIG. 1A, perspective view of a tibial shaping guide 100, in accordance with various embodiments of the disclosure is shown. This tibial shaping guide 100 may be representative of various apparatuses suitable for use in surgical procedures involving tibial implants. As depicted in the embodiment shown in FIG. 1A, the tibial shaping guide 100 can present a structure designed to interface with anatomical features and potentially other surgical instruments, facilitating aspects of a surgical workflow. The overall configuration shown illustrates one possible form the tibial shaping guide 100 might take in certain embodiments.

[0054] In various embodiments, the tibial shaping guide 100 may include an anterior side 140 and a posterior side 130. The anterior side 140 could feature one or more fixation pin holes 170, which might be configured to receive fixation elements (not shown) for securing the tibial shaping guide 100 relative to a bone, such as a tibia (500) or talar bone (600). In some embodiments, the tibial shaping guide 100 can also define an anterior window 110, potentially located centrally on the anterior side 140. This anterior window 110 might provide access or visibility to underlying structures or could serve as a channel for other instruments.

[0055] Further examining the embodiment depicted in FIG. 1 A, the anterior window 110 may be associated with an anterior window flange 115. This anterior window flange 115 could provide structural support or define a pathway within the anterior window 110. Additionally, in many embodiments, the tibial shaping guide 100 might incorporate an anterior recess 120. This anterior recess 120, potentially situated inferior to the anterior window 110 in the orientation shown, could be configured to accommodate or interact with corresponding features on a bone or another surgical tool, such as a tibial shaper (300).

[0056] In certain embodiments, the tibial shaping guide 100 may possess features that can facilitate alignment or interlocking with other components. As illustrated in FIG. 1 A, the structure can include one or more interlocking recesses 125, which might be positioned adjacent to an interlocking flange 126. These features can be configured to engage with reciprocal features on another device, ensuring proper positioning or stability during a procedure. The tibial shapingguide 100 may also include a fibular notch 150, the function or positioning of which could vary in additional embodiments depending on surgical requirements or anatomical considerations.

[0057] Although a specific embodiment for a tibial shaping guide 100 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 1A, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the tibial shaping guide 100 may be fabricated from a medical-grade polymer or metal alloy suitable for surgical use. The elements depicted in FIG. 1A may also be interchangeable with other elements of FIGS. IB-8 as required to realize a particularly desired embodiment.

[0058] Referring to FIG. IB, a rear view of a tibial shaping guide, in accordance with various embodiments of the disclosure is shown. The embodiment depicted in FIG. IB illustrates the tibial shaping guide 100 from an opposing perspective relative to FIG. 1A, potentially highlighting features associated with its posterior side 130 and overall structure. In various embodiments, the tibial shaping guide 100 may present different external contours or features depending on the specific application or intended interaction with surrounding anatomy or instrumentation.

[0059] As depicted in the embodiment shown in FIG. IB, the tibial shaping guide 100 can include a left side 160 and a feature identified as the fibular notch 150 (representing the right side from this posterior perspective). The posterior side 130 may form a continuous surface or could incorporate specific geometric features. In many embodiments, the relative dimensions and shapes of the posterior side 130, left side 160, and fibular notch 150 might be configured to complement the target anatomy, such as a tibia bone (500) or talar bone (600), potentially providing stability or alignment during use.

[0060] In some embodiments, features visible from the anterior side (140) may also be discernible or inferred from the rear view. For instance, portions of the anterior window 110 and the anterior window flange 115 might be visible through the structure or implied by its overall form. The presence of at least two fixation pin holes 170 can also be seen on the structure's upper portion in this view, consistent with their position on the anterior side (140) as shown in FIG. 1A, reinforcing their potential role in securing the tibial shaping guide 100.

[0061] In certain embodiments, FIG. IB may also illustrate aspects related to the overall dimensions of the tibial shaping guide 100, such as the shaper body height 190. This dimension, representing the vertical extent of a portion of the guide's body, could be significant for proper mating with a tibial shaper (300), potentially ensuring alignment or controlling the depth of shaping. The configuration shown represents one possible set of proportions and features; other embodiments might vary.

[0062] Although a specific embodiment for a tibial shaping guide 100 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. IB, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the posterior side 130 might feature textured surfaces to enhance grip or stability in certain applications. The elements depicted in FIG. IB may also be interchangeable with other elements of FIGS. 1A, and 1C-8 as required to realize a particularly desired embodiment.

[0063] Referring to FIG. 1 C, a top-down view of a tibial shaping guide 100, in accordance with various embodiments of the disclosure is shown. This perspective may offer insights into the internal features and overall footprint of the tibial shaping guide 100, potentially illustrating how it might interact with other components or rest upon an anatomical surface. The configuration depicted represents one possible arrangement of features in certain embodiments.

[0064] As depicted in the embodiment shown in FIG. 1C, the tibial shaping guide 100 can present an anterior side 140 and a posterior side 130. Viewed from the top, the relationship between the left side 160 and the fibular notch 150 (representing the right-side surface) can be further appreciated. In many embodiments, the internal space of the tibial shaping guide 100 might define a pathway or channel, potentially configured for receiving a corresponding instrument like a tibial shaper (300).

[0065] In some embodiments, specific features relevant to guiding or alignment may be visible in this top-down view. The interlocking recesses 125 and adjacent interlocking flanges 126 can be seen, potentially positioned within a broader channel or recess like the anterior guide recess (120). These interlocking recesses 125 and interlocking flanges 126 might be dimensioned toengage with mating features on another component, possibly restricting side-to-side or lateral motion during a surgical procedure involving bone shaping.

[0066] Furthermore, in certain embodiments as illustrated in FIG. 1C, the tibial shaping guide 100 may incorporate a stopping portion 180. This stopping portion 180 could be positioned, for example, near the anterior side 140, and might serve to limit the travel of an inserted instrument or could be configured to abut against a target anatomical structure, such as a tibia bone (500). The specific location and configuration of the stopping portion 180 can vary in additional embodiments to achieve desired mechanical limits or positioning.

[0067] Although a specific embodiment for a tibial shaping guide 100 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 1C, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the dimensions or geometry of the interlocking recesses 125 and interlocking flanges 126 could be adapted for different tibial shaper designs. The elements depicted in FIG. 1C may also be interchangeable with other elements of FIGS. 1A-1B, and ID-8 as required to realize a particularly desired embodiment.

[0068] Referring to FIG. ID, a bottom-up view of a tibial shaping guide 100, in accordance with various embodiments of the disclosure is shown. This view may illustrate the features on the underside of the tibial shaping guide 100, potentially revealing aspects related to its interface with a bone surface or interaction with other instruments from below. The specific arrangement depicted in FIG. ID represents one possible embodiment.

[0069] As seen in the embodiment shown in FIG. ID, the tibial shaping guide 100 can indicate its anterior side 140 and posterior side 130 from an inferior perspective. The left side 160 and the fibular notch 150 (right side surface) define the lateral extent in this view. A surface denoted as the right side 155 is also visible, representing a portion of the superior or external structure positioned next to the fibular notch 150 viewed from below. In many embodiments, the underside geometry might be configured to provide stable seating on a prepared anatomical site.

[0070] In some embodiments, features within the underside, such as the anterior recess 120, are clearly visible in FIG. ID. This anterior recess 120 could be dimensioned to accommodateanatomical variations or to receive a specific portion of a tibial shaper (300) or other tool. Also visible within the anterior recess 120, in certain embodiments, are the interlocking recesses 125 and interlocking flanges 126. These features might function to guide and constrain the movement of a mating component, potentially limiting lateral motion during shaping procedures.

[0071] The overall structure and shape depicted in FIG. ID further illustrate the spatial relationship between the various sides and recesses of the tibial shaping guide 100 in this embodiment. The configuration of the anterior recess 120, including the interlocking recesses 125 and interlocking flanges 126, may be particularly relevant for achieving a guided interface with a tibial shaper, thereby facilitating accurate preparation of a tibia bone (500). However, as those skilled in the art will recognize, variations in these features could exist in additional embodiments.

[0072] Although a specific embodiment for a tibial shaping guide 100 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. ID, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the surface defining the anterior recess 120 could incorporate features to facilitate bone cement adhesion in alternative procedures. The elements depicted in FIG. ID may also be interchangeable with other elements of FIGS. 1A-1C, 2-8 as required to realize a particularly desired embodiment.

[0073] Referring to FIG. 2, a plurality of tibial shapers with multiple types of blades, in accordance with various embodiments of the disclosure is shown. This figure may illustrate distinct tibial shaper embodiments within a system, such as a horizontal blade tibial shaper 200A, a vertical blade tibial shaper 200B, and a dual blade tibial shaper 200C. The provision of multiple shaper types with differing blades (210, 220, 230) could facilitate various surgical techniques or sequences for preparing a tibia bone (500) or the like.

[0074] As depicted in the embodiment shown in FIG. 2, the horizontal blade tibial shaper 200A features a horizontal blade 210. This configuration might be suited for shaping bone along a generally horizontal plane. In some procedural approaches, the horizontal blade tibial shaper 200A could be utilized during specific phases of bone modification, perhaps in sequence with other shaper types, such as initiating a shaping process or refining features created by a different blade geometry.

[0075] Similarly, in some embodiments, the vertical blade tibial shaper 200B incorporates a vertical blade 220, potentially designed for shaping bone along a generally vertical plane. This vertical blade tibial shaper 200B could be employed complementarily to the horizontal blade tibial shaper 200A in certain surgical methods. For instance, one possible, non-limiting method might involve using the vertical blade tibial shaper 200B initially, followed by the horizontal blade tibial shaper 200A (or vice-versa), to begin the bone preparation.

[0076] Furthermore, in certain embodiments, the system may include a dual blade tibial shaper 200C with a dual blade 230. This dual blade 230 might offer combined or more complex shaping capabilities. In procedural variations where initial shaping is performed using single-blade shapers (such as 200A and 200B), the dual blade tibial shaper 200C could potentially be used subsequently to finalize or complete the bone preparation. Offering this plurality (200A, 200B, 200C) may enhance surgical flexibility and potentially ease the shaping process compared to relying solely on a single shaper type.

[0077] Although specific embodiments for tibial shapers 200 A, 200B, 200C for carrying out the various steps, processes, methods, and operations described herein are discussed with respect to FIG. 2, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, these tibial shapers could be provided in various sizes to accommodate different patient anatomies or surgical needs. The elements depicted in FIG. 2 may also be interchangeable with other elements of FIGS. 1 A-1D, 3 A-8 as required to realize a particularly desired embodiment.

[0078] Referring to FIG. 3A, a perspective view of a tibial shaper 300 in accordance with various embodiments of the disclosure is shown. This tibial shaper 300 may represent one specific embodiment, such as the dual blade tibial shaper (200C), although its general structural features might be shared, in part or whole, with other embodiments like the horizontal blade tibial shaper (200 A), vertical blade tibial shaper (200B), or the like. The tibial shaper 300 generally comprises distinct functional sections, including a shaper head section 310 and a shaper body section 320.

[0079] As depicted in the embodiment shown in FIG. 3 A, the shaper head section 310 is located at the distal end (relative to a user holding the instrument) and may incorporate the cutting or shaping features. Visible in this view are the shaper blades 315, configured for shaping bonematerial. The specific geometry and arrangement of the shaper blades 315 could define the type of shaper (e.g., horizontal, vertical, or dual blade). In many embodiments, the shaper head section 310 might also include features for guiding or alignment, such as guide flanges (312) or guide recesses (311) although not explicitly labeled in this specific view.

[0080] In some embodiments, the tibial shaper 300 includes a shaper body section 320 extending proximally from the shaper head section 310. This shaper body section 320 might function as a handle or shaft for manipulating the instrument. It could incorporate features such as the shaper body side 329, which can be configured for gripping. In certain embodiments, the shaper body section 320 may be designed to engage with other components of a surgical system, such as an impactor frame (400) for applying force during the shaping process.

[0081] Furthermore, in many embodiments, the proximal end of the shaper body section 320 may terminate in a connection feature, such as the quick-connect portion 330 shown in FIG. 3A. This quick-connect portion 330 could be configured to provide a rapid and secure attachment mechanism, potentially interfacing with an impactor handle or frame (400). Such an interface might facilitate efficient transfer of impaction forces to the tibial shaper 300 during use. The overall structure enables the tibial shaper 300 to be guided, potentially by a tibial shaping guide (100), while performing bone shaping.

[0082] Although a specific embodiment for a tibial shaper 300 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 3A, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the shaper body section 320 could incorporate ergonomic grip enhancements or alternative materials. The elements depicted in FIG. 3A may also be interchangeable with other elements of FIGS. 1 A-2, and 3B-8 as required to realize a particularly desired embodiment.

[0083] Referring to FIG. 3B, a top-down view of a tibial shaper in accordance with various embodiments of the disclosure is shown. This view provides further detail on the features of the tibial shaper 300 embodiment introduced in FIG. 3 A, particularly highlighting aspects of the shaper head section (310) and the elongated shaper body section (320). The specific featuresshown may be representative of similar features found in other tibial shaper embodiments (e.g., 200A, 200B).

[0084] As depicted in the embodiment shown in FIG. 3B, the shaper head section (310) may include shaper blades 315, which could be configured for bone shaping. Adjacent to the shaper blades 315, features such as a guide recess 311 and a guide flange 312 might be present. In many embodiments, a pair of guide recesses 311 and guide flanges 312 could be arranged symmetrically. These features might be dimensioned to interact with corresponding elements, such as the interlocking recesses (125) and interlocking flanges (126) of a tibial shaping guide (100), which can be configured to restrict or otherwise reduce lateral movement during use.

[0085] In some embodiments, the shaper body section (320) can extend proximally from the head section. The embodiment depicted in FIG. 3B illustrates various distinct portions along the shaper body section (320) in this particular embodiment, identified nominally as the shaper body top 325, narrowed neck section top 324, shaper neck top 323, shaper body neck portion 322, and shaper body base 321, progressing from distal to proximal in this view's labeling convention. These defined sections might relate to structural requirements, manufacturing processes, or ergonomics, and their specific forms could vary in other embodiments.

[0086] Furthermore, in certain embodiments, the proximal end of the tibial shaper 300 features the quick-connect portion 330. This embodiment depicted in FIG. 3B details potential subcomponents of the quick-connect portion 330, including a quick-connect head 331, a quickconnect neck 332, and a quick-connect base 333. This configuration could facilitate attachment to an impactor frame (400) or handle, allowing for secure engagement and potentially efficient transfer of force during impaction procedures.

[0087] Although a specific embodiment for a tibial shaper 300 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 3B, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, alternative connection mechanisms could be employed in place of the quick-connect portion 330 in other embodiments. The elements depicted in FIG. 3B may also be interchangeable with other elements of FIGS. 1A-3A, and 3C-8 as required to realize a particularly desired embodiment.

[0088] Referring to FIG. 3C, a left side view of a tibial shaper 300, in accordance with various embodiments of the disclosure is shown. This side profile perspective may further illustrate the structural features of the tibial shaper 300 embodiment, illustrating the contour of the shaper head section (310) and the shaper body section (320). As with FIGS. 3 A and 3B, the features shown may be representative of other tibial shaper embodiments.

[0089] As depicted in the embodiment shown in FIG. 3C, the shaper head section (310) exhibits a specific profile and height, denoted as the shaper head height 319. In various embodiments, this dimension can be matched for interaction with a tibial shaping guide (100) or for determining the depth of bone shaping. Also visible in this side view are the guide recess 311 and guide flange 312, features configured in numerous embodiments to engage with a shaping guide to restrict lateral movement, thereby facilitating controlled shaping of a tibia bone (500) or talar bone (600). The shaper blades 315 are also visible at the distal end.

[0090] In some embodiments, the profile view of the shaper body section (320) reveals the transitions between different portions, such as the shaper body top 325, narrowed neck section top 324, and shaper neck top 323, as labelled in this specific embodiment from a top perspective but visible in profile here. The contour might include ergonomic considerations, such as the shaper body side 329, potentially offering a surface for handling or interfacing with other system components like an impactor frame (400).

[0091] Furthermore, in certain embodiments, the quick-connect portion 330 is visible at the proximal end of the tibial shaper 300 in this side view. Its profile suggests a configuration suitable for mechanical engagement, possibly allowing for secure attachment and detachment from an associated handle or impaction device. The overall elongated structure shown in the embodiment depicted in FIG. 3C can facilitate manipulation and positioning of the shaper blades 315 at the surgical site.

[0092] Although a specific embodiment for a tibial shaper 300 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 3C, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the shaper head height 319 could be varied in different embodiments to control the depth of bone resection. The elements depicted in FIG. 3C may also be interchangeablewith other elements of FIGS. 1A-3B, and 3D-8 as required to realize a particularly desired embodiment.

[0093] Referring to FIG. 3D, a bottom-up view of a tibial shaper 300, in accordance with various embodiments of the disclosure is shown. This view presents the underside of the tibial shaper 300 embodiment, potentially revealing details about the shaper head section (310) and the shaper body section (320) not apparent from other perspectives. As with the preceding views (FIGS. 3A-3C), this illustration represents one possible configuration, and its features might generally apply to other shaper types (e.g., 200A, 200B).

[0094] As depicted in the embodiment shown in FIG. 3D, the shaper head section (310) viewed from below clearly displays the guide recesses 311 and guide flanges 312. A pair of guide recesses 311 and guide flanges 312 may be arranged, possibly symmetrically, and could be configured to engage with corresponding features in a tibial shaping guide (100). This engagement might facilitate controlled movement and restrict lateral motion during bone preparation.

[0095] In some embodiments, the underside view of the shaper body section (320) reveals various defined surfaces and transitions. FIG. 3D specifically labels the shaper body bottom 328, shaper body side 329, narrowed neck section side 327, and shaper neck side 326. These labels may denote the contours and regions of the shaft as seen from below, potentially differing slightly in designation from the top or side views due to perspective or specific feature callouts in this embodiment. The overall shape might relate to strength, weight reduction, or manufacturing considerations.

[0096] Furthermore, in certain embodiments, the quick-connect portion 330 is visible at the proximal end of the tibial shaper 300 from this bottom-up perspective. The view indicates its position relative to the shaper body section (320) and its potential readiness for engagement with an impactor frame (400) or other driving mechanism. The configuration may allow the user to manipulate the shaper via the shaper body section (320) while precisely positioning the shaper head section (310) for interaction with bone.

[0097] Although a specific embodiment for a tibial shaper 300 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 3D,any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the shaper body bottom 328 could incorporate channels or markings for alignment purposes in different embodiments. The elements depicted in FIG. 3D may also be interchangeable with other elements of FIGS. 1 A-3C, and 4-8 as required to realize a particularly desired embodiment.

[0098] Referring to FIG. 4, a perspective view of a shaping system with an impactor frame 400, in accordance with various embodiments of the disclosure is shown. This view may illustrate the spatial relationship and potential interaction between several components of the system, including the impactor frame 400, a tibial shaper 300, and a tibial shaping guide 100. The arrangement depicted represents one possible configuration of these elements working together.

[0099] As depicted in the embodiment shown in FIG. 4, the impactor frame 400 might be configured to engage with the tibial shaper 300. In many embodiments, this engagement could occur at the proximal end of the tibial shaper 300, potentially via a feature like the quick-connect portion (330). This connection might allow the impactor frame 400 to securely hold the tibial shaper 300, possibly facilitating the exchange of different tibial shaper types (e.g., 200 A, 200B, 200C) during a procedure.

[0100] In some embodiments, the impactor frame 400 can be designed to receive impaction forces, perhaps from a mallet or other surgical instrument (not shown). These forces might then be transferred through the impactor frame 400 to the engaged tibial shaper 300. The tibial shaper 300, in turn, may be guided by the tibial shaping guide 100, as shown in the assembled state in FIG. 4, allowing the impaction force to drive the shaper blades (315) into bone in a controlled manner.

[0101] Furthermore, in certain embodiments, the impactor frame 400 may possess a structure, possibly arcuate or frame-like as shown, that positions the point of impaction relative to the tibial shaper 300 and tibial shaping guide 100 assembly. This configuration could provide stability and allow for consistent force application during the bone shaping process. The combination of the impactor frame 400, tibial shaper 300, and tibial shaping guide 100 potentially constitutes a cohesive system for preparing a bone surface.

[0102] Although a specific embodiment for a shaping system including an impactor frame 400, tibial shaper 300, and tibial shaping guide 100 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 4, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the impactor frame 400 could be constructed from sterilizable metal or reinforced polymer materials. The elements depicted in FIG. 4 may also be interchangeable with other elements of FIGS. 1A-3D, 5-8 as required to realize a particularly desired embodiment.

[0103] Referring to FIG. 5, a perspective view of a tibial shaper 300 being inserted into a tibial shaping guide 100, in accordance with various embodiments of the disclosure is shown. Specifically, the arrangement can be of the shaper being inserted into the shaping guide prior to impaction of the tibia bone 500. This view illustrates a potential step in a surgical procedure where the tibial shaper 300 is introduced into the tibial shaping guide 100, which may already be positioned relative to anatomical structures, represented here as tibia bone 500 and talar bone 600. The impactor frame 400 might also be associated with the tibial shaper 300 during this process.

[0104] As depicted in the embodiment shown in FIG. 5, the tibial shaping guide 100 might be secured to the tibia bone 500 and / or talar bone 600. This fixation could be achieved using various fixation elements, such as a left parallel pin 171 , a right parallel pin 172, and potentially an oblique pin 173 , which may engage with corresponding fixation pin holes ( 170) in the tibial shaping guide 100. Such fixation can provide stability for the guide during subsequent steps.

[0105] In some embodiments, the tibial shaper 300, potentially connected to the impactor frame 400 via its quick-connect portion 330, is shown being advanced towards or into the tibial shaping guide 100. The tibial shaping guide 100 can possess internal features, such as an anterior guide recess (120) with interlocking features (125, 126), configured to receive and guide the shaper head section (310) of the tibial shaper 300. This guided insertion process might ensure proper alignment of the shaper blades (315) relative to the bone surfaces.

[0106] Furthermore, in certain embodiments, FIG. 5 illustrates the coordinated use of multiple components within the system. The tibial shaping guide 100 serves as a stable reference fixed to the bones (500, 600) via pins (171, 172, 173), while the tibial shaper 300, possibly driven by the impactor frame 400, is guided by the tibial shaping guide 100 towards the target site for bonepreparation. This arrangement can facilitate controlled material removal from the tibia bone 500 or talar bone 600.

[0107] Although a specific embodiment illustrating a tibial shaper 300 being inserted into a tibial shaping guide 100 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 5, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, alternative fixation elements beyond pins 171, 172, 173 could be employed to secure the tibial shaping guide 100 in other embodiments. The elements depicted in FIG. 5 may also be interchangeable with other elements of FIGS. 1A-4, 6-8 as required to realize a particularly desired embodiment.

[0108] Referring to FIG. 6, a perspective view of a tibial shaper 300 fully inserted into a tibial shaping guide 100, in accordance with various embodiments of the disclosure is shown. This view depicts a subsequent stage relative to the embodiment shown in FIG. 5, illustrating the tibial shaper 300 in a potentially fully seated position within the tibial shaping guide 100. The guide 100 can remain positioned relative to anatomical structures, represented as tibia bone 500 and talar bone 600, potentially secured by fixation elements (171, 172, 173).

[0109] As depicted in the embodiment shown in FIG. 6, the tibial shaper 300, possibly connected to an impactor frame 400 via the quick-connect portion 330, can occupy the channel or recess within the tibial shaping guide 100. The shaper head section (310), containing the shaper blades (315), may now be positioned adjacent to the target area on the tibia bone 500 or talar bone 600. The tibial shaping guide 100, stabilized by pins such as left parallel pin 171, right parallel pin 172, and oblique pin 173, maintains the alignment of the tibial shaper 300.

[0110] In some embodiments, this fully inserted configuration represents the state immediately prior to or during the application of impaction force. The guiding features within the tibial shaping guide 100, potentially interacting with the guide flanges (312) and guide recesses (311 ) of the tibial shaper 300, can ensure that the shaper blades (315) are presented to the bone surface at the correct orientation and location as determined by the placement of the tibial shaping guide 100.

[0111] Furthermore, in certain embodiments, the relationship between the fully inserted tibial shaper 300 and the tibial shaping guide 100, fixed relative to the tibia bone 500 and talar bone 600,can establish the boundaries for the bone shaping operation. The system, comprising the guide 100, shaper 300, fixation pins (171, 172, 173), and potentially the impactor frame 400, may enable controlled modification of the bone surface when an impaction force is applied via the quickconnect portion 330.

[0112] Although a specific embodiment illustrating a tibial shaper 300 fully inserted into a tibial shaping guide 100 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 6, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the tibial shaping guide 100 or tibial shaper 300 could include depth markings to indicate full insertion in various embodiments. The elements depicted in FIG. 6 may also be interchangeable with other elements of FIGS. 1A-5, and 7-8 as required to realize a particularly desired embodiment.

[0113] Referring to FIG. 7, a right-side view of a tibial shaper 300 fully inserted into a tibial shaping guide 100, in accordance with various embodiments of the disclosure is shown. This view can provide a profile perspective of the assembled components in a fully inserted state, similar to FIG. 6, illustrating their relationship relative to representations of a tibia bone 500 and a talar bone 600. The fixation of the tibial shaping guide 100 may be maintained by elements such as the right parallel pin 172 and oblique pin 173.

[0114] As depicted in the embodiment shown in FIG. 7, the tibial shaper 300 is seated within the tibial shaping guide 100. The shaper blades 315, located at the distal end of the shaper head section (310), are positioned adjacent to the talar bone 600, potentially poised for initiating or continuing a bone shaping process. The relative vertical position between the tibial shaper 300 and the tibial shaping guide 100 might be determined by their respective geometries and potentially by features like the shaper body height 190 of the guide.

[0115] Although not explicitly visible in this side view, the engagement between the tibial shaper 300 and the tibial shaping guide 100 may involve interacting features designed to constrain movement. In many embodiments, the guide flanges (312) and guide recesses (311) on the tibial shaper 300 could mate with corresponding interlocking recesses (125) and interlocking flanges (126) within the anterior guide recess (120) of the tibial shaping guide 100. This cooperativeengagement might substantially restrict lateral or side-to-side motion of the tibial shaper 300 relative to the guide 100, ensuring precise alignment during impaction.

[0116] Furthermore, in certain embodiments, FIG. 7 illustrates the overall assembly prepared for potential impaction. The tibial shaping guide 100 can provide a stable, fixed platform via pins (172, 173) engaging the tibia bone 500. The tibial shaper 300 is precisely guided within the guide 100, with its shaper blades 315 directed towards the target bone (talar bone 600 in this depiction). Force applied to the proximal end of the tibial shaper 300, potentially via an impactor frame (400), could then be directed accurately to perform the shaping operation.

[0117] Although a specific embodiment illustrating a tibial shaper 300 fully inserted into a tibial shaping guide 100 for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 7, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the tibial shaper 300 may be one of the other single-blade version previously described. The elements depicted in FIG. 7 may also be interchangeable with other elements of FIGS. 1 A-6, and 8 as required to realize a particularly desired embodiment.

[0118] Referring to FIG. 8, a right-side view of a tibial shaper 300 fully impacted into a tibia bone 500, in accordance with various embodiments of the disclosure is shown. This view illustrates a potential outcome following the application of impaction force to the system depicted in previous figures (e.g., FIG. 6, FIG. 7). The tibial shaper 300 may have moved relative to the tibial shaping guide 100 to engage and modify the tibia bone 500, while the guide 100 remains fixed via pins like right parallel pin 172 and oblique pin 173 (or a pin that is otherwise at an angle oblique to the two parallel pins).

[0119] As depicted in the embodiment shown in FIG. 8, the tibial shaper 300 appears advanced distally compared to its position in FIG. 7, indicating the result of an impaction step. The shaper head section (310), with its shaper blades (315, implied), has likely engaged the talar bone 600, performing the intended shaping operation. The tibial shaping guide 100 continues to provide stable guidance and alignment during this process.

[0120] In some embodiments, the depth of impaction might be controlled or limited by various features. The tibial shaping guide 100 can include a stopping portion 180, which might physically abut a corresponding feature on the tibial shaper 300 or the underlying bone (tibia bone 500, etc.) to halt further advancement. This stopping portion 180 could therefore define the final depth of the shaped cavity or surface on the bone.

[0121] Additionally, while not explicitly shown in this side profile, the interaction between guiding features within the system could contribute to halting the impaction. In certain embodiments, the guide flanges (312) and guide recesses (311 ) of the tibial shaper 300, interacting with the interlocking recesses (125) and interlocking flanges (126) of the tibial shaping guide 100, might not only restrict lateral movement but could also reach a limit of vertical travel. This interaction itself might serve as a secondary or primary stop mechanism in some configurations, defining the completed state of impaction.

[0122] Furthermore, in certain embodiments, the relationship between the shaper head height 319 and the shaper body height 190 (of the guide) might be significant in the fully impacted state as they can be equal in size. As shown in FIG. 8, the relative positions of these heights could indicate the successful completion of the shaping to the intended depth, potentially aligning surfaces or achieving specific dimensional goals required for subsequent implant placement. The view captures the culmination of the guided shaping process facilitated by the system components.

[0123] Although a specific embodiment illustrating a tibial shaper 300 fully impacted for carrying out the various steps, processes, methods, and operations described herein is discussed with respect to FIG. 8, any of a variety of systems and / or devices may be utilized in accordance with embodiments of the disclosure. For example, the stopping portion 180 could be adjustable in other embodiments to vary the impaction depth. The elements depicted in FIG. 8 may also be interchangeable with other elements of FIGS. 1A-7 as required to realize a particularly desired embodiment.

[0124] Although the present disclosure has been described in certain specific aspects, many additional modifications and variations would be apparent to those skilled in the art. In particular, any of the various processes described above can be performed in alternative sequences and / or in parallel in order to achieve similar results in a manner that is moreappropriate to the requirements of a specific application. It is therefore to be understood that the present disclosure can be practiced other than specifically described without departing from the scope and spirit of the present disclosure. Thus, embodiments of the present disclosure should be considered in all respects as illustrative and not restrictive. It will be evident to the person skilled in the art to freely combine several or all of the embodiments discussed here as deemed suitable for a specific application of the disclosure. Throughout this disclosure, terms like “advantageous”, “exemplary” or “example” indicate elements or dimensions which are particularly suitable (but not essential) to the disclosure or an embodiment thereof and may be modified wherever deemed suitable by the skilled person, except where expressly required. Accordingly, the scope of the disclosure should be determined not by the embodiments illustrated, but by the appended claims and their equivalents.

[0125] Any reference to an element being made in the singular is not intended to mean “one and only one” unless explicitly so stated, but rather “one or more.” All structural and functional equivalents to the elements of the above-described preferred embodiment and additional embodiments as regarded by those of ordinary skill in the art are hereby expressly incorporated by reference and are intended to be encompassed by the present claims.

[0126] Moreover, no requirement exists for a system or method to address each and every problem sought to be resolved by the present disclosure, for solutions to such problems to be encompassed by the present claims. Furthermore, no element, component, or method step in the present disclosure is intended to be dedicated to the public regardless of whether the element, component, or method step is explicitly recited in the claims. Various changes and modifications in form, material, workpiece, and fabrication material detail can be made, without departing from the spirit and scope of the present disclosure, as set forth in the appended claims, as might be apparent to those of ordinary skill in the art, are also encompassed by the present disclosure.

Claims

CLAIMSWhat is claimed is:

1. A tibial shaping system, comprising: a tibial shaper, comprising: a shaping body section; and a shaper head section, wherein the shaper head section comprises: a blade configured for shaping a tibia bone; a pair of guide flanges; and a pair for guide recesses, wherein each guide recess is disposed between a guide flange and a blade; and a tibial shaping guide, comprising a body with an anterior side, wherein the anterior side includes at least: a plurality of fixation pin holes; and an anterior guide recess; wherein the anterior guide recess is dimensioned to mate with the tibial shaper such that the tibial shaping guide restricts a side motion of the tibial shaper during tibia bone shaping.

2. The tibial shaping system of claim 1, wherein the tibial shaper can move vertically toward the tibia bone during an impaction process.

3. The tibial shaping system of claim 2, wherein the tibial shaping guide further includes a pair of interlocking recesses and a pair interlocking flanges.

4. The tibial shaping system of claim 3, wherein the pair of interlocking recesses and interlocking flanges are located within the anterior guide recess.

5. The tibial shaping system of claim 4, wherein the pair of guide flanges are configured to interlock with the interlocking recesses.

6. The tibial shaping system of claim 5, wherein the pair of interlocking flanges is configured to interlock with the pair of guide recesses.

7. The tibial shaping system of claim 6, wherein the interlocking flanges and guide recesses are dimensioned to reduce lateral movement during an impaction process.

8. The tibial shaping system of claim 5, wherein the pair of guide flanges and interlocking recesses are dimensioned to reduce lateral movement during an impaction process.

9. The tibial shaping system of claim 1, wherein the plurality of fixation pin holes includes at least two fixation pin holes configured for engaging with two parallel pins.

10. The tibial shaping system of claim 9, wherein the plurality of fixation pin holes further includes one fixation pin hole configured for engaging with an oblique pin.

11. The tibial shaping system of claim 9, wherein the two parallel pins are impacted into a tibia bone.

12. The tibial shaping system of claim 10, wherein the oblique pin is impacted into a tibia bone at an angle oblique to the two parallel pins such that the tibial shaper is affixed to the tibia bone upon engaging with the two parallel pins and oblique pin.

13. The tibial shaping system of claim 12, wherein the tibial shaping guide further comprises a stopping portion.

14. The tibial shaping system of claim 13, wherein the stopping portion is configured to rest against a tibia bone.

15. The tibial shaping system of claim 1, wherein the shaping body section is configured to engage with an impactor frame for receiving impaction strikes.

16. The tibial shaping system of claim 15, wherein the engagement between the shaping body section and the impactor frame is via a quick-connect interface.

17. The tibial shaping system of claim 1, wherein the tibial shaping guide has a base with a shaper body height, and the tibial shaper has a shaper head height.

18. The tibial shaper system of claim 17, wherein the shaper body height and shaper head height are equal.

19. A tibial shaper, comprising: a shaping body section; and a shaper head section, wherein the shaper head section comprises: a blade configured for shaping a tibia bone; a pair of guide flanges; and a pair for guide recesses, wherein each guide recess is disposed between a guide flange and a blade.

20. A tibial shaping guide, comprising: a body with an anterior side, wherein the anterior side includes at least: a plurality of fixation pin holes; and an anterior guide recess; wherein the anterior guide recess is dimensioned to mate with a tibial shaper such that the tibial shaping guide restricts a side motion of the tibial shaper during tibia bone shaping.

Images