Orthopedic Surgical Instruments and Methods

Abstract

The orthopaedic surgical instrument system includes a bur and a bur guide. The bur guide comprises an elongated opening, at least a portion of the elongated opening comprising a substantially circular opening having a dimension greater than an adjacent portion of the elongated opening. The circular opening is configured to receive at least a portion of the bur therein and therethrough, allowing the bur to be manipulated along a length of the elongated opening. The bur has a first end and a second end opposite a shaft, the first end configured for readily releasable connection to a tool. The second end of the bur has a contact portion configured to cut and / or resurface a bone surface. Methods of using the orthopaedic surgical instrument system are also disclosed herein.

Description

REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Provisional Patent Application No. 63 / 363,963, filed May 2, 2022, the disclosure of which is incorporated by reference herein in its entirety. [Technical field]

[0002] FIELD OF THE DISCLOSURE The present disclosure relates to podiatric and orthopedic instruments, systems, and methods associated with the performance of orthopedic surgery, including but not limited to arthroplasty, arthrodesis, arthrodesis, and / or osteotomy of the foot or ankle joint, and / or procedures incorporating the surrounding bone / soft tissue. [Background technology]

[0003] Many currently available instruments, systems, devices, and methods for addressing bone, soft tissue, and joint trauma (acute and chronic, e.g., defects, gradual deterioration, deformity, etc.) do not fully address the needs of patients. Furthermore, many currently available instruments, systems, devices, and methods for addressing joint trauma and other conditions do not take into account the anatomical characteristics of the joint and the associated mechanical and kinematic motion patterns or function. Summary of the Invention

[0004] The present disclosure relates to an orthopaedic surgical instrument system according to one aspect of the disclosure. The system includes a bar and a bar guide. The bar guide comprises an elongated opening, at least a portion of the elongated opening comprising a substantially circular opening having a larger lateral dimension than an adjacent portion of the elongated opening. The circular opening is configured to receive at least a portion of the bar therein and therethrough, allowing the bar to be manipulated along a length of the elongated opening.

[0005] According to one aspect of the present disclosure, a guide includes a body having at least one lobe extending laterally therefrom.

[0006] According to one aspect of the present disclosure, the at least one lobe comprises a pair of lobes extending laterally from opposite sides of the body.

[0007] According to one aspect of the present disclosure, each of the pair of lobes includes a groove disposed in a central portion of the respective lobe, the groove extending from the top surface to the bottom surface of the respective lobe.

[0008] According to one aspect of the present disclosure, the system further comprises at least one stabilization wire configured to releasably connect the guide to a bone of the patient.

[0009] According to one aspect of the disclosure, the guide is substantially symmetrical about at least one plane passing through the guide.

[0010] According to one aspect of the present disclosure, at least one plane intersects or is coplanar with a longitudinal axis extending along the length of the elongated opening.

[0011] According to one aspect of the disclosure, the bar includes a first end opposite the shaft from the second end, the first end including a shape configured for releasable connection with a powered instrument.

[0012] According to one aspect of the disclosure, the second end of the bar includes a contact portion.

[0013] According to one aspect of the disclosure, the contact portion comprises a shape that is larger in at least one dimension than the shaft and the first end of the bar.

[0014] The present disclosure relates to an appliance, the appliance including an upper portion, a central portion having a larger lateral dimension than the upper portion, and a lower portion having a larger lateral dimension than the central portion.

[0015] According to another aspect of the disclosure, the second end comprises a contact portion, the contact portion comprising a shape having at least one lateral dimension greater than the shaft or the first end.

[0016] According to another aspect of the present disclosure, the contact portion is configured to function as a mechanical stop and further comprises a substantially cylindrical shape having a plurality of members protruding from an outer surface of the contact portion, the plurality of members extending the length and / or circumference of the outer surface, and the plurality of members extending outwardly from the outer surface at at least one angle that is perpendicular or oblique to the outer surface.

[0017] The present disclosure relates to a guide comprising a body having an elongated opening extending from a top surface to a bottom surface of the body and a circular opening extending from the top surface to the bottom surface of the body, the guide also comprising a pair of lobes extending laterally from the body.

[0018] According to another aspect of the present disclosure, the elongated opening and the circular opening are in fluid communication with each other.

[0019] According to another aspect of the present disclosure, the circular opening comprises a lateral dimension that is greater than a lateral dimension of the elongated groove.

[0020] According to another aspect of the present disclosure, each lobe includes a groove extending from a top surface to a bottom surface of the respective groove.

[0021] According to another aspect of the present disclosure, each lobe comprises a substantially curved shape.

[0022] According to another aspect of the present disclosure, the guide is symmetrical about a plane overlapping a longitudinal axis extending along the length of the elongate channel.

[0023] According to another aspect of the present disclosure, the elongate channel includes a recess extending along at least a portion of the length of the elongate channel, the recess being disposed adjacent to the upper surface of the body. [Brief description of the drawings]

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the detailed description herein, serve to explain the principles of the invention. It is emphasized that, in accordance with standard industry practice, various features may or may not be drawn to scale. In fact, dimensions of various features may be arbitrarily expanded or reduced for clarity of illustration. The drawings are only for the purpose of illustrating embodiments of the disclosed invention and are not to be construed as limiting the invention.

[0025] [Figure 1] FIG. 1 is a front perspective view of an orthopaedic surgical instrument system according to the present disclosure;

[0026] [Diagram 2] FIG. 2 is a front view of the orthopaedic surgical instrument system of FIG. 1 in accordance with the present disclosure;

[0027] [Diagram 3] FIG. 2 is another front perspective view of the orthopaedic surgical instrument system of FIG. 1 in accordance with the present disclosure;

[0028] [Figure 4] FIG. 2 is a rear perspective view of the orthopaedic surgical instrument system of FIG. 1 in accordance with the present disclosure;

[0029] [Diagram 5] FIG. 2 is another rear perspective view of the orthopaedic surgical instrument system of FIG. 1 in accordance with the present disclosure;

[0030] [Figure 6] FIG. 2 is a front perspective view of the orthopaedic surgical instrument system of FIG. 1 in a second position according to the present disclosure;

[0031] [Figure 7] FIG. 7 is a first side perspective view of the orthopaedic surgical instrument system of FIG. 6 in accordance with the present disclosure;

[0032] [Figure 8] FIG. 7 is a second side perspective view of the orthopaedic surgical instrument system of FIG. 6 in accordance with the present disclosure;

[0033] [Figure 9] FIG. 7 is a front top view of the orthopaedic surgical instrument of the orthopaedic surgical instrument system of FIGS. 1 and 6 in accordance with the present disclosure;

[0034] [Figure 10] 9 of the orthopaedic surgical instrument system of FIGS. 1 and 6 in accordance with the present disclosure.

[0035] [Figure 11] 9 of the orthopaedic surgical instrument system of FIGS. 1 and 6 in accordance with the present disclosure.

[0036] [Figure 12] 9 of the orthopaedic surgical instrument system of FIGS. 1-6 in accordance with the present disclosure.

[0037] [Figure 13] 9 of the orthopaedic surgical instrument system of FIGS. 1-6 in accordance with the present disclosure;

[0038] [Figure 14] 9 of the orthopaedic surgical instrument system of FIGS. 1 and 6 in accordance with the present disclosure; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] In this detailed description and in the claims that follow, the terms proximal, distal, anterior or plantar, posterior or dorsal, medial, lateral, superior, and inferior are defined according to the relative placement or orientation reference terms of natural bones or by standard usage to designate a particular portion or site of an implant. For example, "proximal" refers to the portion of the device or implant closest to the body and "distal" refers to the portion of the device or implant furthest from the body. As directional terms, "anterior" refers to a direction toward the front of the body, "posterior" refers to a direction toward the back of the body, "medial" refers to a direction toward the midline of the body, "lateral" refers to a direction toward the side of the body or away from the midline of the body, "superior" refers to a direction above another object or structure, and "inferior" refers to a direction below another object or structure. Furthermore, with particular reference to the foot, the term "dorsal" refers to the top of the foot and the term "plantar" refers to the bottom of the foot.

[0040] Similarly, a location or orientation may be used herein with reference to an anatomical structure or surface. For example, the present implants, devices, instruments, and methods are described herein with reference to use on the bones of the foot, and therefore the bones of the foot, ankle, and lower leg are used to describe the surfaces, locations, directions, or orientations of the implants, devices, instruments, and methods. Furthermore, the implants, devices, instruments, and methods disclosed herein, as well as their aspects, components, features, etc., are described with respect to one side of the body for the sake of brevity. It is to be noted that, because the human body is relatively symmetrical or mirror image with respect to a line of symmetry (the midline), it is expressly contemplated that the implants, devices, instruments, methods, as well as their aspects, elements, features, etc., described and / or illustrated herein may be changed, altered, modified, reconfigured, or otherwise modified for use on or in association with the other side of the body for the same or similar purposes without departing from the spirit and scope of the present invention. For example, the implants, devices, instruments, methods, as well as their aspects, components, features, etc., described herein with respect to the right foot may be mirrored to function similarly on the left foot. Additionally, although the implants, devices, instruments, and methods disclosed herein, and aspects, components, features, etc., are described with respect to the foot for simplicity, it will be understood that the implants, devices, instruments, and methods may be used with other bones of the body having a similar structure.

[0041] The disclosed instruments, implants, systems, assemblies, and related methods for maintaining, correcting, and / or resurfacing articular surfaces are disclosed in U.S. Patent No. 10,117,749, issued November 6, 2018, entitled "Subtalar Joint Implant," European Patent No. 3756626, issued December 30, 2020, entitled "Subtalar Joint Implant," European Patent Application No. 15770960.1A, filed July 15, 2020, entitled "Subtalar Joint Implant," U.S. Patent Application No. 17 / 653,029, filed March 1, 2022, entitled "Method of Performing a Joint Replacement of the Subtalar Joint," and U.S. Patent Application No. 2017 / 013363, filed March 30, 2022, entitled "Orthopedic Implants and Methods." No. 17 / 657,522, entitled "Systems and Methods for Controlled Articular Surface Repositioning in the Calcaneus," filed March 31, 2022; U.S. Provisional Patent Application No. 63 / 362,850, entitled "Surgical Methods for Treatment of the Subtalar Joint," filed April 12, 2022; and U.S. Provisional Patent Application No. 63 / 362,853, entitled "Orthopedic Implants and Instruments," filed April 12, 2022, all of which are incorporated by reference in their entireties herein.

[0042] Referring to the drawings, in which like reference numbers are used to indicate like or similar elements across the multiple views, and with particular reference to FIGS. 1-14, an orthopaedic surgical instrument system 100 (hereinafter referred to as “system 100” for brevity) is shown in accordance with one embodiment of the present disclosure. System 100 can be implemented in combination with one or more additional instrument systems, implant systems, and / or other surgical systems common to orthopaedic surgical procedures. For example, system 100 can be implemented in combination with a robotic surgical system, various resection guides or systems, alignment guides or systems, and / or implants or implant systems. Additionally, in some embodiments, system 100 may include additional elements not shown or described herein. For example, system 100 may include various elements common to orthopaedic surgical procedures, such as stabilization wires (K-wires, olive wires, etc.), pins, fasteners, and other elements. In some embodiments, one or more elements of system 100 may be manufactured or otherwise produced (e.g., 3D printed, additively manufactured, etc.) to be specific to a particular patient's anatomy. In some embodiments, image data (e.g., CT data, etc.) is collected and one or more elements of system 100 are generated from the image data to have a shape that corresponds to at least a portion of the patient's anatomy (e.g., a complementary shape, etc.).

[0043] As shown in the figures, for example, the system is configured to be placed adjacent the patient's subtalar joint from a lateral approach (e.g., adjacent the patient's sinus tarsi). In some aspects, the system may be configured to removably couple with one or more components of the patient's anatomy (e.g., the talus and calcaneus, which are components of the subtalar joint) so as not to abut or interfere with the patient's fibula.

[0044] 1-8. In accordance with one embodiment of the present disclosure, a system 100 is shown to include an instrument 110 and a guide 150. Although the instrument 110 is shown in FIGS. 1-8 as an elongated bar, in some embodiments, various alternative instruments may be implemented in combination with the guide 150 as part of the system 100. For example, files, various surface finishing tools, and / or various cutting tools may be implemented in combination with the guide 150 in the same and / or similar manner as shown and described with reference to FIGS. 1-8. Similarly, the instrument 110 may include a different bar arrangement than that shown in FIGS. 1-8, such as a bar with one or more of those elements having a different size, shape, additional components, or a bar without the elements shown and described herein.

[0045] The instrument 110 is shown including a first end 112 and a second end 116 opposite the shaft 114. The first end 112 may include one or more features common to detachable systems implemented in orthopedic and other medical specialty surgical instruments to facilitate easy attachment and detachment to a drill, driver, or other power tool. As shown, the connection feature of the first end 112 does not extend significantly from the shaft 114 toward the second end 116. It is noted that in alternative embodiments, the connection feature of the first end 112 may extend along at least a portion of the shaft 114 toward the second end 116. The first end 112 is shown as having a smaller lateral dimension than the second end 116, and further has a lateral dimension substantially similar and / or equal to the lateral dimension of at least a portion of the shaft 114. As shown, the shaft 114 and the first end 112 have an at least partially cylindrical shape with an at least partially circular cross section. However, in alternative embodiments, the shaft 114 and first end 112 may include alternative shapes, such as a rectangular prism having a rectangular cross-section, a hexagonal prism having a hexagonal cross-section, and the like.

[0046] The second end 116 is shown to include a contact portion 118 disposed generally opposite the shaft 114 from the first end 112. As shown, the contact portion 118 includes a shape having at least one lateral dimension (e.g., cross-sectional dimension) larger than the shaft 114 or the first end 112. Thus, the instrument 110 is configured to be inserted through an opening having a lateral dimension larger than the lateral dimensions of the first end 112 and at least a portion of the shaft 114, but smaller than the lateral dimension of the contact portion 118 of the second end 116. The contact portion 118 is configured to act as a mechanical stop, abutting an element adjacent the opening having a lateral dimension smaller than the contact portion 118. Thus, the instrument 110 and its elements are configured to prevent accidental removal of the entire instrument 110 from such an opening.

[0047] The contact portion 118 may include a substantially cylindrical shape as shown in FIGS. 1-8 with various elements protruding from the outer surface of the contact portion 118 along the length and circumference of the outer surface. The contact portion 118 may include, for example, one or more protrusions extending outwardly from the outer surface at an orthogonal or oblique angle to the outer surface. For example, as shown in the figures, the contact portion 118 includes five protrusions that are approximately equally spaced from one another along the circumference of the contact portion 118 and extend along the length of the contact portion 118. In some embodiments, the contact portion 118 may include more or fewer protrusions that are spaced at various intervals about both the circumference and length of the outer surface of the contact portion 118 and have various shapes.

[0048] System 100 is also shown to include guide 150, shown in conjunction with instrument 110 in FIGS. 1-8 and independent of instrument 110 in FIGS. 9-14. Guide 150 may be implemented in combination with instrument 110 or, in some embodiments, in combination with one or more other elements, including but not limited to those common to orthopedic surgery. In some embodiments, guide 150 may be provided separately from instrument 110, as part of an implant system or kit, an instrument system or kit, a set of instruments, or as part of a collection of surgical or orthopedic instruments or elements. Additionally, guide 150 may be provided with additional elements not shown or described herein, such as stabilizing wires or other fixation elements configured to removably attach guide 150 to one or more bones (or other portions of the patient's anatomy) or to other instruments or elements.

[0049] According to one aspect of the disclosure, the guide 150 is shown to include a body 152 that is substantially centrally (and / or adjacently) disposed relative to other components of the guide 150. As shown, the guide 150 has a substantially curved or C-shaped shape with the body 152 centrally disposed. However, in some aspects, the guide 150 may have alternative shapes to accommodate the patient's anatomy. The body 152 is shown to include a tapered shape, with the taper extending beyond the convex end of the C-shape (the widest portion of the body 152) and into the convex C-shape (the narrowest portion of the body 152 if it includes a rounded end). The body 152 is shown here to have a substantially elongated shape with an opening 154 disposed in a central portion of the body 152, the opening 154 extending from the top surface of the body 152 to the bottom surface (the opposite side of the body 152 from the top surface) to provide fluid communication therebetween. Moreover, opening 154 is shown to extend laterally across a majority of the lateral dimension of body 152 (eg, more than half the width).

[0050] The opening 154 is shown to include a bore 156 (e.g., similar to the opening 154) disposed adjacent the opening 154 and extending from the top surface to the bottom surface of the body 152 to establish fluid communication therebetween. As shown in the figures, the bore 156 is in fluid communication with the opening 154 (e.g., integrally forming a keyhole opening). As shown in the figures, the bore 156 includes a substantially cylindrical shape, but in some embodiments may include alternative shapes and / or locations. For example, as shown in FIGS. 1-8 , at least a portion of the shaft 114 of the instrument 110 can be manipulated from the bore 156 to the opening 154, or vice versa, without removing the shaft 114 from the guide 150. In some embodiments, the opening 154 may be larger than a lateral dimension of the shaft 114 and smaller than a lateral dimension of the contact portion 118 to prevent the contact portion 118 (and accordingly the instrument 110) from being withdrawn from the opening 154. In some embodiments, the hollow portion 156 may have a similar lateral or radial dimension configured to prevent withdrawal of the contact portion 118 of the instrument 110 (e.g., as a mechanical stop). Note that in some embodiments, the hollow portion 156 may include a lateral dimension larger than the contact portion 118, and the instrument 110 may be inserted into the guide 150 through the hollow portion 156 with the contact portion 118 first, such that a portion of the shaft 114 is disposed within the hollow portion 156, and the contact portion 118 may be removed from the guide 150 at the end of removal. While at least a portion of the shaft 114 is disposed within the hollow portion 156, the instrument 110 may be manipulated through a prescribed range of motion. Note that the instrument 110 may be manipulated laterally such that the shaft 114 (at least a portion of it) is relocated from within the hollow portion 156 into the opening 154. Thus, the elongated shape of opening 154 allows instrument 110 to be manipulated over a greater range of motion than would be possible if shaft 114 of instrument 110 remained within hollow portion 156 .

[0051] According to one aspect of the disclosure, the body 152 is shown to further include a recess 158 extending along at least a portion of the top surface of the body 152. As shown in FIGS. 9-12, the recess 158 includes an area on the body 152 (e.g., its top surface) that overlaps with at least a portion of the area of ​​the opening 154 and the hollow portion 156. In some aspects, the opening 154 and the recess 158 may have a common longitudinal axis in the lateral direction (e.g., in a plane parallel to the top surface of the body 152). As shown in the figures, the body 152 (and the guide 150) are generally symmetrical about the longitudinal axis of the recess 158. The recess 158 is sized to at least partially accommodate a straight cylindrical surgical component or fastener (e.g., a K-wire) such that the component can provide an indication regarding the position and / or alignment of the guide 150 relative to the patient's anatomy prior to removably attaching the guide 150 to the patient's anatomy. Additionally, when a K-wire or other element is placed within the recess 158, the K-wire will present a plane in which it can operate with the instrument 110 when positioned within the opening 154 and / or hollow 156 of the guide 150. The guide 150 and K-wire are positioned or repositioned and confirmed with fluoroscopy or other imaging techniques until it is verified that the plane presented by the K-wire coincides with the desired plane in which the instrument 110 will operate. For example, in some embodiments, this plane may include at least a portion of the posterior surface of the calcaneus or talus and / or various other components or tissues of the subtalar joint.

[0052] The guide 150 is further shown to include a first lobe 170 and a second lobe 180 that extend from opposite sides of the body 152 and are curved in substantially the same direction to form the aforementioned C-shape of the guide 150. As shown, the first lobe 170 and the second lobe 180 are the same or similar shape and size, although in some embodiments, one of the lobes may have a different size and / or shape than the other lobe. Each of the first and second lobes 170, 180 is shown to have a curvature biased toward the narrower of the two ends of the body 152 (e.g., the end closest to the hollow portion 156) and to include a substantially rounded terminal end opposite the point at which it extends from the side of the body 152. The first lobe 170 and the second lobe 180 are shown to include a first groove 172 disposed on the first lobe 170 and a second groove 182 disposed on the second lobe 180. As shown, the first groove 172 and the second groove 182 are centrally disposed with respect to the first lobe 170 and the second lobe 180, and further have substantially similar and / or equal lengths, widths, and generally elongated shapes. The first groove 172 and the second groove 182 are configured to receive an element therethrough, such as, for example, a K-wire or other stabilizing element, or a pin or other traction-compatible linear rigid body, such that when received within the first groove 172 and the second groove 182, the wire, pin, or other rigid body can move along the length of the respective groove 172, 182.

[0053] In some embodiments, system 100 may be implemented in accordance with one or more surgical methods, either independently or as a sub-method of a larger surgical procedure. The following methods are intended to be illustrative and not limiting of the uses of system 100 and its elements.

[0054] In some embodiments, a physician may select the system 100 (and / or one or more elements thereof) for use in a surgical procedure involving the subtalar joint and / or adjacent soft tissue structures. Prior to introducing the system 100 into a procedure (e.g., before making an incision), the physician may place the guide 150, having the K-wire at least partially disposed within the recess 158, on the patient's skin in the lateral portion of the foot adjacent the subtalar joint. The physician then performs fluoroscopy or other imaging techniques to determine whether the plane indicated by the K-wire aligns with the plane in which the physician wishes to operate the instrument 110 (in this example, considered a bar as in the figures and description below, but which may also include additional or alternative cutting or positioning instruments). Upon verifying the position of the guide 150 and the corresponding plane indicated by the K-wire, the physician forms one or more incisions and / or percutaneous punctures in the lateral portion of the foot adjacent the sinus tarsi. The physician then places one or more traction pins (e.g., one in the talus and one in the calcaneus) in the grooves 172, 182 of the guide 150, with each pin at least partially positioned within one of the grooves (ideally, the pins are positioned in the portions of the grooves 172, 182 closest to the body 152). The physician then attaches a distractor to the pins and distracts the talus and calcaneus accordingly, allowing access to the joint space of the subtalar joint. The instrument 110 can then be positioned with the contact portion 118 first through the hollow portion 156 (and into the joint space) and the instrument 110 can be manipulated through a range of motion defined by the boundaries of the hollow portion 156 and the opening 154, thereby allowing the contact portion 118 to be moved to various depths along the plane previously indicated by the K-wire. The instrument 110 is then connected at the first end 112 to a screwdriver or other common orthopedic power tool. As the contact portion 118 passes through the joint space, the prongs of the contact portion are configured to resurface, remove, and resect the soft tissue of the joint space and / or a portion of the upper (e.g., posterior) surface of the calcaneus and / or a portion of the lower surface of the talus. This process may be performed repeatedly, with periodic evaluation of the resection or burring performed by the instrument 110. In some embodiments, imaging techniques may be implemented into this evaluation.Once the desired amount of "burring" (e.g., resection, resurfacing, soft tissue removal, etc.) has been performed, the instrument 110 is removed from the tool and removed from the guide 150 via the hollow portion 152. The distractor can then be removed from the retraction pin, followed by removal of the guide 150 and retraction pin from the patient.

[0055] The terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting of the invention. As used herein, the singular forms include the plural forms unless the context clearly indicates otherwise. Additionally, it is understood that the terms "comprise", "have", and "include" are open-ended linking verbs. As a result, a method or device that "comprises", "has", or "includes" one or more steps or elements has those one or more steps or elements, but is not limited to having only those one or more steps or elements. Similarly, a method step that "comprises", "has", or "includes" one or more features, or a device element, has those one or more features, but is not limited to having only those one or more features. Additionally, a device or structure that is configured in a particular way may be configured in at least that way, but not limited to being configured in a way that is not described.

[0056] The present invention has been described with reference to preferred embodiments. It is understood that the structural and operational embodiments described herein are examples of several possible configurations for providing the same general functions, characteristics, and general system operations. Changes and modifications will occur to those skilled in the art upon reading and understanding the above detailed description. It is intended that the present invention be construed as including all such modifications and alterations.

Claims

1. Bar and A guide; the guide includes an elongated opening; at least a portion of the elongated opening comprises a substantially circular opening having a lateral dimension greater than a lateral dimension of an adjacent portion of the elongated opening; At least a portion of the elongated opening comprises a substantially circular opening having a larger lateral dimension than an adjacent portion of the elongated opening; The circular opening is configured to receive at least a portion of the bar therein and therethrough, such that the bar can be manipulated along a length of the elongated opening. Orthopedic instrumentation systems.

2. The guide comprises a body having at least one lobe extending laterally therefrom. The orthopaedic surgical instrument system of claim 1 .

3. the at least one lobe comprises a pair of lobes extending laterally from opposite sides of the body; The orthopaedic surgical instrument system of claim 2 .

4. each of the pair of lobes includes a groove disposed in a central portion of the respective lobe; the grooves extending from the top surface to the bottom surface of each of the lobes; The orthopaedic surgical instrument system of claim 3.

5. and at least one stabilization wire configured to removably connect the guide to a bone of the patient. The orthopaedic surgical instrument system of claim 1 .

6. the guide is substantially symmetrical about at least one plane passing through the guide; The orthopaedic surgical instrument system of claim 1 .

7. the at least one plane intersects or is coplanar with a longitudinal axis extending along the length of the elongated opening; The orthopaedic surgical instrument system of claim 6.

8. the bar having a first end opposite the shaft from a second end; the first end having a shape configured for releasable connection with a powered instrument; The orthopaedic surgical instrument system of claim 1 .

9. the second end of the bar comprises a contact portion; The orthopaedic surgical instrument system of claim 8.

10. the contact portion has a shape larger in at least one dimension than the shaft and the first end of the bar; 10. The orthopaedic surgical instrument system of claim 9.

11. a shaft having a first end and a second end opposite each other; the first end includes at least one feature configured to releasably connect with a tool; Bar fixtures.

12. the second end includes a contact portion; The contact portion has a shape having at least one lateral dimension larger than the shaft or the first end.

12. The bar device of claim 11.

13. the contact portion is configured to act as a mechanical stop; further comprising a substantially cylindrical shape having a plurality of members protruding from an outer surface of the contact portion, the plurality of members extending a length and / or a circumference of the outer surface; the plurality of members extend outwardly from the outer surface at at least one of an angle perpendicular or oblique to the outer surface; 13. The bar device of claim 12.

14. The main body, a pair of lobes extending laterally from the body; The body includes: an elongated opening extending from a top surface to a bottom surface of the body; a circular opening extending from a top surface to a bottom surface of the body; guide.

15. The elongated opening and the circular opening are in fluid communication with each other. A guide as claimed in claim 14.

16. the circular opening has a lateral dimension greater than a lateral dimension of the elongated groove; 16. A guide as claimed in claim 15.

17. Each lobe has a groove; The grooves extend from a top surface to a bottom surface of each groove. A guide as claimed in claim 14.

18. each said lobe having a substantially curved shape; 18. A guide as claimed in claim 17.

19. the bar guide is symmetrical about a plane overlapping a longitudinal axis extending along the length of the elongated groove; A guide as claimed in claim 14.

20. the elongated groove includes a recess extending along at least a portion of the length of the elongated groove; The recess is disposed adjacent to an upper surface of the body. A guide as claimed in claim 14.

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