197 results about "Osteotomy guide" patented technology

A method and apparatus for performing a minimally invasive total hip arthroplasty. An approximately 3.75-5 centimeter (1.5-2 inch) anterior incision is made in line with the femoral neck. The femoral neck is severed from the femoral shaft and removed through the anterior incision. The acetabulum is prepared for receiving an acetabular cup through the anterior incision, and the acetabular cup is placed into the acetabulum through the anterior incision. A posterior incision of approximately 2.5-3.75 centimeters (1-1.5 inches) is generally aligned with the axis of the femoral shaft and provides access to the femoral shaft. Preparation of the femoral shaft including the reaming and rasping thereof is performed through the posterior incision, and the femoral stem is inserted through the posterior incision for implantation in the femur. A variety of novel instruments including an osteotomy guide; an awl for locating a posterior incision aligned with the axis of the femoral shaft; a tubular posterior retractor; a selectively lockable rasp handle with an engagement guide; and a selectively lockable provisional neck are utilized to perform the total hip arthroplasty of the current invention.

An improved osteotomy guide and retraction device for use during the performance of bunionectomies, whereby the improved device provides a self-supporting instrument that does not require independent fastening means to secure the device in the desired position at the surgical site, and a method of use of the device.

An osteotomy guide having a frame and a pair of guide pins, for creating a desired cut in a bone. The frame has an outer frame, and an inner frame which is telescopically mounted within the outer frame. Both the inner frame and outer frame having open ends and a guide pin sleeve. The inner frame and outer frame together define a main slot which is adjustable in length by moving the inner frame with respect to the outer frame. The frame is mounted to the bone by creating anchoring holes in the bone and extending the guide pins through the guide pin sleeves and into the anchoring holes, such that the guide pins are parallel in all planes. A controlled cut is created by using the guide pins as a visual guide or inserting a saw blade through the main slot.

An osteotomy guide is provided for cutting a bone, such as the medial distal tibia, to facilitate an ankle replacement. The osteotomy guide includes a positioning device having a number of fixation points, a first guide member structured to align with a first portion of the bone, in order to perform a first procedure, thereon, and a second guide member structured to align with a second portion of the bone, in order to perform a second procedure thereon. The fixation points engage the bone and maintain alignment of the first guide member with respect to the first portion during the first procedure, and maintain alignment of the second guide member with respect to the second portion during the second procedure, in order that the first procedure and the second procedure are substantially reproducible.

A method and apparatus for performing a minimally invasive total hip arthroplasty. An approximately 3.75-5 centimeter (1.5-2 inch) anterior incision is made in line with the femoral neck. The femoral neck is severed from the femoral shaft and removed through the anterior incision. The acetabulum is prepared for receiving an acetabular cup through the anterior incision and the acetabular cup is placed into the acetabulum through the anterior incision. A posterior incision of approximately 2-3 centimeters (0.8-1.2 inches) is generally aligned with the axis of the femoral shaft and provides access to the femoral shaft. Preparation of the femoral shaft including the reaming and rasping thereof is performed through the posterior incision, and the femoral stem is inserted through the posterior incision for implantation in the femur. A variety of novel instruments including an osteotomy guide an awl for locating a posterior incision aligned with the axis of the femoral shaft, a tubular posterior retracter, a selectively lockable rasp handle with an engagement guide; and a selectively lockabele provisional neck are utilized to perform the total hip arthroplasty of the current invention.

An improved osteotomy guide and retraction device for use during the performance of bunionectomies, whereby the improved device provides a self-supporting instrument that does not require independent fastening means to secure the device in the desired position at the surgical site, and a method of use of the device.

The invention discloses a femoral positioning method, personalized osteotomy guide plate and personalized prosthesis for total knee replacement and relates to the technical field of total knee replacement. The femoral positioning method includes: detecting whether a three-dimensional digital femoral model is introduced in, wherein the three-dimensional digital femoral model is established based onscanning data of a patient's knee; if yes, using chromatography to position the three-dimensional digital femoral model to obtain at least one femoral distal osseous marker point. The femoral positioning method, personalized osteotomy guide plate and personalized prosthesis for total knee replacement can precisely position multiple osseous marker points at the distal end of the femur, and accuracy and repeatability are high; the personalized osteotomy guide plate is established according to the characteristics of femoral epicondylar axis and the three-dimensional reconstructed femoral distalsurface; the prosthesis is established by precise matching according to the characteristics of the femoral distal end after the personalized osteotomy guide plate is used to perform simulation osteotomy, and the prosthesis is applied to implementing of personal design.

A sequential dental surgical guide system and method for immediate load is described. The system includes 1) a tooth and tissue borne surgical guide with fixation pins and bone reduction osteotomy sites 2) an implant osteotomy guide and 3) a prosthesis guide. The system does not rely on any anatomical reference points such as tissue or bone after placement of the first tooth and tissue borne reference guide. The sequential guide(s), both surgical implant placement and prosthesis guide rely on the original fixation positions determined by the first guide. Digital treatment planning and design are used to accurately place each sequential guide back to the original fixation pin positions. The fixation pin reference can be pinned and repined in the same sites per sequential guide or fixed in the jaw through the protocol by keeping them in place and switching out the guides.

The invention provides a total knee arthroplasty robot auxiliary system, a control method, electronic equipment, and a computer-readable medium. The auxiliary system comprises a pre-operative planningsystem, an intraoperative planning system and an execution system, wherein the pre-operative planning system is used for formulating pre-operative planning, wherein the pre-operative planning data comprises a knee image; the intraoperative planning system is used for formulating intraoperative planning, wherein the knee image in the pre-operative plan and a knee surface profile determined in theoperation of a patient are subjected to image registration; knee dynamic spacing force line data at a continuous flexion angle is acquired; visual displaying of a dynamic spacing force line data graphis performed; prosthesis planning is adjusted according to the visual display of the dynamic spacing force line data graph to obtain intraoperative planning; and the execution system is used for guiding an osteotomy guide mounted at the operating end of a mechanical arm of the surgical robot to be located in a predetermined position in the planning, wherein the osteotomy guide is used for positioning an osteotomy saw.

The invention relates to a dental trinity composite guide plate with a precise positioning performance and a manufacturing method thereof. The composite guide plate comprises a positioning guide plate, an osteotomy guide plate, and a plantation guide plate. The positioning guide plate is connected to the osteotomy guide plate through a fastening bolt. The plantation guide plate is connected to theosteotomy guide plate through a fastening bolt. The fastening bolts connect the osteotomy guide plate, the positioning guide plate, and the plantation guide plate through No.1 fastening hole, No.2 fastening hole, No.3 fastening hole, No.4 fastening hole, and No.5 fastening hole of the positioning plate, the fastening hole of the osteotomy guide plate, and the fastening hole of the plantation guide plate. The composite guide plate can be applied to immediate plantation and immediate restoration, the error of positioning is avoided, the wounds of patients are reduced, and the surgery process issimplified.

The invention discloses a production method of a 3D printing fibula reconstruction jaw surgical tool combining bone excision with titanium-plate positioning. The method comprises the steps that a jawthree-dimensional model and a fibula three-dimensional model are reconstructed; according to the lesion range, the jaw osteotomy plane is determined, and an expected jaw model is designed; a preforming titanium plate is fixed to the target portion of an expected jaw model entity and subjected to secondary scanning; a titanium plate-expected jaw composite model and a titanium plate model are obtained; the titanium plate-expected jaw composite model, the titanium plate model and an STL file of the expected jaw model are subjected to rectification and alignment; a mandible osteotomy guide plate and a fibula osteotomy guide plate are designed, tack holes in the titanium plate model are correspondingly mapped to the mandible osteotomy guide plate and the fibula osteotomy guide plate, and a special quickly-formed guide plate is formed. According to the produced fibula osteotomy tool, the obtained fibula can be precisely positioned in the tack holes and can be accurately transferred to the jaw according to the design expectation, and the pre-bent titanium plate is used for directly and accurately positioning an acquired bone segment.

Surgical devices, kits and methods of using thereof are described. Generally, the surgical kit includes an osteotomy guide device and / or a bone spacer guide device. The surgical kit can be used in a surgical method for correcting a malalignment of the knee joint that involves performing a fibular osteotomy and / or a tibial osteotomy, and / or administering stem cells. Generally, the osteotomy guide device is configured to allow drilling to occur around the tibia and across a horizontal cross-sectional plane of the tibia so that a direction of each of the drill holes that are formed in the tibia is substantially parallel to or on the same horizontal cross-sectional plane of the tibia. The osteotomy guide device allows drilling to be conducted efficiently and accurately.

The invention discloses a preparation method of an individualized 3D printed high tibial osteotomy guide plate, for an osteotomy guide plate of a 3D printed high tibial osteotomy. Before a surgery, according to the CT data of the knee joint of a patient, through computer simulation modeling and a 3D reconstruction procedure, the deformity shape of the tibia shape of a patient is printed in proportion being 1 to 1, an osteotomy position is designed before the surgery through a 3D printing technique, and finally an osteotomy guider which is completely fitted to the near end of the tibia of the patient is designed through a model material; and in the surgery process, the osteotomy guider is directly fitted to the near end of the tibia in the surgery process, according to the preoperative osteotomy scheme, osteotomy surgery operations are immediately started, under regulation for guaranteeing accuracy, the surgery operation steps are simplified, the anaesthesia time of the surgery is shortened, the safety of the surgery of the patient is guaranteed, and the preparation method has great clinical promotion effects. A steel plate can be fixed according to tibia near ends provided by different factories, the position and the direction of the osteotomy of the tibia can be in individualized design, and the preparation method has definite diversified flexibility.

The invention discloses an osteotomy template for femur extramedullary positioning, and belongs to an auxiliary instrument for an artificial knee joint primary replacement operation. The osteotomy template is used for positioning for distal femur osteotomy in the artificial knee joint primary replacement operation, comprises a tibia surface guide plate (1) and a distal femur osteotomy guide plate (2), and is characterized by further comprising a connecting rod (3), an extramedullary positioning rod (4) and a distal femur osteotomy guide plate fastening nail (5); the tibia surface guide plate (1) can be connected with the distal femur osteotomy guide plate (2) through the connecting rod (3). Through application of the osteotomy template to the artificial knee joint replacement operation, the following advantages can be realized: opening of a femur medullary cavity is not needed, injury and bleeding are reduced, a minimally invasive effect is realized, the pain of a patient is relieved, the knee extension and flexion gaps can be directly determined, osteotomy for several times is not needed, and osteotomy is reduced to the most extent; the osteotomy template is a tool being simple to operate; through adoption of the osteotomy template, the operation duration is shortened, and no any additional cost for preoperative preparation is needed.

The invention discloses an individual craniofacial bone piece auxiliary positioning guide plate system and a preparation method thereof. The system comprises a pre-osteotomy guide plate device and a post-osteotomy guide plate device, wherein the pre-osteotomy guide plate device is formed by fixedly connecting a set of reference guide plates and fixed guide plates by pre-osteotomy connecting rods,and the post-osteotomy guide plate device is formed by fixedly connecting another set of reference guide plates and fixed guide plates by post-osteotomy connecting rods. The preparation method comprises the following steps of: firstly, acquiring a three-dimensional model of the preoperative craniofacial bone tissue by three-dimensional reconstruction software; secondly, designing solid models of the pre-osteotomy connecting rods for connecting the reference guide plates and fixed guide plates, wherein the reference guide plates, the fixed guide plates and the solid models of the pre-osteotomyconnecting rods form a solid model of the pre-osteotomy guide plate device; thirdly, designing solid models of post-osteotomy connecting rods for connecting the reference guide plates and fixed guideplates, wherein the reference guide plates, the fixed guide plates and the solid models of the post-osteotomy connecting rods form a solid model of the post-osteotomy guide plate device; and finally,processing the pre-osteotomy guide plate device and the post-osteotomy guide plate device according to the solid models.

Surgical devices, kits and methods of using thereof are described. Generally, the surgical kit includes an osteotomy guide device and / or a bone spacer guide device. The surgical kit can be used in a surgical method for correcting a malalignment of the knee joint that involves performing a fibular osteotomy and / or a tibial osteotomy, and / or administering stem cells. Generally, the osteotomy guide device is configured to allow drilling to occur around the tibia and across a horizontal cross-sectional plane of the tibia so that a direction of each of the drill holes that are formed in the tibia is substantially parallel to or on the same horizontal cross-sectional plane of the tibia. The osteotomy guide device allows drilling to be conducted efficiently and accurately.

The invention relates to a total knee replacement digital osteotomy guiding plate manufacturing method and device. The total knee replacement digital osteotomy guiding plate manufacturing method comprises that based on a three dimensional digital model of an osteotomy position of a present patient, the surface data of the bone binding face being close to the osteotomy position is extracted, and the surface data is fitted to a curved surface then is thickened to obtain a customized positioning plate; a standard guiding plate corresponding to the osteotomy position is called, and the standard guiding plate is provided with an osteotomy groove with a guiding surface positioned on the osteotomy plane; digital combination of the customized positioning plate and the standard guiding plate is completed in a computer; and the actual product is manufactured by means of a material increase manufacturing method. The total knee replacement digital osteotomy guiding plate comprises two parts containing the customized positioning plate and the standard guiding plate, the problem that the completely-customized design cannot be manufactured easily, and the completely-standard osteotomy guide plate cannot be used easily and is low in precision is solved, the customized total knee replacement guiding plate is designed simply and manufactured intensively, and therefore the design and manufacture cost of the guiding plate is reduced, and the complexity of the operation auxiliary apparatus is reduced.

An embodiment of the invention discloses a high tibial biplane osteotomy navigation guide plate. The guide plate comprises an upper split guide plate and a lower split guide plate which are fixedly connected by two connecting rods. An osteotomy guide groove is formed between the upper split guide plate and the lower split guide plate. Two non-parallel kirschner wire fixing guide holes are formed in the middles of the upper split guide plate and the lower split guide plate. Parallel guide holes are formed in the upper part of the upper split guide plate. One side of the upper split guide plateis provided with an angle guide backup plate. The upper split guide plate and the lower split guide plate are respectively provided with an upper angle positioning rod and a lower angle positioning rod in a vertical corresponding mode, and the end portions are respectively connected with an upper angle positioning guide hole and a lower angle positioning guide hole. The guide plate can not only eliminate the difference between experiences of doctors in a surgery, but also greatly reduce the operation time and the amount of bleeding during the surgery to achieve the best ideal state of osteotomy. The recovery time of a patient is greatly reduced, postoperative complications are reduced, and expenses in the recovery period are saved.

The invention discloses a distal femur and anterior and posterior condyle measuring and positioning osteotomy device for knee joint replacement. The device comprises a tibial osteotomy surface guide plate, a thighbone posterior condyle osteotomy guide plate, a thighbone anterior condyle osteotomy guide plate, connecting screws and a measuring probe, wherein the tibial osteotomy surface guide plate is provided with a thighbone posterior condyle osteotomy guide plate clamping groove connected with a thighbone posterior condyle osteotomy guide plate clamping strip; the thighbone posterior condyle osteotomy guide plate is provided with a measuring probe insertion hole connected with a measuring probe insertion rod; the thighbone posterior condyle osteotomy guide plate is provided with thighbone anterior condyle osteotomy guide plate insertion openings connected with a thighbone anterior condyle osteotomy guide plate insertion plate; thighbone posterior condyle osteotomy guide plate connection holes are connected with thighbone anterior condyle osteotomy guide plate insertion plate screw holes through the connecting screws; thighbone posterior condyle osteotomy guide plate fixing nails pass through fixing nail holes in the thighbone posterior condyle osteotomy guide plate to fix the thighbone posterior condyle osteotomy guide plate to thighbones. By means of the technology, operative injuries are remarkably reduced, a femoral prosthesis is positioned accurately, the operative process is simple, and operative cost is lowered.

The invention relates to a tibia osteotomy guider, which belongs to the technical field of orthopedic medical instruments and comprises an osteotomy guide part, a driving component for driving the osteotomy guide part to move and a retroversion adjusting component for adjusting a tibia retroversion angle. The osteotomy guiding piece comprises an arc-shaped plate and a fixing plate, and the arc-shaped plate and the fixing plate are perpendicularly arranged and fixedly connected. The arc-shaped plate is provided with a transverse osteotomy guide groove extending in the length direction of the arc-shaped plate, and the transverse osteotomy guide groove penetrates through the two sides of the arc-shaped plate. A longitudinal osteotomy guide groove is formed in the fixing plate and penetrates through the two sides of the fixing plate. The tibia osteotomy guider has the effects of quickly adjusting the osteotomy position and accurately adjusting the retroverted angle during knee joint unicompartmental knee arthroplasty and facilitating a doctor to quickly and accurately cut off a tibia lesion part, the success rate of an operation is increased, the pain of a patient is reduced, and the satisfaction degree of the patient is guaranteed.

Osteotomy tools and procedures are provided that include a sets of guides in which pins are placed through conduits in the guides with a close tolerance and into into the bone at predetermined angles. One one pin is placed at a correction angle subtending from one of a pair of parallel pins placed across an osteotomy site. After the osteotomy is completed, a bone correction is achieved by rotating the pin at the correction angle to be parallel to the one of the parallel pins located across the osteotomy site. A parallel pin guide is placed over these two pins to maintain the bone correction and stabilize the osteotomy, allowing fixation of the corrected bone segments.

The invention relates to the field of facial skeleton contour reconstruction operation, in particular to a method for preparing mandibular angle osteotomy guide plates on the basis of 3D (three-dimensional) printing. The method includes converting two-dimensional CT (computed tomography) data into three-dimensional models by the aid of software; simulating osteotomy on the three-dimensional modelsand designing arc-shaped osteotomy lines; extracting excision mandibular angle bone block data from the three-dimensional models and converting the excision mandibular angle bone block data into files in STL (standard template library) formats; processing the files in the STL formats by the aid of automatic reverse engineering software and completely designing guide plates; importing data into 3Dprinting machines and printing mandibular angle osteotomy guide plate prototypes; processing the mandibular angle osteotomy guide plate prototypes to obtain the ultimate mandibular angle osteotomy guide plates. The method has the advantages that the osteotomy lines can be preoperatively precisely designed on the computer three-dimensional models by the aid of computer software three-dimensional designs and 3D printing technologies, and accordingly personalized and digital osteotomy guide plates which can be completely matched with three-dimensional forms of bones of mandibular angle regions can be manufactured; entity osteotomy guide plates can be printed by the aid of the 3D printing technologies, operation region guide osteotomy is implanted during operation, and accordingly the accuracy of the operation can be improved.

The invention relates to a distal femur osteotomy positioning and guiding device and a positioning method thereof. The distal femur osteotomy positioning and guiding device comprises a positioning device and a measuring device. The positioning device comprises a first positioning plate, a screen plate, a femur cutting groove, a connection block, an osteotomy guide block, a fixing screw and a positioning screw. The measuring device comprises a first measuring plate, a second measuring plate and a pushing nut. The distal femur osteotomy positioning and guiding device has the advantages that osteotomy thickness can be measured accurately, osteotomy direction and thickness can be accurately quantified by inserting the positioning screw into the screen plate, the angle of the osteotomy face on the vertical plane is adjusted through selection of the positioning screw at different angles to meet preoperative design requirements, and finally, personalized accurate TKA (total knee arthroplasty) osteotomy is realized; the extramedullary positioning technology is adopted, so that interference on femur marrow cavities is avoided, intraoperative bleeding is reduced, surgical effect is improved, and surgical risk is lowered.

The invention provides an osteotomy guide plate assembly, comprising an osteotomy guide plate used to be mounted on the first preset position of a to-be-cut bone. The osteotomy guide plate is provided with a sawing channel used to guide and limit moving track of an oscillating saw, so that the oscillating saw moves in the sawing channel to cut the preset position of the to-be-cut bone. Using the osteotomy guide plate assembly of the technical scheme, through arranging the osteotomy guide plate, the osteotomy guide plate is arranged on the first preset position of the to-be-cut bone. The osteotomy guide plate is provided with the sawing channel used to guide and limit moving track of the oscillating saw, so that the oscillating saw moves in the sawing channel to cut the preset position of the to-be-cut bone. In a Ganz osteotomy, the osteotomy guide plate assembly can accurately position an osteotomy track, reduces degree of dependency on experience of a doctor, so that an operation process is standardized, and is accurate and repeatable, and problems in the prior art that a Ganz osteotomy mainly relays on experience of a doctor, and that precision and repeatability are hard to guarantee and risk is high are solved.

A method for correcting position of an osteotomy guide tool and an orthopedic operation system are disclosed. A trackable element mounted on the osteotomy guide tool or on the robotic arm tracks the position of the osteotomy guide tool and generates position information of the trackable element. According to the current position and the desired position of the trackable element, a robotic arm drives the osteotomy guide tool and the trackable element to move, until the trackable element is moved to the desired position. This method does not need to consider the absolute position accuracy of the robotic arm, and does not rely on the experience of the surgeon. The tool has several guiding features, which can provide guides for osteotomy operations, so that the same osteotomy guide tool can perform multiple operations of osteotomy and punching, thus greatly reducing the operation time and improving the operation efficiency.

The invention provides a personalized knee joint osteotomy guide plate assembly, which comprises a personalized knee joint distal femur osteotomy guide plate, a personalized knee joint proximal tibiaosteotomy guide plate, an osteotomy groove metal assembly, and a location hole metal sleeve. The personalized knee joint osteotomy guide plate assembly ingeniously utilizes personalized osteophyma ofthe intraoperative patient as a location marker of the distal femur osteotomy guide plate and the proximal tibia osteotomy guide plate without using articular cartilage for fixing, accordingly intraoperative positioning and entrapment are easy and are not affected by articular cartilage. When the distal femur osteotomy guide plate and the femoral cortex are fixed and entrapped well, the position is where the osteotomy guide plate is arranged and the distal femur osteotomy is conducted, so that no medullary opening location is required, surgical procedure is reduced, and time is saved.

The invention discloses a DDH (Developmental Dysplasia of Hip) osteotomy guide plate. The DDH osteotomy guide plate comprises a fixed end and a rotary end, which are fitted onto the surface of a bone of an osteotomy region; the fixed end is connected with the rotary end through a connecting module. According to the DDH osteotomy guide plate, the surgical precision can be improved by adopting the osteotomy guide plate; surgical steps in a surgery are simplified and the surgical time is shortened; a doctor does not need to judge a correction angle by experience in an orthopedic osteotomy surgery, so that the accuracy is improved and surgical risks are reduced. Meanwhile, the demand threshold on experience of doctors by the surgeries is reduced. The invention provides a manufacturing method of the DDH osteotomy guide plate; the osteotomy guide plate can be accurately and conveniently manufactured by adopting the manufacturing method. The invention provides an application method of the DDH osteotomy guide plate and the surgical time can be shortened by the method.

The invention discloses a knee joint introversion and extroversion osteotomy orthopedic guide plate and a manufacturing method thereof. The knee joint introversion and extroversion osteotomy orthopedic guide plate is prepared through the manufacturing method of the knee joint introversion and extroversion osteotomy orthopedic guide plate. A finished product of the knee joint introversion and extroversion osteotomy orthopedic guide plate comprises an osteotomy orthopedic guide plate body, a first osteotomy guide groove, a second osteotomy guide groove and a kirschner wire positioning guide column; the osteotomy orthopedic guide plate body is attached to the surface of a bone on the affected side; the first osteotomy guide groove and the second osteotomy guide groove are both formed on the osteotomy orthopedic guide plate body and coincided with a determined osteotomy angle and a determined osteotomy position; and the kirschner wire positioning guide column is installed at the needle inserting position of the osteotomy orthopedic guide plate body. According to the invention, the personalized osteotomy guide plate for a patient can be manufactured, knee joint introversion and extroversion can be accurately corrected, the force lines of the lower limbs on the two sides can be guaranteed, and the overall length of the lower limbs on the two sides can be recovered.

The invention provides a 3D-printing-based restoration rebuilding method of large-range osteochondral lesions of the talus. According to the method, the ankle joint is subjected to CT (Computed Tomography) scanning; then, an obtained image is subjected to single-talus division and 3D rebuilding to obtain a single-talus 3D rebuilding image model; a space to be processed is marked according to a focus region displayed on the 3D rebuilding image model; on the basis of the space to be processed, a 3D printing talus component and osteotomy guide plate with screw holes is generated; finally, the space to be processed is subjected to data processing layer slicing; the layer slicing data is exported; and a man-made talus component and osteotomy guide plate is obtained through 3D printing. The method provided by the invention can realize the treatment on the large-range osteochondral lesions of the talus and the restoration rebuilding on the osteochondral defect of the talus after the focus clearance.

Patient-specific guides for a tibial tubercle osteotomy are provided. The guides include a guide body (102, 302) defining a portion with a bone-engaging surface (103, 303) that conforms as a negative surface to a corresponding surface of a specific patient's tibia, and a guide portion that guides a surgical instrument to a specific location on the specific patient's tibia, wherein the bone-engaging surface and guide portion are configured during a pre-operative planning stage. The guide portion can be formed by pins (124) inserted in a plurality of apertures (110, 116, 120), or planar slots (304, 314, 315,). The apertures or slots are positioned in three straight lines (112, 118, 122; or 306, 316, 317) to provide a saw guide for resecting planes in the tibia. An implantable wedge (200a, 200b) to be positioned in the created gap (136), and methods for performing a tibial tubercle osteotomy with the patient-specific guides are also provided.