Medial femoral single condyle prosthesis, lateral femoral single condyle prosthesis, and femoral trochlea prosthesis

A femur and prosthesis technology, applied in the field of unicompartment replacement prosthesis, can solve the problems of unrecoverable height and uncorrectable knee varus deformity, and achieve the effect of simplifying design parameter values

Pending Publication Date: 2017-10-24
温晓玉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this groove has no clinical evidence to prove that it has an impact on the kinematics of the knee joint or the service life of the prosthesis, in fact this groove is where the most distal end of the femur is located, and its height cannot be restored, resulting in an uncorrectable knee varus deformity

Method used

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  • Medial femoral single condyle prosthesis, lateral femoral single condyle prosthesis, and femoral trochlea prosthesis
  • Medial femoral single condyle prosthesis, lateral femoral single condyle prosthesis, and femoral trochlea prosthesis
  • Medial femoral single condyle prosthesis, lateral femoral single condyle prosthesis, and femoral trochlea prosthesis

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Embodiment Construction

[0040] Specific embodiments of the present disclosure will be described in detail below, and it should be noted that the embodiments described here are only for illustration, and are not intended to limit the present disclosure. 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 these specific details need not be employed to practice the present disclosure. In other instances, well-known materials or methods have not been described in detail in order to avoid obscuring the present disclosure.

[0041] According to the embodiment of the present disclosure, the UKA prosthesis (including the medial femoral condyle, the lateral femoral condyle and the articular surface of the trochlear trochlear), its shape is closest to the geometric features of the femoral condyle and the trochlear part of the normal human body. The fo...

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Abstract

Disclosed are a medial femoral unicondylar prosthesis (201), a femoral lateral unicondylar prosthesis (301), and a femoral trochlear prosthesis (401). The medial femoral unicondylar prosthesis includes: the articular surface, which is the surface in contact with the inner side of the patella and the inner side of the tibial plateau during the movement of the knee joint. arc segment (203), which is shown as arc segment (95) on the first circle (94) on the coronal position; The portion of the surface and the bone cement is shown as the medial posterior condyle (202) of the linear section, and the medial distal end (209) consistent with the articular surface arc (203). The prosthesis using the above embodiments of the present disclosure can be closer to the geometry of the femoral condyle of a normal human body, and simplifies the design parameter values ​​of various types of femoral prostheses.

Description

technical field [0001] The present disclosure relates to an artificial knee joint prosthesis, in particular to a unicompartmental replacement prosthesis applied to early knee medial compartment, lateral compartment and patellofemoral osteoarthritis. Background technique [0002] The knee joint is divided into three compartments, the medial, lateral, and patellofemoral compartments. Early knee osteoarthritis (OA) can involve any compartment, but especially the medial compartment of the knee joint. At this time, the line of force of the knee joint is shifted to the inside (varus deformity), resulting in excessive wear of the medial compartment, causing thinning and stripping of the cartilage surface of the medial femoral condyle and the corresponding medial tibial plateau. Typical symptoms of medial compartment OA are varus deformity, pain with articular cross-cords, osteophyte formation, and collateral ligament laxity. Conservative treatment or non-surgical treatment measur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/3859A61F2/30721A61F2/389A61F2002/30112A61F2002/30125A61F2002/30433
Inventor 温晓玉
Owner 温晓玉
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