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Femoral prosthesis and tibial prosthesis for artificial knee arthroplasty

A technology of artificial knee joint and femur, applied in the direction of knee joint, prosthesis, elbow joint, etc., can solve the problems of damage to the stability of knee joint prosthesis, prosthesis wear, etc., and achieve the effect of simplifying the design parameter value

Pending Publication Date: 2017-10-24
杨晨
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this sudden large jump of the center of rotation will damage the stability of the knee prosthesis and cause the wear of the prosthesis

Method used

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  • Femoral prosthesis and tibial prosthesis for artificial knee arthroplasty
  • Femoral prosthesis and tibial prosthesis for artificial knee arthroplasty
  • Femoral prosthesis and tibial prosthesis for artificial knee arthroplasty

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Embodiment Construction

[0050] 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.

[0051] The shape of the TKA femoral prosthesis according to the embodiments of the present disclosure is closer to the geometric characteristics of the femoral condyle and trochlear part of a normal human body. The following one or more embodiments describe the ellipse principle and the design method applied to the femoral pro...

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Abstract

The invention discloses femoral prosthesis (100) and tibial prosthesis (150) for artificial knee arthroplasty. The femoral prosthesis (100) comprises a medial malleolus part (51) and an inner side trochlea part (131), the articular surface of the medial malleolus part represents to be one arc on a first oval (38) on a sagittal position, the articular surface of the inner side trochlea part represents to be one arc on a second oval or a circle (40) on a sagittal position, an outer side element (91,141) comprises an outer side trochlea part (141) and an extramalleolus part (91), the articular surface of the outer side trochlea part represents to be one arc on a third oval or round (80) on a sagittal position, and the articular surface of the extramalleolus part represents to be one arc on a fourth oval (78) on a sagittal position. According to the femoral prosthesis (100) and tibial prosthesis (150) for the artificial knee arthroplasty, the prosthesis can be closer to a geometrical morphology of the femoral condyle of the human body, and the design parameter values of femur prosthesis in different model numbers are dramatically simplified.

Description

technical field [0001] The disclosure relates to artificial knee joint replacement technology, in particular to a femoral side prosthesis for artificial knee joint replacement. Background technique [0002] Total knee arthroplasty (TKA) is the best way to treat advanced osteoarthritis, rheumatoid arthritis or traumatic arthritis. According to the Agency for Healthcare Research and Quality, more than 600,000 TKA procedures are performed in the United States alone a year, with a total cost of tens of billions of dollars. Typically, knees undergoing TKA have a partial resection of the distal femur to receive the femoral component and partial resection of the proximal tibia to receive the tibial component. The geometric characteristics of the articular surface of femoral prosthesis components directly affect the function of the knee joint after operation, so the design of femoral prosthesis is very important. Only the femoral prosthesis that is the closest to the geometry of t...

Claims

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Application Information

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IPC IPC(8): A61F2/38
CPCA61F2/3859A61F2/389A61F2002/30317A61F2002/30112A61F2002/30108A61F2002/30125
Inventor 杨晨
Owner 杨晨
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