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Anatomical knee joint prosthesis

A knee joint prosthesis, anatomical technology, applied in the direction of knee joint, elbow joint, joint implant, etc., can solve the problems of flexion and extension movement not reaching physiological movement, abnormal force line, imbalance, etc., and reduce patellar elastic effect on rattling and anterior knee pain, increasing stable attachment, preventing paradoxical movements

Pending Publication Date: 2020-07-24
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The above-mentioned scheme has the following disadvantages: it does not conform to the anatomical characteristics of the human body, and it is easy to cause the soft tissues on both sides of the knee joint to be unbalanced in the state of flexion and extension, which will lead to joint instability, incorrect force line, poor postoperative function, and flexion and extension exercises that cannot meet the needs of physiological exercises The occurrence of problems such as knee joint proprioception and prosthesis survival rate

Method used

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  • Anatomical knee joint prosthesis
  • Anatomical knee joint prosthesis
  • Anatomical knee joint prosthesis

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0042] figure 1 and figure 2An anatomical knee joint prosthesis disclosed in the present invention includes a femoral condyle 1 , a tibial plateau pad 2 and a tibial plateau support 3 . The femoral condyle 1 is a C-shaped semi-surrounding structure. The femoral condyle 1 includes a pulley 12 extending along its contour, an anterior condyle 11 located at one end of the pulley 12, an intercondylar groove 13 for accommodating the column 21, and an intercondylar groove 13 located on both sides of the intercondylar groove 13. The posterior condyle14.

[0043] The intercondylar groove 13 runs through the femoral condyle 1 , and its length direction is set along the contour of the femoral condyle 1 . The inner side wall of the femoral condyle 1 is fixed with a groove vertical plate 15 surrounding the intercondylar groove 13, the groove vertical plate 15 and the ...

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Abstract

The invention relates to an anatomical knee joint prosthesis. The anatomical knee joint prosthesis comprises a femoral condyle, a tibial plateau pad and a tibial plateau support. An upright post protruding upwards is arranged on the tibial plateau pad. The femoral condyle comprises a pulley, a preartis, an intercondylar groove and a postartis. The thickness of the postartis at the external condyleis 6-8 mm, and the thickness of the postartis at the internal condyle is 8-10 mm. The connecting line between the maximum curvature point on the postartis at the external condyle and the maximum curvature point on the postartis at the internal condyle forms an included angle of 3 degrees with the horizontal plane. The connecting line between the end part of the postartis and the end of the intercondylar groove forms an included angle of 15 degrees with the horizontal plane. The top surface of the inner side of the plateau and the top surface of the outer side of the plateau are both in the shape of a curved surface with a concave inner part and a convex edge, and the inner side of the plateau further sinks towards the inner part of the tibial plateau pad relative to the outer side of theplateau. The tibial plateau pad and the tibial plateau support are fixedly connected in a clamping manner. The anatomical knee joint prosthesis has the effect of better fitting the human body.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anatomical knee joint prosthesis. Background technique [0002] Most knee joints are designed with symmetrical femoral condyles, tibial plateau pads and tibial plateau pads, and a combination of symmetrically designed femoral condyles and tibial plateau pads. [0003] The above-mentioned scheme has the following disadvantages: it does not conform to the anatomical characteristics of the human body, and it is easy to cause the soft tissues on both sides of the knee joint to be unbalanced in the state of flexion and extension, which will lead to joint instability, incorrect force line, poor postoperative function, and flexion and extension exercises that cannot meet the needs of physiological exercises The emergence of problems such as knee joint proprioception and prosthesis survival rate. Contents of the invention [0004] In view of the deficiencies in the prior ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/3859A61F2/389A61F2002/30884A61F2002/30828A61F2002/30879A61F2002/30878A61F2002/305A61F2/3886
Inventor 解凤宝史春宝韩川
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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