Anatomical patellofemoral joint prosthesis

A femoral, anatomical technology, applied in prosthesis, knee joint, elbow joint, etc., can solve the problems of patellar prosthesis wear, skin coloration, high shear force of patella joint

Inactive Publication Date: 2022-06-03
WUXI NO 2 PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing anatomical patellofemoral prosthesis still has some drawbacks. The traditional patella will experience prosthetic wear, which is usually accompanied by excessive shear force on the patellar joint due to soft tissue imbalance caused by misplaced components. However, if there is a long-term metal wear problem, the skin will appear some coloring, so we propose an anatomical patellofemoral joint prosthesis

Method used

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  • Anatomical patellofemoral joint prosthesis
  • Anatomical patellofemoral joint prosthesis
  • Anatomical patellofemoral joint prosthesis

Examples

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Embodiment

[0033] like figure 1 - Figure 7 As shown, an anatomical patellofemoral joint prosthesis comprises a femoral part 1, a fibula part 2 is connected to the femoral part 1, a tibia part 3 is connected to one side of the fibula part 2, a patella part 4 is installed on the femoral part 1, A mounting assembly 5 is provided on the outer wall of the femoral portion 1, and the mounting assembly 5 includes a threaded fastening groove 51 opened in the inner walls of both sides of the femoral portion 1, a threaded fastening rod 52 threadedly connected with the threaded fastening groove 51, and fixed on the threaded fastening groove 51. The limit mounting plate 53 on the outer wall of the rod 52 and the upper and lower ends of the patella portion 4 are respectively connected with the quadriceps femoris muscle 6 and the patellar tendon 7 .

[0034]Two screw fastening grooves 51 are provided on the outer wall of the femoral part 1 at the contact position of the femoral part 1 and the patella...

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Abstract

The invention discloses an anatomical patellofemoral joint prosthesis which comprises a thighbone part, a fibula part is connected to the thighbone part, a tibia part is connected to one side of the fibula part, a patella part is installed on the thighbone part, and an installation assembly is arranged on the outer wall of the thighbone part. The mounting assembly comprises threaded fastening grooves formed in the inner walls of the two sides of the thighbone part, threaded fastening rods in threaded connection with the threaded fastening grooves and limiting mounting plates fixed to the outer walls of the threaded fastening rods, and the upper end and the lower end of the patella part are connected with quadriceps femoris and patella tendons correspondingly; according to the patella prosthesis, the installation assembly is arranged and comprises the threaded fastening groove, the threaded fastening rod, the limiting installation plates, the closing plate and the groove, the installed patella can be placed correctly through the pushing-in direction formed by the two sets of limiting installation plates, and the patella prosthesis is not prone to being abraded.

Description

technical field [0001] The invention relates to the technical field of patella joints, in particular to an anatomical patellofemoral joint prosthesis. Background technique [0002] Among the artificial joint replacements, hip and knee replacements are the most widely used clinical procedures. With the development of various artificial joints, researchers have found that the mechanical properties of the prosthesis and the mechanical distribution of the patient's joint after implantation have a decisive impact on the life of the artificial joint. Among the artificial joint replacements, hip and knee replacements are the most widely used clinical procedures. The structure and function of the knee joint are the most complex among the human joints. The initial research methods are all based on the finite element analysis method of the hip joint. Due to the anatomical complexity of the knee joint (three bones: femur, tibia, skeleton and the surface cartilage tissue of the three;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/3859A61F2/3877A61F2002/30199A61F2002/30433
Inventor 王星亮施克勤杨晓杨玉生
Owner WUXI NO 2 PEOPLES HOSPITAL
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