Modular knee prosthesis

A knee joint prosthesis, modular technology, applied in the field of knee joint prosthesis kits, can solve the problems of lateralization, patella dislocation, etc.

Active Publication Date: 2020-01-17
斯蒂芬埃格利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Any looseness on the medial side will cause the femoral component to rotate inwardly, which will orient the trochlea inwardly, thus potentially causing lateralization, which can lead to patellar misalignment
In summary, the main disadvantage of the femoral component of the whole knee is that the implant has a set relationship between the shape and orientation of the condyle and the shape and orientation of the trochlear groove

Method used

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  • Modular knee prosthesis
  • Modular knee prosthesis
  • Modular knee prosthesis

Examples

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Embodiment Construction

[0023] refer to Figure 1A , shows a modular total knee prosthesis assembly kit 10 for replacing the resected articular surface of the distal femur. Figure 1B Depicted are the bicondylar component 20 and the first 50 and second 70 trochlear component, anatomically shaped for replacement of the patient's right knee joint. A mirror image of the part will represent an example design for the patient's left knee. Figure 1B shown with Figure 1A Same parts, but with different angles. It should be noted that the knee prosthesis assembly kit 10 may include additional bicondylar components 20 and / or trochlear groove components 50; slightly different, which will be explained in more detail later. In this example, the trochlear channel member 50; 70 and the bicondylar member 20 are both unitary members (ie, constructed from a single piece). When assembled together, the bicondylar component 20 and one of the trochlear components 50, 70 form a (modular) femoral component. In this exa...

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Abstract

The present invention relates to a modular knee prosthesis assembly kit (10) for replacement of resected articular surfaces of a distal femur of a first patient side. The kit (10) comprises (a) at least one bi-condylar component (20) sized and shaped to substantially replace resected posterior and distal condylar bone portions; and (b) at least a first trochlear groove component (50) and a secondtrochlear groove component (70), each sized and shaped to replace a resected trochlear groove bone portion. The first trochlear groove component (50) comprises a first patella articulation path defining a first trochlear groove direction angle. The second trochlear groove component (70) comprises a second patella articulation path defining a second trochlear groove direction angle. An assembly ofthe bi-condylar component (20) and one of the first and second trochlear groove components (50; 70) forms a substantially complete femoral knee prosthesis. The second trochlear groove direction angleis different from the first trochlear groove direction angle.

Description

technical field [0001] The present invention relates to a fully modular knee prosthesis assembly kit and in particular to a kit useful for obtaining a knee prosthesis with replaceable and individual trochlear groove components. Background technique [0002] The femur and tibia can cause pain when the cartilage in the human knee wears down due to trauma, wear, or disease. This pain can be caused by parts of the bone in the joint that are not protected by cartilage, or by inflammation of soft tissue structures caused by instability. People with worn-out knees often undergo partial or total knee replacements to restore knee function and eliminate pain. [0003] The human knee joint consists of the distal femur, proximal tibia, and patella. The distal femur includes medial and lateral condyles that articulate against the tibial plateau and form the tibio-femoral joint. In addition, the distal femur includes a trochlear groove, located between and at least partially above the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/3859A61F2/3877A61F2002/30604A61F2310/00017A61F2310/00029A61F2310/00179
Inventor 斯蒂芬·埃格利亚诺士·哈伯利汤姆·欧沃若斯
Owner 斯蒂芬埃格利
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