Artificial ankle joint talus component

Abstract

The present invention relates to an artificial ankle joint talus component and, more specifically, to an artificial ankle joint talus component comprising: a joint surface coming in contact with an insert; and a contact surface coming in contact with the bone, wherein the contact surface is formed in a shape complementary to the cross section of the talus, thereby repairing the entire cross section and thus distributing stress, and reducing side effects such as osteolysis or heterotopic ossification after the surgery.

Description

Technical field [0001] The present invention relates to an artificial ankle joint talus element, in particular to an articular surface that is connected to an insert and a contact surface that is connected to the bone. The contact surface is formed in a shape that complements the tangent surface of the talus, so that it can be aligned All cut surfaces are repaired and the stress is dispersed, and it can also reduce the postoperative osteolysis or heterotopic ossification and other side effects of the artificial ankle talus element. Background technique [0002] When the ankle joint cannot function normally due to various reasons such as degenerative arthritis of the ankle and post-traumatic arthritis, a replacement surgery using an artificial ankle joint will be performed. The artificial ankle replacement surgery that began in the 1970s showed many side effects in the early stage, and its clinical results were far from people's expectations. Moreover, because of the high complexi...

AI Technical Summary

Problems solved by technology

During surgery through a small incision site as described above, it is even difficult to hit exactly the right place when applying the impact force

Especially when the plug B is located in the front, it is necessary to apply force from the side when performing the impact, and in this case, the possibility of errors due to the inconvenient posture of the operator will further increase

[0018] As mentioned above, when the point of application of the force is deviated, the phenomenon that the rear part is lifted from the talus is caused, and this phenomenon becomes more serious when the plug B is located in the front C

In addition, while implants are usually made of solid metal, they are not rigid bodies, so even when force is applied correctly there is a small amount of deformation due to the force being concentrated in the front, which further leads to posterior Partial inability to securely seat on the talus

As mentioned above, because the plug B is located on the anterior side with a long distance from the posterior part, it will not be possible to ensure a firm combination of the talus and the implant when the contact on the posterior side is incomplete, and even after surgery because of the human body The load causes the rear part to sink and touch, still causing the problem of not being able to be seated exactly in the correct position

[0019] Since the above-mentioned phenomenon often occurs during the actual operation, it is necessary to use an image intensifier (image intensifier) ​​for real-time confirmation, which in turn leads to an increase in the risk of radiation exposure and infection for the operator

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