Femoral condyle horizontal osteotomy system and use method thereof

Abstract

The invention discloses a femoral condyle horizontal osteotomy system which comprises a positioning module, an osteotomy navigation module and a positioning frame. Wherein the positioning module comprises a bone surface fitting part and a nail group guide mechanism, the bone surface fitting part is obtained through reverse design according to the surface shape of a femoral condyle of a patient, and the nail group guide mechanism is arranged on the bone surface fitting part and used for guiding a first positioning nail group to be placed into a bone; the bone cutting navigation module is connected with the positioning frame, the bone cutting navigation module and the positioning frame penetrate through the first positioning nail set, and the bone cutting navigation module comprises a navigation body, a bone cutting groove and a guide hole, according to the invention, the advantages of high positioning precision and good adaptability of a customized surgical instrument are reserved, and the advantages of convenient bone cutting, wide application range and high reliability of a standard instrument are also reserved; the function and the structure of the customized surgical instrument are simplified, the design workload is reduced, and the manufacturing cost is reduced; and the injury of the operation to the bone of the patient is reduced.

Description

technical field [0001] The invention belongs to the technical field of an osteotomy system for knee joint replacement surgery, and in particular relates to a partially customized femoral condyle horizontal osteotomy system and an application method thereof. Background technique [0002] The horizontal osteotomy of the femoral condyle is a decisive step in total knee arthroplasty. Usually, in knee replacement surgery, the horizontal osteotomy surface of the femoral condyle is the reference plane for the subsequent osteotomy process and is also an important support surface for the installation of the prosthesis. The accuracy of the horizontal osteotomy surface directly affects the accuracy of the postoperative lower limb force line. Therefore, almost all commercialized total knee replacements use very complicated procedures to ensure the accuracy of the bone cutting step. [0003] The existing technical solutions can be roughly divided into two types: one is to use standardiz...

AI Technical Summary

Problems solved by technology

This kind of customized osteotomy guide plate is usually disposable and disposable, and because it is a customized instrument, it will inevitably produce a lot of repetitive design work, and the cost of manpower and time is high

In addition, there is still a certain gap between additive manufacturing technology and traditional technology in terms of manufacturing accuracy. Multiple surgical steps can be realized on a single osteotomy guide plate, which is likely to cause continuous accumulation of errors and affect the surgical effect.

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