Method for manufacturing navigation template for knee replacement, and navigation template

Abstract

The invention relates to a method for manufacturing a navigation template for knee replacement. The method comprises the following steps of: scanning a hip joint, a knee joint and an ankle joint through computed tomography (CT) to obtain CT data, and establishing three-dimensional reconstruction models of femur and tibia according to the CT data; respectively carrying out combination on the three-dimensional reconstruction models of thigh bone and shin bone with a three-dimensional structure, and respectively removing the three-dimensional structure models of femur and tibia from the three-dimensional structure; according to the knee replacement process, carrying out distal femoral virtual osteotomy on the three-dimensional structure model containing the femur contour, and carrying out proximal tibia virtual osteotomy on the three-dimensional structure model containing the tibia contour; and establishing virtual femur condyle navigation template and a virtual tibia platform navigation template, and manufacturing an entity condyle navigation template and an entity tibia platform navigation template. The individual navigation template manufactured by the invention be used for carrying out positioning of osteotomy and a rotating axis on the affected knee femur condyle and tibia platform, thus realizing individual precise osteotomy.

Description

technical field [0001] The invention relates to the field of manufacturing methods of navigation templates for surgery, in particular to a method for manufacturing a navigation template for knee joint replacement and the navigation template. Background technique [0002] With the aging of society, osteoarthritis (OA) has become the most common bone and joint disease in all human beings. According to the latest statistics from the World Health Organization, the number of osteoarthritis caused by various reasons in humans is doubling year by year. The trend is that artificial joint replacement is often the outcome, which can solve the patient's pain and improve the quality of life, but the premise is that the precise osteotomy and prosthesis alignment and alignment can achieve the biomechanical reproduction after knee replacement. . [0003] As one of the major joint replacements, total knee arthroplasty (TKA) is a mature operation. The success or failure of total knee arthro...

AI Technical Summary

Problems solved by technology

Therefore, the navigation system itself does not solve the problems of anatomical reconstruction of the biomechanical axis of the lower limbs and the axis of rotation of the prosthesis.

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