Total knee arthroplasty preoperative planning method and device

Abstract

The embodiment of the invention provides a total knee arthroplasty preoperative planning method and device, and the method comprises the steps: obtaining a knee joint X-ray film image, and determining the real size of the knee joint X-ray film image; inputting the knee joint X-ray film image into a neural network identification model for identification, and determining key points and key axes; determining femur size parameters and tibia size parameters based on the key points and the key axes; determining types and models of a thighbone prosthesis and a tibia prosthesis based on the thighbone size parameter and the tibia size parameter; and based on the key axis, the type and the model of the femoral prosthesis and the type and the model of the tibia prosthesis, determining placement positions and placement angles corresponding to the femoral prosthesis and the tibia prosthesis. Therefore, according to the embodiment of the invention, the cost can be saved, the randomness of manual measurement is avoided, and an important reference function is provided for calculation of various parameters and placement of the prosthesis, so that the dependence on a surgeon is reduced.

Description

technical field [0001] The invention relates to the field of artificial intelligence medical technology, in particular to a preoperative planning method and device for total knee replacement. Background technique [0002] Total knee arthroplasty (Total Knee Arthroplasty, TKA) is an effective method for the treatment of severe knee osteoarthritis and other diseases, and is an essential item in the treatment of knee osteoarthritis. Accurate prosthesis matching is considered to be one of the important factors to reduce complications such as postoperative knee pain, prosthetic loosening, prosthetic wear, and postoperative bleeding, ensure good joint function, and improve postoperative satisfaction. Excessive prosthesis size may lead to poor contact between the prosthesis and the osteotomy surface, resulting in prosthesis loosening, too small a flexion gap, resulting in limited flexion, excessive pressure on the patellofemoral joint, and affecting the function of the knee extenso...

AI Technical Summary

Problems solved by technology

It can be seen that in traditional knee arthroplasty, the selection of lower extremity alignment, osteotomy amount, and prosthesis size still depends on the simple radiographs of the radiology department and the experience of the surgeon. may affect the outcome of surgery

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