Knee joint local prosthesis and personalized design method thereof

The invention relates to the technical field of artificial joints, in particular to a knee joint local prosthesis and a personalized design method thereof. According to CT scanning data of knee joints of multiple patients, prosthesis data models with multiple specifications and models and dense size intervals are obtained, and a real knee joint bone model database of the patients is established; comparing the target patient bone data with a data model of an established knee joint bone model database one by one, matching to obtain bone data with high similarity, and calling local intact bone data corresponding to the diseased region of the target patient; the covering prosthesis covers all the lesion bearing areas; and calculating the resection thickness of the femur resection, so that the thickness of the implanted knee joint local prosthesis is equal to the sum of the resection of the posterior femur and the normal femur cartilage. The problems that when an existing knee joint femoral condyle prosthesis is u