Distal femur customized osteotomy guide plate used for knee replacement surgery and implementation method

Abstract

The invention relates to a distal femur customized osteotomy guide plate used for knee replacement surgery and an implementation method. The osteotomy guide plate comprises a No.1 osteotomy guide plate unit and a No.2 osteotomy guide plate unit, the No.1 osteotomy guide plate unit comprises a first bottom bone surface composite positioning structure, a second bottom bone surface composite positioning structure, an inner side bone surface positioning structure, an outer side bone surface positioning structure, a No.1 positioning nail through hole, a distal femur plane bone cutting groove and a distal femur front condyle surface bone cutting groove, and the No.2 osteotomy guide plate unit comprises a front condyle surface positioning structure, a No.2 positioning nail through hole, a distal femur plane positioning structure, a front condyle inclined plane bone cutting groove, a rear condyle inclined plane bone cutting groove and a rear condyle surface cutting groove. The No.1 osteotomy guide plate unit is positioned in a manner of applying the positioning structure to the distal femur surface, the No.2 osteotomy guide plate unit s positioned through the position of the positioning nail after the No.1 osteotomy guide plate unit is used and a plane obtained after the front condyle surface is subjected to osteotomy, and by using the No.1 osteotomy guide plate unit and the No.2 osteotomy guide plate unit cooperatively, the positioning and osteotomy accuracy can be effectively improved.

Description

technical field [0001] The invention relates to an osteotomy guide plate for surgery, in particular to a personalized distal femoral osteotomy guide plate for knee joint replacement surgery and a realization method. Background technique [0002] With the aging of the population and the increase in sports injuries, the incidence of knee osteoarthritis is increasing. For end-stage osteoarthritis, the current clinically effective treatment is knee arthroplasty. [0003] Due to individual differences, more than 130 surgical instruments are used in traditional surgery, such as mechanical guides for intramedullary and extramedullary positioning, bone cutting plate guides, etc. Even so, in the operation, the surgeon still needs to rely on the naked eye, feel and experience to perform anatomical positioning, and to perform alignment and alignment through manual marking, flexion and extension of the knee joint, etc., which itself has a lot of subjectivity. Larger errors are more dif...

AI Technical Summary

Problems solved by technology

Many domestic scholars have applied digital reconstruction and 3D printing technology to the field of orthopedics, but there is still a lack of effective devices for multi-angle osteotomy after plane osteotomy of the distal femur

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