Osteotomy orthopaedic guide assembly on ankle

Abstract

The invention provides an osteotomy orthopaedic guide assembly on an ankle. The assembly is arranged on a distal end of a tibia of a patient, to perform osteotomy and correction. The assembly includesa cutting guide that matches the patient's tibia, a locating block detachably snap to that cutting guide plate and a locking member for fastening the cutting guide plate and the locating block, The cutting guide plate is provided with a cutting groove and a bonding surface, the bonding surface is bonded with the surface of the corresponding position of the distal end of the tibia, the cutting guide plate comprises a plurality of positioning plates detachably arranged between each other, the locking member is sleeved on the plurality of positioning plates of the cutting guide plate, and the cutting guide plate is also provided with a through hole. The invention defines the angle and position of the distraction after osteotomy by a positioning block, improves the accuracy of the operation,reduces the difficulty of the operation and the dependence on the experience of the doctor, and avoids frequent X-ray fluoroscopy measurement during the operation. By setting the cutting guide plate as a detachable structure, the smooth disassembly of the cutting guide plate is facilitated, and the locking of the distraction position and the accuracy of the operation are ensured.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a supra-ankle osteotomy orthopedic guiding assembly. Background technique [0002] The complex deformity of lower extremity bones caused by trauma or failed previous operations has been a major problem that has plagued surgeons for a long time. If left untreated, such deformities will alter the physiologic kinematics and cause mechanical instability, which in turn increases the risk of persistent pain, loss of function, and even osteoarthritis. As the largest weight-bearing joint in the human body, the ankle joint consists of the tibiotalar joint and the lateral malleolus joint. Ankle osteoarthritis (osteoarthritis, OA) is a progressive disease, mainly manifested as degeneration of articular cartilage, and often accompanied by ankle varus / valgus deformity. There is a consensus that joint fusion or arthroplasty is required for end-stage patients, but for mid-stage patients whose a...

AI Technical Summary

Problems solved by technology

Doctors usually use two-dimensional X-rays and CT images for preoperative diagnosis and plan planning. However, for multi-plane complex deformities, two-dimensional planning cannot obtain accurate

Images