Auxiliary tool for inner side high tibial osteotomy

Abstract

The invention discloses an auxiliary tool for inner side high tibial osteotomy. The auxiliary tool comprises an osteotomy guiding template comprising a main body with a fitting curved surface fitting with a curved surface in an area under the inner side of a tibial platform; a lower-side wedge-shaped tibial osteotomy guiding structure and a lower-side tibial tubercle osteotomy guiding structure are arranged on opposite surfaces of the fitting curved surfaces, a first positioning clay contacting the highest bump point of the tibial tubercle is arranged on one side of the main body, and a second positioning claw and a third positioning claw contacting the inner side of the tibial platform are arranged at the upper part of the main body. The special osteotomy guiding template provided by the invention accordant with patient condition is designed in an individualized manner and customized, and by using the special osteotomy guiding template, a doctor can rapidly perform an operation, operation time can be reduced, positioning can be accurate and convenient in the operation, osteotomy accuracy can be furthest improved, the number of fluoroscopy in the operation can be reduced, and thus an achievement ratio of operation is improved, and an infection rate in operation and a recurrence rate are reduced.

Description

technical field [0001] The invention relates to the field of medical auxiliary equipment, in particular to an auxiliary tool for high tibial medial osteotomy. Background technique [0002] Medial open wedge high tibial osteotomy (HTO) is used to treat medial knee osteoarthritis and other diseases caused by tibial varus deformity. High wedge osteotomy on the medial tibia can correct the force line of the lower limbs, which can delay joint degeneration and achieve preservation. purpose of the knee. [0003] In the medial open wedge HTO, the osteotomy is carried out along line A (the wedge-shaped osteotomy line below the tibia) and line B (the osteotomy line below the tibial tuberosity), where the starting point of line A is 35-40 mm below the medial tibial platform to the fibula The tip of the head; the angle between line B and line A in the sagittal plane of the human body is about 110°; the intersection point of line A and line B is 10-20mm away from the front cortical bone...

AI Technical Summary

Problems solved by technology

In the traditional medial open wedge HTO, doctors rely on clinical practice experience and existing measurement tools to perform osteotomy operations, resulting in deviations in the accuracy of osteotomy due to different operators, and measuring while performing surgery will result in longer operation time, and Frequent X-ray fluoroscopy measurements during surgery increase the X-ray exposure of patients and operators

Images