Foot-ankle fixator for osteotomy around knee joint

Abstract

The invention discloses a foot-ankle fixator for osteotomy around knee joint, comprising a base and a fixator, wherein, a height adjusting assembly is arranged on the base, a universal ball is arranged on the top of the height adjusting assembly and a pressing bolt for tightening or loosening the universal ball, a connecting rod is fixed on the universal ball, and the bottom of the fixator is fixedly connected with the connecting rod. A fixture includes a fixture base plate, one end of the fixture bottom plate is provided with a heel support plate, A first fixing plate and a second fixing plate are spaced apart on both sides of the top of the fixture bottom plate, Between that two side of the first fixing plate and between the two sides of the second fixing plate are connected powerful line adjusting crossbars, a plurality of grooves are distribute on the force line adjusting crossbars at intervals, a plurality of protrusions are arranged on both sides of the bottom of the fixer bottomplate, and two protrusions adjacent to each other form bandage winding grooves. The invention can not only ensure the accuracy of the target force line measurement of the affected limb in the osteotomy around the knee joint, but also enable the operator to avoid the harm of radiation exposure, save the human resources and have high practicability.

Description

technical field [0001] The invention relates to the technical field of medical instruments for orthopedic surgery, in particular to an ankle fixator for osteotomy around the knee joint. Background technique [0002] Peripheral knee osteotomy is an osteotomy that corrects deformity by improving the load-bearing axis of the knee joint, ensures stability of the knee joint, and relieves the patient's pain. On the one hand, X-ray fluoroscopy to confirm the adjusted target line of force of the affected limb is one of the key steps in osteotomy around the knee joint. Usually, a straight metal rod is used to measure the line of force of the affected limb. In order to ensure the accuracy of force line measurement, During the measurement process, the surgeon needs to maintain the ankle joint of the affected limb in the neutral position of rotation and give appropriate longitudinal stress. In addition, the surgeon also needs to keep the straight metal rod placed stably, which makes the...

AI Technical Summary

Problems solved by technology

On the one hand, X-ray fluoroscopy to confirm the adjusted target line of force of the affected limb is one of the key steps in osteotomy around the knee joint. Usually, a straight metal rod is used to measure the line of force of the affected limb. In order to ensure the accuracy of force line measurement, During the measurement process, the surgeon needs to maintain the ankle joint of the affected limb in the neutral position of rotation and give appropriate longitudinal stress. In addition, the surgeon also needs to keep the straight metal rod placed stably, which makes the surgeon have to be exposed to radiation, greatly Increased hazards of radiation exposure for surgical personnel

On the other hand, during osteotomy, an "L"-shaped rod (or rolled into a cylinder with a surgical towel) and a baffle are usually used in combination to maintain the knee joint of the affected limb in a slightly flexed position to facilitate the operation, but the fixation effect is often unsatisfactory. Unsatisfactory, it often requires the operator to stabilize the affected limb with his hands, resulting in a waste of human resources for the operator

At present, there is no fixation device for maintaining the position of the ankle joint of the affected limb and maintaining the stability of the straight metal rod during osteotomy around the knee joint

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