Calcaneus sustentaculum tali screw guider

Abstract

The invention relates to a calcaneus sustentaculum tali screw guider which is characterized by comprising a positioning plate, wherein the thickness of the positioning plate is greater than or equal to 7mm; the included angle between the first side edge and the second side edge, which are adjacent to each other, of the positioning plate is 120-140 degrees; through guide holes are formed in the positioning plate; the distance between each guide hole and the second side edge is 15-25mm; the axis of each guide hole is upwards inclined by 23-27 degrees relative to a horizontal plane and is forwards inclined by 28-32 degrees relative to a perpendicular surface. According to the calcaneus sustentaculum tali screw guider, the problems that the screw positioning has to depend on multiple X-ray perspective data as well as the experience and the skill of a surgeon in the prior art are solved. The guider disclosed by the invention is set according to dissection data such as projections on the outer side wall of the sustentaculum tali and is accurate; therefore, harms to a human body during perception are reduced, and manmade iatrogenic complications caused by deviation of a screw position on the sustentaculum tali are reduced; the guider is convenient to use and suitable for wide use and popularization in all levels of hospitals.

Description

technical field [0001] The invention relates to a medical device, in particular to a calcaneal-loaded talus screw guide. Background technique [0002] Calcaneal fracture is a common tarsal fracture, and its incidence accounts for 2% of systemic fractures, accounting for 60% to 65% of all tarsal fractures. Improper management of calcaneal fractures can cause foot pain and deformity, which can seriously affect limb function. Because the cortical bone of the calcaneus is relatively thin and the cancellous bone is relatively abundant, the vertical pressure of the talus often causes the calcaneus to collapse and compress when a fracture occurs, especially the posterior articular surface often presents a comminuted fracture. The most important factor affecting the prognosis of the affected foot in calcaneal fractures is the integrity and displacement of the posterior articular surface. Therefore, the reduction and stable fixation of the fracture fragments of the posterior articu...

AI Technical Summary

Problems solved by technology

[0005] The use of this guide can improve the positioning accuracy of the load distance protruding screw to a certain extent, but its structure is complicated and the adjustment is cumbersome. The positioning point of the protrusion screw and the rotation angle of the screw guide tube are still the same as in the prior art, and it needs the experience of the surgeon

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