Stepped steel plate of heel bone

Abstract

Provided is a stepped steel plate of a heel bone, relating to intraosseous fixation. The stepped steel plate comprises a backboard 1. The middle part of the backboard is provided with a stepped bend 2. The stepped bend 2 is divided into upper and lower regions by the backboard 1. The height difference between the upper and lower regions ranges from 5 to 10 mm. Four corners of the backboard 1 are provided with foot nails 4. Pointed ends of the foot nails 4 are located on the same plane. Two foot nails 4 in the upper region of the backboard 1 are mutually parallel. The dip angles downwardly tilt. Two foot nails 4 in the lower region of the backboard 1 are mutually parallel. The dip angles upwardly tilt. Arc bending areas 3 are arranged between the backboard 1 and the foot nails 4.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to a calcaneal stepped steel plate used for bone internal fixation, especially suitable for human calcaneus fixation. Background technique [0002] In general, the angle between the long axis of the tibia and the long axis of the calcaneus is 0-15°. When the angle between the long axis of the tibia and the long axis of the calcaneus is greater than 20° or the angle is negative, surgical intervention is required. , Common diseases of the calcaneal step plate: high arched feet, flat feet, congenital hypoplasia and fracture healing deformities of the calcaneus. The usual practice of surgery: 1. Cut off the calcaneus at the required position to cause an artificial fracture; 2. Adjust the two cut sections to the desired position and then fix them. [0003] In the prior art, bone nails and bone plates are mostly used in surgical treatment of the above-mentioned disease...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, bone nails and bone plates are mostly used in the surgical treatment of the above diseases. The disadvantages in the process of use are: the screwing angle cannot be accurately controlled during the screwing process of the bone screw, and osteoporosis is prone to occur; When actually walking, it is prone to loosening and falling off; there are not enough screws on the top and bottom of the calcaneus, and the main load-bearing area is under the calcaneal joint. With the existing screw and internal fixation plate design, there is often only one screw space here; many screws are placed In the area where the bone density is low, problems such as screw pulling are prone to occur; the shape design of the load-bearing wall of the internal fixation plate is unreasonable, and the direction of gravity conduction does not match the direction of bone trabecular extension

The above defects lead to early weight bearing after calcaneal surgery

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