Ilium fixing piece with self-locking nail hole and supporting platform and for semi-pelvic prosthesis

Abstract

The invention relates to an ilium fixing piece with a self-locking nail hole and a supporting platform and for a semi-pelvic prosthesis and belongs to the technical field of artificial semi-pelvic prostheses. The ilium fixing piece is characterized in that a self-locking nail through hole is laterally formed at the upper end of the semi-pelvic prosthesis and is fixedly connected with the residual ilium self-locking nail; an inner cone and a bayonet are formed at the lower end of the semi-pelvic prosthesis and are connected with an upper outer cone and an anti-rotation clamping groove of an acetabulum prosthesis in a matched manner; and a platform facing upwards and used for supporting the residual ilium is arranged between the inner cone and the bayonet. The ilium fixing piece has the beneficial effects that the ilium fixing piece is fixedly connected with the residual ilium through the self-locking nail, so the problem that the common screw is easy to loosen is solved; and the platform for supporting the residual ilium is arranged on the ilium fixing piece and the shear force or the tensile stress of the prosthesis and the residual ilium is converted into pressure stress, so the prosthesis is prevented from loosening. The ilium fixing piece has high stability, is difficult to loosen and meets the requirements on the semi-pelvic and hip joint structure and functional reconstruction after the semi-pelvic tumor is resected and part of the ilium is remained.

Description

technical field [0001] The invention belongs to the technical field of artificial hemipelvic prosthesis, and relates to an ilium fixation piece with self-locking nail holes and a support platform for a hemipelvic prosthesis, and performs pelvic ring after resection of a part of the ilium reserved hemipelvic tumor Reconstruct and realize the structural and functional reconstruction of the half pelvis and hip joint. Background technique [0002] Pelvic tumors are relatively common, accounting for about 3%-4% of primary bone tumors. Because pelvic tumors often involve the acetabulum and have a huge scope, the operation requires complete resection of the tumor and at the same time, the hemipelvis is usually amputated. Big blow. At present, in the treatment of pelvic tumors, we are committed to comprehensive treatment of limb salvage, simply resecting the half pelvis with tumors to preserve the patient's limbs, and the reconstruction of the pelvic ring has become the key to res...

AI Technical Summary

Problems solved by technology

[0003] At present, artificial hemipelvic prosthesis is mostly used in the reconstruction of pelvic ring. When the tumor invades the sacrum and acetabulum, a small amount of sacrum, all ilium, acetabulum, part of pubic bone or all pubic bone are removed at the same time. The pelvic prosthesis has problems such as poor clinical stability, easy rotation, and loosening. Therefore, an artificial half-pelvic prosthesis with good stability and not easy to loosen is needed to meet clinical needs.

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