Sacrum and pubis bilateral osseointegration semi-pelvic prosthesis

Abstract

The invention relates to a sacrum and pubis bilateral osseointegration semi-pelvic prosthesis which comprises a sacrum side component, a pubis side component and an acetabulum component connecting the sacrum side component and the pubis side component, and the sacrum side component, the pubis side component and the acetabulum component are of an integrated structure. A pubis screw hole, a sacrum transverse screw hole and a sacrum dorsal side screw hole are formed in a pubis joint face, a sacrum ear-shaped face section and a sacrum back face respectively, a pubis screw is implanted into the opposite side pubis through the pubis screw hole, and a sacrum transverse locking micropore screw is transversely implanted into the sacrum in a first sacrum vertebral body and a second sacrum vertebral body through the sacrum transverse screw hole. A sacrum dorsal screw is horizontally implanted into the sacrum from the dorsal side to the ventral side above the sacrum wing through the sacrum dorsal screw hole and the first sacral hole and the second sacral hole; a plurality of soft tissue attachment points are arranged on the sacrum side component and the pubis side component. The pubic symphysis is formed by utilizing the pubic lateral component, a complete pelvic ring structure is formed, shear stress can be effectively resisted, and stability and patient prognosis are good.

Description

technical field [0001] The invention relates to the technical field of artificial hemi-pelvic prosthesis, in particular to a hemi-pelvic prosthesis with bilateral sacral-pubic osseointegration. Background technique [0002] The pelvis is where bone tumors are most likely to occur. Due to the complex anatomical structure of the pelvis, it is a huge challenge for bone oncologists to reconstruct the function of the hemipelvis after pelvic tumor resection. At present, the tumor resection and reconstruction of pelvic tumors are mainly classified according to the Enneking classification, which can be divided into three types according to the anatomy: Type I: resection of the iliac crest; Type II: resection around the acetabulum; Type III: resection of the ischia and pubis; Type IV: resection of the pubic bone. The extent of resection involved the sacrum. For Enneking I+II+III zone pelvic malignant tumors. The task of reconstructing the hemipelvic prosthesis is particularly diffi...

AI Technical Summary

Problems solved by technology

[0004] The pelvic prosthesis in the prior art does not consider the complete pelvic ring structure and the biological fixation of the pubic bone, and cannot achieve long-term fixation through osseointegration. At the same time, in order to ensure extensive tumor resection and increase the postoperative long-term Stability, the present invention provides a sacral-pubic bilateral osseointegrated hemi-pelvic prosthesis with high stability and composite biomechanical design, the hemi-pelvic prosthesis is passed through multiple biological mechanisms of sacrum, pubic symphysis, and sacral locking microporous screws Fixed, can achieve osseointegration to achieve long-term stability of the prosthesis

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