A nodule reduction component for a semi-shoulder replacement prosthesis and a preparation method thereof

Abstract

The invention provides a preparation method of a nodule reduction component for a semi-shoulder replacement prosthesis, which comprises the following steps: S1, reconstructing a proximal humerus three-dimensional model, and performing virtual reduction on a fracture block; s2, setting an osteotomy plane along the anatomical neck of the humerus head, the angle between the osteotomy plane and the humerus shaft being 45 degrees, translating the osteotomy plane from the anatomical neck to the far end by 3-5 mm to obtain a research osteotomy face, and drawing the outline of the nodule reduction assembly in an individualized mode according to the research osteotomy face; and S3, determining the position of a prefabricated line hole on the outline of the nodule reset assembly drawn in the step S2, and then printing and forming according to the morphological structure of the prefabricated line hole to obtain the nodule reset assembly. The invention has the advantages that the nodule reduction component prepared by the method has certain elasticity and can generate a tension band effect, a dynamic pressurization effect is formed between fracture blocks, the nodule healing capability is enhanced, and the postoperative shoulder joint function is improved; large and small nodules can be dissected and reset through the suture holes.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a nodule reduction assembly for a hemishoulder replacement prosthesis and a preparation method thereof. Background technique [0002] In the conventional hemishoulder joint replacement operation, after the prosthesis is installed, the fracture fragments of the tuberosity and tuberosity are reduced by traction with sutures, and then the tuberosity and tuberosity are bound circularly on the prosthesis stem. Partial shoulder hemiprostheses have wings, and the tuberosities and tuberosities can be cerclaged to the thread holes in the wings. However, this method cannot achieve anatomical reduction and fixation of large and small nodules. [0003] In recent years, most studies have reported that artificial hemiarthroplasty for the treatment of proximal humeral fractures has unsatisfactory recovery of shoulder joint mobility and function. Since the large and small nodules are o...

AI Technical Summary

Problems solved by technology

Reverse total shoulder arthroplasty can improve the average functional level after shoulder joint surgery, but it needs to install the prosthesis on the normal shoulder glenoid side, and it is difficult to revise once it fails

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