Preparation method for tumour prosthesis of upper middle tibia

Abstract

The invention provides a preparation method for a tumour prosthesis of an upper middle tibia. The method comprises the steps that firstly, a three-dimensional reconstruction technology is adopted to reconstruct uninjured and affected side tibias, according to the tumor position, an osteotomy range is determined, a tibia prosthesis body is obtained through mirroring based on the uninjured side tibia, side wing steel plates and intramedullary nails which are arranged at two sides of sclerotin are fixed to two ends of the tibia prosthesis body through the computer aided design, and an STL model is exported for 3D printing and subsequent treatment. The preparation method is simple and quick and makes up for deficiency of an existing clinical tumour prosthesis of the upper middle tibia, based on the preparation method, the prepared prosthesis reserves the articular surface, the designed bone block fixing steel plate position of the articular surface keeps away from pes anserinus and other parts covered by nervus nerve soft tissues, the fixing is safer and more reliable, a far-end intramedullary nail adopts the combination technology of sliding holes and static holes, and the nail placing position is obtained through the finite element analysis technology, so that the overall mechanics distribution is more uniform after prosthesis implantation, and the long-term stability is reinforced.

Description

technical field [0001] The invention relates to the technical field of research and development of auxiliary devices for bone joint function reconstruction after bone tumor resection, in particular to a method for preparing a tumor-type prosthesis in the middle and upper tibia. Background technique [0002] The proximal tibia is the second most common site for primary malignant bone tumors after the distal femur. The anatomical structure of the proximal tibia is special, and it is closely related to the tibial nerve, common peroneal nerve, and blood vessels of the calf. The soft tissue coverage is weak, and it needs to be treated at the same time. For the tibiofibular joint, after resection of the tibial tuberosity, it is necessary to rebuild the knee extensor device, damage the starting point of the calf muscle, etc. It is difficult to salvage the limb, the complications are high, and the function of the knee joint is poor after reconstruction. Therefore, the extensive rese...

AI Technical Summary

Problems solved by technology

[0004] However, the quality of artificial joints currently used clinically is still inferior to that of physiological joints, and artificial prostheses still have deficiencies such as prosthetic infection, prosthetic loosening, and so on.

Clinically, joint-preserving tumor-type prostheses are scarce, and the basic principle of limb-salvage surgery for bone tumors in the upper tibia is to restore the function of the knee joint to a large extent while resecting the tumor extensively. Standardized prostheses cannot meet the needs of personalized and precise treatment. Demand, the design process of individualized prosthesis is complicated, time and cost are high

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