Tibial prosthesis

Abstract

The invention relates to the technical field of medical prostheses, in particular to a tibial prosthesis which is characterized by comprising a near-end prosthesis, an attaching plate arranged on the end face of the near-end prosthesis and a fixing plate arranged on one side of the attaching plate, first fixing screws are arranged on the outer surface of the fixing plate, and the attaching plate is obliquely arranged relative to the axis of the near-end prosthesis; when the tibial prosthesis is replaced, firstly, a diseased tibia is cut off, secondly, the attaching plate is attached to the end face of a reserved bone, and the first fixing screw is screwed into the reserved bone through the fixing plate, so that the proximal prosthesis is connected with the reserved bone; due to the fact that the attaching plate is obliquely arranged, two kinds of pressing force perpendicular to each other can be generated between the end face, close to the reserved bone, of the attaching plate and the end face, close to the attaching plate, of the reserved bone, and compared with pure axial force, the two kinds of pressing force in different directions can further enable the attaching plate to generate more calcium deposits; the construction speed of the tissue-engineered bone substitute is further improved, so that bone ingrowth is further promoted.

Description

technical field [0001] The present application relates to the technical field of medical prosthesis, in particular to a tibial prosthesis. Background technique [0002] The tibia, as an important load-bearing bone in the human body, is the main component of the lower limbs. As important components of the ankle-hindfoot complex, the tibiotalar joint and subtalar joint are responsible for maintaining the weight-bearing walking of the lower limbs and maintaining normal ankle mobility. [0003] When tumors or other lesions occur in the tibia of the human body, it is usually necessary to surgically resect the diseased bone on the tibia, and then use the tibial prosthesis to replace the resected diseased bone; The proximal prosthesis near the end face of the retained bone is integrally formed with a fitting plate that fits the end face of the retained bone. The fitting plate is set horizontally, and the material of the fitting plate is bone-like trabecular porous structure, titan...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technical solutions, the inventors found that although the laminated plate adopts a porous structure imitating bone trabecula, sprayed titanium / tantalum coating, hydroxyapatite coating, etc., the laminated plate and the retained bone are only in horizontal contact. In the process of bone healing or interface integration, the fitting plate and the retained bone will still have problems of healing failure and bone ingrowth difficulties due to the small displacement of each other during the process of bone healing or interface integration, which will greatly prolong the postoperative recovery time

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