Distal radius personalized artificial prosthesis

Abstract

The invention provides a distal radius personalized artificial prosthesis. The distal radius personalized artificial prosthesis comprises a core column composed of a core column solid part and a corecolumn porous part, wherein the core column solid part comprises a core column solid part far end, a core column solid part collar part and a core column solid part intramedullary nail; the hollow conical core column porous part is arranged at the outer side of the core column solid part intramedullary nail and wrapped by remaining radius; and an outer sleeve with a same geometrical shape as cut-off radius is arranged at the outer side of the core column solid part far end. By adoption of a combined structural design, the outer sleeve and the cut-off radius are the same in geometrical shape; good contact between the outer sleeve and bone joint surface is guaranteed; stress shielding and bone abrasion are relieved; and the probability of postoperative fracture is reduced.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a personalized artificial prosthesis at the distal end of the radius. Background technique [0002] The distal radius is a common tumor site, and the purpose of surgical treatment is to remove the tumor, effectively reduce local recurrence, and preserve wrist function to the greatest extent. Clinically, in order to preserve a certain function of the wrist joint, resection of the tumor segment, autologous bone or allogeneic half-joint replacement and other treatment methods are commonly used, but there are many complications and the long-term effect is not good. Several commonly used methods for surgical reconstruction of distal radius bone defects are introduced below: [0003] Autologous bone transplantation often adopts fibular head half-joint graft with or without blood vessels to repair the bone defect in the distal radius. The advantage is that the shape of the fibular head i...

AI Technical Summary

Problems solved by technology

At present, the materials used for artificial prosthesis include titanium alloy prosthesis, cobalt-chromium-molybdenum alloy, ultra-high molecular polyethylene, etc., but due to the high elastic modulus of titanium alloy materials, bone resorption, wear and tear caused by the impact of movement on polymer materials, Defects in the design of the prosthesis itself, etc., the application of a single material often leads to long-term complications such as prosthesis loosening, subsidence, dislocation, and periprosthetic fractures

Images