Caput femoris surface replacement prosthesis

Abstract

The invention discloses a caput femoris surface replacement prosthesis. The caput femoris surface replacement prosthesis comprises a joint part and a collum femoris insertosome, wherein one end, awayfrom the collum femoris insertosome, of the joint part is a spherical surface, attachment structural layers capable of being embedded into a human body are arranged at one end, close to the collum femoris insertosome, of the joint part and the collum femoris insertosome, and a fixing unit is also arranged on the collum femoris insertosome. According to the caput femoris surface replacement prosthesis, a spherical surface structure at the joint part can replace a caput femoris surface joint of a human body, the collum femoris insertosome can be inserted into medullary space of collum femoris, the attachment structural layers are arranged on one side of the joint part and on the surface of the collum femoris insertosome and used for biological fixation, bone ingrowth is facilitated, and final embedment of the prosthesis and bone of the human body is realized; and besides, the fixing unit is arranged on the collum femoris insertosome and can prevent the prosthesis from rotating or retreating, the position correctness and stability of the prosthesis are effectively guaranteed, and the service life of the prosthesis is prolonged.

Description

technical field [0001] The invention relates to the technical field of joint prosthesis implantation, in particular to a femoral head surface replacement prosthesis. Background technique [0002] From the perspective of the clinical effect of joint prosthesis implantation, ensuring the normal blood supply of human bone tissue and realizing the bone ingrowth of bone tissue on the surface of the prosthesis is the key factor for the long-term stability and long-term service life of the prosthesis. [0003] The Chinese patent application with publication number CN110393611A discloses a surface hip joint prosthesis, which discloses a femoral head prosthesis, which includes a femoral head for socketing on the outer surface of the femoral head of the human body and the fixing part connected with the femoral head and used for implanting in the femoral head of the human body, the first anti-rotation groove and / or the fixing part are formed on the inner surface of the femoral head mat...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the hip joint surface replacement prosthesis in the prior art is generally fixed with bone cement, resulting in large loss of bone mass, failure to achieve bone ingrowth, high risk of long-term loosening, and high possibility of prosthesis failure

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