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Customized radius head prosthesis based on three-dimensional anatomy of proximal radius on uninjured side

A radial head and radial bone technology, applied in the field of radial head prosthesis customization, can solve the problems of cartilage layer wear, aggravated complications, poor matching degree of prosthesis, etc., and achieve the effect of not easy to fall off, less pain, and improved service life

Active Publication Date: 2021-07-09
南通市海门区人民医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason for these complications is that the matching of the prosthesis is not satisfactory, and after the radial head prosthesis is implanted in the body for a long time, it is easy to cause the wear of the cartilage layer, resulting in poor matching of the prosthesis and aggravation of complications

Method used

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  • Customized radius head prosthesis based on three-dimensional anatomy of proximal radius on uninjured side
  • Customized radius head prosthesis based on three-dimensional anatomy of proximal radius on uninjured side
  • Customized radius head prosthesis based on three-dimensional anatomy of proximal radius on uninjured side

Examples

Experimental program
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Effect test

Embodiment 1

[0052] see Figure 1-2 The radial head prosthesis is customized based on the three-dimensional anatomy of the proximal radius on the uninjured side, including the radial head, prosthetic stem and collar. The upper end of the prosthesis stem is connected to the lower end of the radial head. The ring is in contact with the lower end of the radial head.

[0053] see image 3 , the radial head includes the inner radial head layer 11, the outer multi-perforated radial layer 12 connected outside the inner radial head layer 11 and the outer cartilage layer 13 wrapped outside the outer multi-perforated radial layer 12, and the inner radius The inner cartilage layer 14 is arranged between the capitulum 11, the thickness of the outer multi-porous radial layer 12 is no more than 2mm, the thickness of the outer cartilage layer 13 is not more than 1mm, the inner radial capitellum 11 and the outer multi-porous radial layer 12 Print the required three-dimensional data, cut the three-dimens...

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Abstract

The invention discloses a customized radial head prosthesis based on three-dimensional anatomy of the proximal radius of the uninjured side, and belongs to the field of radial head prosthesis customization. According to the customized radial head prosthesis based on three-dimensional anatomy of the proximal radius of the uninjured side, the radial head prosthesis is customized, so that the prosthesis is excellent in matching and excellent in biomechanical property, and osteoporosis and articular cartilage surface damage of the small head of humerus can be effectively avoided. In addition, in the multi-time printing process, a cartilage supporting layer can be formed in an outer cartilage layer in the prior art, so that the supporting strength of the cartilage layer is high, the situation that in the prior art, after cartilage on a prosthesis is locally abraded, the prosthesis is loosened is effectively avoided. Meanwhile, after the local part of the outer cartilage layer is abraded, cartilage growth liquid in the radius layer of the outer multi-through hole seeps out along the abraded part, cartilage cells are effectively guided to grow at the abraded part, and then the self-repairing effect of the abraded cartilage part is achieved. Compared with the prior art, the adaptability of the prosthesis and a patient is effectively guaranteed, and the service life of the prosthesis in the body of the patient is prolonged.

Description

technical field [0001] The invention relates to the field of radial head prosthesis customization, and more specifically, relates to the customization of radial head prosthesis based on the three-dimensional anatomy of the proximal end of the healthy side of the radius. Background technique [0002] Radial head prosthesis replacement is commonly used to treat patients with comminuted radial head fractures who cannot structurally restore elbow stability. The complexity of the movement of the forearm and elbow joints determines that radial head prosthesis replacement must achieve an accurate match between the prosthesis and the affected elbow. [0003] The elbow joint is one of the complex joints in the human body, and the humeroradial joint, humerulnar joint and radioulnar joint cooperate to complete the elbow joint activities. Studies have shown that most of the concave surface of the radial head is elliptical, and the annular articular surface is also an irregular free-for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61F2/30
CPCA61F2/28A61F2/30942A61F2002/2871A61F2002/30985A61F2002/30948A61F2310/00407A61F2002/30784
Inventor 陆建华
Owner 南通市海门区人民医院
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