Customized radial head prosthesis based on 3D anatomy of the proximal radius of the unaffected side

Abstract

The invention discloses a custom radial head prosthesis based on the three-dimensional anatomy of the proximal radius of the healthy side, and belongs to the field of radial head prosthesis customization. The radial head prosthesis is customized based on the three-dimensional anatomy of the proximal radius of the healthy side. Excellent matching and excellent biomechanical properties can effectively avoid the osteoporosis of the humeral capitulum and the destruction of the articular cartilage surface. In addition, during the staged printing process, a cartilage support layer can be formed in the outer cartilage layer as in the prior art, so that the cartilage support layer can be formed. The supporting strength of the cartilage layer itself is high, which effectively avoids the loosening of the prosthesis after the partial abrasion of the cartilage on the prosthesis in the prior art. At the same time, when the outer cartilage layer is partially worn away, the cartilage in the radial bone layer with multiple permeable holes grows. The fluid leaks out along the worn area, effectively guiding the growth of chondrocytes at the worn area, thereby realizing the self-repairing effect of the worn cartilage. Compared with the existing technology, it can effectively ensure the compatibility between the prosthesis and the patient, and improve the internal prosthesis of the patient. service life of the body.

Description

technical field [0001] The present invention relates to the field of radial head prosthesis customization, and more particularly, to the customized radial head prosthesis based on the three-dimensional anatomy of the proximal radius of the healthy side. Background technique [0002] Radial head prosthesis is often used to treat patients with comminuted fractures of the radial head who cannot reconstruct the stability of the elbow joint. The complexity of the forearm and elbow joints determines that the radial head prosthesis replacement must achieve the exact match between the prosthesis and the affected elbow. [0003] The elbow joint is one of the complex joints in the human body. Studies have shown that most of the concave surface of the radial head is oval, the annular articular surface is also an irregular free surface, and there is an eccentricity between the center of the concave surface and the axis of the radial neck, so the movement of the upper radioulnar joint d...

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

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