Single ankle joint surface replacement system

An ankle, replacement technique, applied in the direction of ankle joint, wrist joint, joint implant, etc., to achieve the effect of enhancing stability, enhancing long-term stability, increasing anti-torsion and anti-pullout force

CN109620483AActive Publication Date: 2019-04-16THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-04-16

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Abstract

The invention provides a single ankle joint surface replacement system, which consists of a shin side face, a rotating core and a calcar side face, wherein the shin side face and the calcar side faceare made of metal or alloy materials, and the rotating core is made of polyethylene abrasion-resistant material. By using the structure, single ankle joint surface replacement can be achieved. The front part of the shin side face is connected with a sagittal position of the body at an angle, and the top part of the shin side face is a rough spraying surface or a non-polished metal surface; the bottom of the shin side face is a polished smooth surface. And the middle part of a body part is provided with a double-fin keel. The left diameter and right diameter and the front diameter and back diameter of the rotating core are smaller than that of the shin side face; the top of the rotating core is convex in sagittal position and coronal position, and the bottom of the rotating core is horizontal smooth plane. The polished horizontal smooth surface is arranged at the top part of the calcar side face, the non-polished metal surface is arranged at the bottom part, and the double-fin keel is arranged at the middle part of the bottom part. The system has the advantages of simple structure, convenient use, good ankle joint function, effective bone retention, effective improvement of initialstability and reduction of refurbishment rate.
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Description

technical field

[0001] The invention belongs to the technical field of a single ankle joint surface replacement system used in partial ankle joint surface replacement surgery, in particular to a single ankle joint surface replacement system and an implantation method. Background technique

[0002] At present, ankle arthrodesis and artificial total ankle arthroplasty are the mainstream operations for the treatment of end-stage ankle joint diseases, such as traumatic arthritis, osteoarthritis, rheumatoid arthritis and other diseases. The joint function is poor, so total ankle arthroplasty has become a popular treatment method, and its application is gradually increasing. The artificial ankle joints currently used clinically are total ankle joint replacements, that is, the articular surfaces of the distal tibia and the proximal talus are all replaced, but many patients suffer from ankle joint degeneration, cartilage defect or injury, and pain mainly comes from the ankle joint ...

Examples

Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0029] In order to provide a thorough understanding of the present invention, the detailed structure will be set forth in the following description. It is evident that the practice of the i...