Anatomical ankle prosthesis with fixing pad

Abstract

The invention discloses an anatomical ankle prosthesis with a fixing pad. The anatomical ankle prosthesis comprises a tibia side component, the fixing pad and a talus side component and is characterized in that the top end of the tibia side component is provided with an upper supporting surface, four projection first dowels are fixedly arranged at four corners of the upper supporting surface respectively, and the middle of the tibia side component is fixedly connected to the bottom middle of an amputated tibia far end through a recess screw. The anatomical ankle prosthesis has advantages that the middle of the tibia side component is fixedly connected to a talus far end through the recess screw while the upper supporting surface are fixedly connected with the tibia far end through the four first dowels respectively, the four first dowels are in isosceles trapezoidal arrangement, stability in connection between the tibia side component and the amputated tibia far end is achieved, a lower slide surface at the bottom end of the fixing pad is in slide connection with an upper slide surface at the top end of the talus side component, and the upper supporting surface, the lower slide surface and the upper slide surface are all arc and matched with an articular surface of the tibia far end in radian to make the prosthesis better accord with a real human ankle structure.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anatomical fixed pad ankle joint prosthesis. Background technique [0002] Artificial total ankle joint prosthesis is mainly used in patients with ankle joint pain, deformity, and loss of function caused by various trauma, autoimmune diseases, and degenerative diseases. The current commonly used total ankle joint fusion will cause patients to lose almost all ankle joints Total ankle joint replacement can preserve most of the ankle joint's motor function and completely solve the patient's pain and deformity problems. The results of domestic and foreign patent inquiries show that there is currently no design of a total ankle prosthesis that is completely bionic and conforms to the anatomical structure of the real ankle joint of the human body. Therefore, the revision rate, prosthesis loosening rate, and instability are high. It has been more than half a century since t...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects of high revision rate, high loosening rate and low stability of ankle joint prosthesis existing in the prior art, the present invention provides an anatomical fixed liner ankle joint prosthesis

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