Combined tumor-type ankle joint prosthesis

An ankle joint and combined technology, applied in the direction of ankle joints, joint implants, joint implants, etc., can solve the problems of lower ankle joint mobility, etc., and achieve the effects of improving long-term efficacy, simple operation, and simple structure

Inactive Publication Date: 2014-02-26
SHANGHAI TENTH PEOPLES HOSPITAL
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Problems solved by technology

[0002] Under normal circumstances, below-knee amputation is the standard surgical procedure for malignant tumors in the middle and lower part of the tibia, but with the development of limb salvage technology and material science, autogra Prosthesis hybrid reconstruction) large bone defect after distal tibial tumor resection, and most scholars believe that the long-t

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  • Combined tumor-type ankle joint prosthesis
  • Combined tumor-type ankle joint prosthesis
  • Combined tumor-type ankle joint prosthesis

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, the present invention is described in further detail, so that those skilled in the art understand:

[0025] Such as Figure 1-5 As shown, the labels represent:

[0026] Talar side member 1, crest 11, crest 12, crest 13, sliding surface 14, constriction 145, bottom surface 15, polyethylene liner 2, protrusion 21, glenoid socket 22, flange 23, top member 3, upper part 31 , concave bayonet 311, lower part 32, T-shaped groove 321, through hole 33, ridge 34.

[0027] see Figure 1-5 As shown, the combined tumor-type artificial ankle joint prosthesis in this embodiment is composed of the top component of the ankle joint, the polyethylene liner and the side component of the talus in sequence from top to bottom, wherein:

[0028] Talar side member

[0029] The bottom surface 15 of the talar side member 1 protrudes with three ridges inclined backward and downward, which are successively ridges 11, 12, and 13. These three ridges...

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Abstract

The invention relates to a combined tumor-type ankle joint prosthesis which comprises an ankle bone side component, a polyethylene liner and a top component. Three backward down inclined ridges are formed at the bottom of the ankle bone side component in a projecting manner, an arched sliding surface is formed at the top of the ankle bone side component, a T-shaped projection is transversely arranged at the top of the polyethylene liner, the bottom of the polyethylene liner is recessed inwards to form a joint fossa for containing the sliding surface, the top component is provided with an upper connecting surface for connecting the top component with a tibial prosthesis, a T-shaped groove for containing the projection is transversely formed in the bottom of the top component, five through holes for repairing ligaments on the inner side and the outer side of an ankle joint are formed in the top component in a front and rear penetrating manner, the inner side of the top component extends downwards to form a projecting ridge, and the projecting ridge is abutted to the inner side face of the polyethylene liner. The prosthesis is reasonable in structural design, preparation and surgical operation are facilitated, stability of an artificial ankle joint is enhanced, loading and moving functions of the ankle joint are restored, and the prosthesis is suitable for limb salvage treatment of distal tibial malignant tumors.

Description

technical field [0001] The invention discloses an ankle joint prosthesis for reconstructing a large bone defect after distal tibial tumor resection, in particular to a combined tumor-type prosthesis composed of an ankle joint top component, a polyethylene liner and a talus side component. Ankle prosthesis. Background technique [0002] Under normal circumstances, below-knee amputation is the standard surgical procedure for malignant tumors in the middle and lower part of the tibia, but with the development of limb salvage technology and material science, autogra Prosthesis hybrid reconstruction) large bone defect after distal tibial tumor resection, and most scholars believe that the long-term efficacy of prosthetic reconstruction of large bone defect after distal tibial tumor resection is ideal. The traditional tumor-type artificial ankle prosthesis is mostly hinged. Although the stability of the ankle joint is protected to a certain extent, the articular surface can only ...

Claims

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Application Information

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IPC IPC(8): A61F2/42
Inventor 张春林曹庆宏赵世昌王晖朱忠胜黄荣根
Owner SHANGHAI TENTH PEOPLES HOSPITAL
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