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Prosthetic device for total joint replacement in small joint arthroplasty

A joint and prosthesis technology, applied in the field of prosthetic devices, can solve problems such as aseptic loosening and joint deformation

Inactive Publication Date: 2013-05-29
THE UNIVERSITY OF HONG KONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still the possibility of joint deformation due to muscle imbalances
Moreover, aseptic loosening induced by inductive particles produced by polyethylene components remains unresolved in arthroplasty

Method used

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  • Prosthetic device for total joint replacement in small joint arthroplasty
  • Prosthetic device for total joint replacement in small joint arthroplasty
  • Prosthetic device for total joint replacement in small joint arthroplasty

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] An exemplary prosthetic device embodying the principles of the invention is shown in the accompanying drawings. In the following descriptions of various prosthetic device embodiments, the same elements or components are denoted by the same reference numerals and repeated descriptions are omitted.

[0029]The prosthetic device may include a pair of articulating components 1 and 2 adapted to fit on adjacent bones 3 and 4, respectively, instead of a joint. The first and second joint parts 1 and 2 may comprise first and second bearing elements 5 and 6, respectively. Bearing elements 5 and 6 may be configured to replace at least a portion of the bony ends of adjoining bones 3 and 4, respectively, and provide an articulation that approximates the natural articular bone ends, as will be described in more detail below. The bearing elements 5 and 6 can be fixed to the corresponding bone 3 by a primary implant fixation with a press fit of anchoring immediately after surgery and / ...

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PUM

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Abstract

A prosthetic device having a pair of articulating components adapted to respectively fit to adjacent bones in place of a joint. The first and second joint parts may have first and second bearing elements, respectively. The bearing elements can be configured to replace at least a portion of the bone ends of the adjacent bones, respectively, and provide articulation that approximates a natural joint. These bearing elements can be fixed to the corresponding bone by an initial implant fixation established by press-fit anchors and / or from bony ingrowths immediately after surgery Obtained with secondary implant fixation.

Description

technical field [0001] The present invention generally relates to a prosthetic device. In particular, it relates to a prosthetic joint substitute for reconstructing a joint such as a finger joint or other comparable joints containing synovial fluid. The invention also relates to a method of using a surgically implantable prosthetic device that substantially resembles the original anatomy of the joint. Background technique [0002] While muscular pull on the flexors or extensors produces torque that facilitates joint motion, the stability of a joint in resting position or in motion depends on both the constraints of the natural biamplear anatomy and the integrity of the soft-tissue mechanisms. Typical joint motion includes restricted flexion with rotation and lateral excursion due to limitations from biamplear configuration and ligamentous support. For example, the normal range of motion of the proximal phalanx (PIP) joint is about 0 degrees in extension to 100 degrees in f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/30A61F2/00A61F2/42
CPCA61F2/4241A61F2002/30125A61F2002/30146A61F2002/30153A61F2002/30158A61F2002/30362A61F2002/30881A61F2002/30904A61F2220/0033A61F2230/0008A61F2230/0017A61F2230/0019A61F2230/0026A61F2310/00029A61F2002/4243
Inventor 周肇平林国伟I·吉布森
Owner THE UNIVERSITY OF HONG KONG
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