Revision of broken knee megaprostheses: new solution to old problems.

ABSTRACT:

Background

Low-cost indigenous megaprostheses used in the developing world are prone to mechanical failure but the frequency and causes are not well established.

Questions/purposes

We retrospectively analyzed the causes of failure, particularly design, and suggest changes to reduce the breakage. We also report our experience with revision surgery.

Methods

We identified 28 breakages in 266 megaprosthetic knee arthroplasties performed between January 2000 and December 2006. Twenty-six breakages were revised to another prosthesis. The complications were studied and the function was evaluated. Prostheses were studied for failure by the computer-aided design program SolidWorks(®) and Hyperworks(®) for finite element analysis (FEA). Design improvements were performed based

SUBMITTER: Agarwal M 

PROVIDER: S-EPMC2947678 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature