title: Coupling failure between stem and femoral component in a constrained revision total knee arthroplasty.
abstract: Knee revision using constrained implants is associated with greater stresses on the implant and interface surfaces. The present report describes a case of failure of the screw coupling between the stem and the femoral component. The cause of the failure is surmised with outline of the treatment in this case with extensive femoral bone loss. Revision implant stability was augmented with the use of a cemented femoral stem, screw fixation and the metaphyseal sleeve of an S-ROM modular hip system (DePuy international Ltd).
authors: Department of Trauma and Orthopaedic Surgery, UPMC, Beacon Hospital Dublin, Ireland.
authors: Ahsan Javed
authors: AJ
authors: Butt
authors: Aamir Hassan
authors: AH
authors: Shaikh
authors: Hugh U
authors: HU
authors: Cameron
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D002484:Cementation; D005264:Femoral Fractures / Q000209:etiology / Q000601:surgery*; D006801:Humans; D008297:Male; D057068:Periprosthetic Fractures / Q000209:etiology / Q000601:surgery*; D011475:Prosthesis Failure; D012086:Reoperation; D016896:Treatment Outcome