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Tibial tray fracture in a modern prosthesis with retrieval analysis
Journal article   Open access   Peer reviewed

Tibial tray fracture in a modern prosthesis with retrieval analysis

John J. Callaghan, David E. DeMik, Nicholas A. Bedard, Andrew N. Odland, William M. Kane and Steven M. Kurtz
Arthroplasty today, v 4(2)
Jun 2018
PMID: 29896542
url
https://doi.org/10.1016/j.artd.2017.12.005View
Published, Version of Record (VoR)CC BY-NC-ND V4.0 Open

Abstract

Complication Prosthesis failure Tibial component Total knee arthroplasty
Fracture of the tibial tray is a rarely observed complication of total knee arthroplasty (TKA), predominately in implants placed greater than a decade ago. This case highlights a case of baseplate fracture in a contemporary prosthesis. The patient presented 1 year after TKA with medial knee pain consistent with pes bursitis. The implant-cement-bone construct was intact and she was managed with corticosteroids. She had persistent pain, acutely developed new varus deformity, and presented with a tibial tray fracture. Retrieval analysis suggested fatigue fracture as the likely mechanism. At time of revision, necrotic bone was found at the medial plateau, which likely caused cantilever bending relative to the well-supported portion of the tray and resultant failure. The patient continues to do well 5 years after revision TKA.

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