Giovanni Benelli1, Merildo Maritato1, Pierpaolo Cerulli Mariani2, Francesco Sasso1. 1. Orthopaedic and Traumatology Department, Santo Stefano Hospital, Azienda USL Toscana Centro, Prato, Italy. 2. Orthopaedic and Traumatology Department, Santo Stefano Hospital, Azienda USL Toscana Centro, Prato, Italy. pierpaolo.cerullimariani@uslcentro.toscana.it.
Abstract
PURPOSE: The aim of this study is to present an algorithm for the evaluation of both symptomatic and asymptomatic patients. METHODS: From November 2004 to May 2010, there were performed 296 operations: 245 total hip arthroplasty and 51 resurfacing arthroplasty with the ASR DePuy system. In April 2010, there was the first Medical Device Alert regarding all MoM hip replacements in the UK and in August 2010, DePuy recall started worldwide. In March 2012, we started our recall. All patients were invited to undergo clinical investigation, X-ray evaluations, and blood chrome and cobalt level determination. For a short period of time, there were performed second level exams and subsequently, we carried out MARS MRI hip study to all symptomatic patients and there was evidence of ALVAL lesions. RESULTS: To the patients with ALVAL lesions were proposed surgical hip revision while the others frequent follow-up controls. One hundred patients underwent hip surgical revision. CONCLUSIONS: We recommend constant MoM THA patients monitoring and early revision if necessary.
PURPOSE: The aim of this study is to present an algorithm for the evaluation of both symptomatic and asymptomatic patients. METHODS: From November 2004 to May 2010, there were performed 296 operations: 245 total hip arthroplasty and 51 resurfacing arthroplasty with the ASR DePuy system. In April 2010, there was the first Medical Device Alert regarding all MoM hip replacements in the UK and in August 2010, DePuy recall started worldwide. In March 2012, we started our recall. All patients were invited to undergo clinical investigation, X-ray evaluations, and blood chrome and cobalt level determination. For a short period of time, there were performed second level exams and subsequently, we carried out MARS MRI hip study to all symptomatic patients and there was evidence of ALVAL lesions. RESULTS: To the patients with ALVAL lesions were proposed surgical hip revision while the others frequent follow-up controls. One hundred patients underwent hip surgical revision. CONCLUSIONS: We recommend constant MoM THA patients monitoring and early revision if necessary.
Entities:
Keywords:
Adverse reaction to metal debris; Articular surface replacement; Aseptic lymphocytic-dominated vasculitis associated lesions; Metal artifact reduction sequence magnetic resonance imaging; Metal-on-metal; Total hip arthroplasty
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