DINU Vermesan, RADU Prejbeanu, HORIA Haragus,  MIRELA Ahmadi, GRATIAN Damian<br>Metallosis During Partial Component Hip Revision Arthroplasty

DINU Vermesan, RADU Prejbeanu, HORIA Haragus, MIRELA Ahmadi, GRATIAN Damian
Metallosis During Partial Component Hip Revision Arthroplasty

Abstract:

A partial component revision, where the implant is not entirely removed is a tempting option where only some components are damaged and others are well fixed. This is especially important for young patients where prolonging the survival of the joint replacement is paramount since advantages of partial revision in hip replacement are well-documented. Data in the literature are scarces and disparated on metallosis during partial component hip revision arthroplasty being limited mostly on case series. We therefore consider useful to present a study which aims to discuss this topic based on current knowledge and personal experience. We present a case of metallosis occurring after revision for infection in a 52 years old active male with hip arthroplasty. Fibrotic material from intraoperative debridement was given to histopathological analysis. The results offered a picture of unspecific reaction to metallic debris indicating asymptomatic metallosis. The patient had 4.1 mcg/L of cobalt and 5.9 mcg/L of serum chromium immediately after surgery. These measures were repeated at last follow- up (2 years) and were considerably lower, to 1.5 mcg/L of cobalt and 2.3 mcg/L of serum chromium. The real incidence of metallosis is unknown, although it seems to be more frequent in hip than in knee arthroplasty. It is caused by the infiltration and accumulation of metallic debris into the peri-prosthetic structures, deriving from friction between metallic prosthetic components. Keywords: metallosis, partial component, hip, revision arthroplasty

Issue: 2012, Volume 63, Issue 9

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