Metallosis: A diagnosis not only in patients with metal-on-metal prostheses

Although the real actual incidence of metallosis is unknown, it is described as a rare diagnosis with a 5% estimated incidence in the hip prosthetic replacements. The adoption of non-metallic articular prosthetic devices, made of polyethylene and ceramic, is the main reason to the diminishing number of reported cases. We present a case of metallosis with a clinicalsystemic presentation in a patient with a non metallic hip prosthesis, which occurred due to a fracture of the acetabular liner component, leading to abnormal metalmetal contact. The metallic debris leads to a massive local and systemic release of cytokines. Revision is necessary whenever osteolysis and loosening of the prosthesis occur. Imaging evaluation, especially CT, has a central role in diagnosis and planning the surgical treatment. (C) 2014 Published by Elsevier Ltd.