Title: Failure causes in hip resurfacing arthroplasty – retrieval analysis

Authors: Tudor Atasiei; Iulian Antoniac; Dan Laptoiu

Addresses: Department of Orthopaedic and Trauma Surgery, University of Medicine and Pharmacy Bucharest, 'Sf. Pantelimon' Hospital, 340 Sos Pantelimon 021623, Bucharest, Romania. ' University Politehnica Bucharest, 313 Splaiul Independentei, 060042, Bucharest, Romania. ' Colentina Clinical Hospital Bucharest, 21 Stefan cel Mare str. 072202, Bucharest, Romania

Abstract: Metal-on-metal hip resurfacing arthroplasty represents an alternative treatment option for young and active patients with osteoarthritis. The advantages of metal-on-metal hip resurfacing arthroplasty include lower wear rate, restoration of anatomic hip biomechanics, preservation of bone stock for subsequent revision procedures, and enhanced stability due to the larger diameter of articulation. Since renaissance of hip resurfacing in 1991, failures of this procedure have challenged both surgeons and engineers to improve the surgical techniques and characteristic of the devices. This paper tries to summarise the causes of failure of hip resurfacing and offers a few examples among our experience with this procedure.

Keywords: hip resurfacing; failure causes; metal-on-metal bearings; femoral neck fracture; dislocation; arthroplasty; osteoarthritis; wear rate; hip biomechanics; bone stock; stability; resurfacing failure.

DOI: 10.1504/IJNBM.2011.045882

International Journal of Nano and Biomaterials, 2011 Vol.3 No.4, pp.367 - 381

Published online: 14 Mar 2012 *

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