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Volume 22, Issue 4, Pages 496-503 (June 2007)


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Squeaking in Ceramic-on-Ceramic Hips: The Importance of Acetabular Component Orientation

William L. Walter, MBBS, FRACS, FAOrthACorresponding Author Information, Gary C. O'Toole, FRCS (Tr & Orth), William K. Walter, MBBS, FRCS, FRACS, FAOrthA, Andrew Ellis, MBBS, FRACS, FAOrthA, Bernard A. Zicat, MD, FRACS, FAOrthA

Received 24 January 2006; accepted 30 June 2006. published online 29 March 2007.

Abstract 

Audible squeaking in total hip replacements with ceramic-on-ceramic bearings is a rare problem. Acetabular component orientation was compared for 17 squeaking hips and 17 matched controls. Ninety-four percent of control hips were in a range of 25° ± 10° anteversion and 45° ± 10° inclination, but only 35% of squeaking hips were in this range (P = .0003). Eight hips squeak with bending. Four hips squeak with walking, and 5 hips squeak after prolonged periods of walking. Hips that squeaked with walking had acetabular components that were more anteverted (40°) than hips that squeaked with bending (19°) (P = .001) or prolonged walking (18°) (P = .020). The hips started squeaking after an average of 14 months. Patients with squeaking hips were younger, heavier, and taller than patients with silent hips.

Key wordsceramic, squeak, alumina, hip

 Sydney Hip and Knee Surgeons, Sydney, NSW, Australia

 Royal North Shore Hospital, Pacific Highway St Leonards, NSW, Australia

Corresponding Author InformationReprint requests: William L. Walter, MBBS, FRACS, FAOrthA, Sydney Hip and Knee Surgeons, Level 3, 100 Bay Road, Waverton, NSW 2060, Australia.

 No benefits or funds were received in support of the study.

PII: S0883-5403(06)00512-2

doi:10.1016/j.arth.2006.06.018


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