The role of patient factors and implant position in squeaking of ceramic-on-ceramic total hip replacements

• DOI: 10.1302/0301-620x.93b4.25707
• Publication Date: 2011-04-04T23:18:36Z
• Authors: S. A. Sexton; E. Yeung; M. P. Jackson; S. Rajaratnam; J. M. Martell; W. L. Walter; B. A. Zicat; W. K. Walter
• Keywords: Bearing surface; Harris Hip Score

We investigated factors that were thought to be associated with an increased incidence of squeaking ceramic-on-ceramic total hip replacements. Between June 1997 and December 2008 the three senior authors implanted 2406 primary replacements a bearing surface. The mean follow-up was 10.6 years. diagnosis osteoarthritis in each case, no patient had undergone previous surgery hip. identified 74 hips (73 patients) giving 3.1% at 9.5 years (4.1 13.3). Taller, heavier younger patients significantly more likely have squeaked. Squeaking higher range post-operative internal (p = 0.001) external rotation 0.003) compared silent hips. Patients activity levels 0.009). A not significant difference satisfaction 0.24) or Harris score 0.34). Four implant position enabled good prediction squeaking. These high acetabular component inclination, femoral offset, lateralisation centre either low anteversion. This is largest study date examine predispose results suggest which increase mechanical forces across joint risk neck-to-rim impingement, therefore edge-loading, are those