High Incidence of Squeaking in THAs with Alumina Ceramic-on-ceramic Bearings

• DOI: 10.1007/s11999-008-0177-8
• Publication Date: 2008-02-25T16:05:11Z
• Authors: J. C. Keurentjes; R. M. Kuipers; D. J. Wever; B. W. Schreurs
• Keywords: Alumina ceramic

Ceramic-on-ceramic bearings in THA are a popular alternative to overcome wear concerns traditional metal-polyethylene bearings. However, squeaking is potentially worrisome phenomenon ceramic-on-ceramic THAs which we observed some of our patients. We reviewed all 42 patients who underwent 43 noncemented during the time study. Squeaking, defined as reproducible sound squeaking, clicking, or grating, occurred nine implants (20.9%). Standard radiographs were normal. used CT imaging determine cup anteversion and inclination angles, comparing hips with those randomly selected control group, but found no differences. then hypothesized specific design features (stem size, head neck length head) would be risk factors for squeaking. difference between nonsqueaking implants. A -4 mm shorter resulted relative 5.56 (95% confidence interval, 1.14-27.01) high incidence population, believe this an underreported side effect these types short femoral implant was factor THA.Level III, therapeutic