Squeaking in ceramic-on-ceramic hips: the importance of acetabular component orientation.
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 degrees +/- 10 degrees anteversion and 45 degrees +/- 10 degrees 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 degrees ) than hips that squeaked with bending (19 degrees ) (P = .001) or prolonged walking (18 degrees ) (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.
Walter
William L
WL
Sydney Hip and Knee Surgeons, Sydney, NSW, Australia.
O'toole
Gary C
GC
Walter
William K
WK
Ellis
Andrew
A
Zicat
Bernard A
BA
D000077:Acetabulum; D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D002516:Ceramics; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009622:Noise; D015207:Osteoarthritis, Hip / Q000601:surgery*; D011474:Prosthesis Design; D012086:Reoperation