Use of cemented all-polyethylene and metal-backed acetabular components in total hip arthroplasty. A comparative study.
The results of 115 primary total hip arthroplasties (97 patients) performed using the Charnley system and contemporary cementing techniques were reviewed. Fifty-five all-polyethylene cups and 60 metal-backed cups were used. The mean follow-up period was 84 months. No statistically significant difference was noted between groups for radiographic loosening and no cup has been revised to date. Survival analysis did not reveal a statistically significant difference between groups. Although all-polyethylene cups had significantly greater polyethylene thickness, no difference was noted for rate of wear. Increased loosening of the metal-backed cups was not observed. Polyethylene thickness is increased by the use of 22-mm heads and this may have accounted for the lack of difference in loosening rates of the all-polyethylene and metal-backed cups.
Markel
D C
DC
Hospital for Special Surgery Hip Service, New York, New York, USA.
Huo
M H
MH
Katkin
P D
PD
Salvati
E A
EA
D000077:Acetabulum; D001843:Bone Cements; D005260:Female; D006622:Hip Prosthesis / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011095:Polyethylenes; D012189:Retrospective Studies; D016896:Treatment Outcome
D001843:Bone Cements; D011095:Polyethylenes