Total hip replacements using the ceramic Mittelmeier prosthesis.
One hundred twelve consecutive primary total hip replacements were performed for osteoarthritis or osteonecrosis by a single surgeon using the Mittelmeier ceramic prosthesis without cement between January 1983 and July 1984. Ninety-three of these hips were followed prospectively to a minimum of 60 months and a median of 108 months. Five (5.4%) hips have been revised for loosening. Of the remaining hips, 77 (87.5%) were rated clinically satisfactory. Cumulative survival probability using revision as endpoint was estimated to be 92.7% at 5 years and 87.9% at 10 years. However, overall mechanical failure rates were 21.5% for the cup and 22.6% for the stem. There was no case of either femoral or acetabular osteolysis observed.
Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
M H
MH
Huo
R P
RP
Martin
L E
LE
Zatorski
K J
KJ
Keggi
D000293:Adolescent; D000328:Adult; D000368:Aged; D002484:Cementation; D002516:Ceramics; D005260:Female; D005271:Femur Head Necrosis / Q000601:surgery*; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000295:instrumentation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery*; D010014:Osteolysis; D011183:Postoperative Complications; D011474:Prosthesis Design; D012086:Reoperation; D016019:Survival Analysis