Metal-on-metal surface arthroplasty with a cemented femoral component: a 7-10 year follow-up study.
Forty-two McMinn metal-on-metal surface arthroplasties were implanted in 23 males and 16 females, average age 47.5 years old. The overall survivorship at 7 years was 79%; with any reoperation surgery as endpoint, 80%; and 93%; with aseptic loosening of the socket and femoral component, respectively. The average Surface Arthroplasty Risk Index of patients who had failed or were at risk of failing on the femoral side was significantly greater than for the rest of the cohort, 3.9 versus 1.9. The overall survivorship of the McMinn component was unacceptably low, with the majority of failures occurring with the cemented acetabular components. The recent reintroduction of surface arthroplasty of the hip using metal-on-metal bearings and cementless acetabular components may benefit young patients with hip arthritis with appropriate patient selection.
Beaulé
Paul E
PE
UCLA David Geffen School of Medicine, Department of Orthopaedics, Los Angeles, California, USA.
Le Duff
Michel
M
Campbell
Pat
P
Dorey
Fred J
FJ
Park
Sang Hyun
SH
Amstutz
Harlan C
HC
D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D001843:Bone Cements; D005260:Female; D005269:Femur; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008670:Metals; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation
D001843:Bone Cements; D008670:Metals