Unicompartmental knee arthroplasty. A multicenter investigation with long-term follow-up evaluation.
Nonmental-backed, cemented, unicompartmental knee arthroplasty has a survivorship rate in this multicenter investigation at ten years of 91.4% (+/- 2.8). High levels of patient weight were associated with increased need for revision arthroplasty. Overall, men had a lower revision rate (2.4%) compared with women (3.9%). Valgus postoperative alignment was minimally associated with progression of disease as a cause for revision. No difference in revision rates between medial and lateral compartmental arthroplasty was noted. The theoretical clinical benefits of the use of metal-backed tibial components will need to be reevaluated in light of these findings.
Heck
D A
DA
Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis.
Marmor
L
L
Gibson
A
A
Rougraff
B T
BT
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000886:Anthropometry; D001178:Arthroplasty / Q000379:methods; D015992:Body Mass Index; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D012737:Sex Factors; D015996:Survival Rate