TITLE

Rotaglide Total Knee Arthroplasty: A Long-Term Follow-up Study

AUTHOR(S)
Metsovitis, Stergios R.; Ploumis, Avraam L.; Chantzidis, Paraskevas T.; Terzidis, Joannis P.; Christodoulou, Anastasios G.; Dimitriou, Christos G.; Tsakonas, Athanasios C.
PUB. DATE
May 2011
SOURCE
Journal of Bone & Joint Surgery, American Volume;5/4/2011, Vol. 93-A Issue 9, p878
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Mobile-bearing knee designs represent an alternative to conventional fixed-bearing implants in total knee arthroplasty. The purpose of this study was to determine the clinical results of a mobile-bearing knee implant. Methods: From 1990 to 1998, 326 primary consecutive mobile-bearing total knee prostheses were implanted in 260 patients who had a mean age and standard deviation of 66.7 ± 6.9 years. Femoral and tibial components were cemented in all knees, and the patella was resurfaced in 199 knees (61%). Patients were evaluated with the use of the Knee Society clinical rating system and radiographic examinations. Complications were noted, and survivorship of the prostheses was determined. Results: The mean follow-up period was 156 ± 27.3 months, with maximum follow-up at eighteen years. The mean Knee Society knee score improved from 32.4 ± 21.2 preoperatively to 92.6 ± 10.0 at the time of the last follow-up (p = 0.00), and the mean Knee Society functional score improved from 39.3 ± 18.7 preoperatively to 66.7 ± 18.6 at the time of the last follow-up (p = 0.00). Mean knee flexion improved from 92.3° ± 14.5° preoperatively to 112.1° ± 13.4° at the time of the last follow-up (p = 0.00). There were twenty-four (7.4%) knees that required revision. In eighteen (5.5%) knees, worn out or broken polyethylene.was found and a polyethylene-only exchange was done. Six knees (1.8%) were fully revised. The survival rate was 0.96 (95% confidence interval, 0.93 to 0.98) at ten years and 0.87 (95% confidence interval, 0.79 to 0.93) at eighteen years. Conclusions: A fully congruent, mobile-bearing total knee prosthesis had excellent survivorship during the ten to eighteen- year follow-up interval.
ACCESSION #
60581126

 

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