Osteolysis after unidirectional and multidirectional mobile-bearing total knee arthroplasty in young patients.
We questioned whether a difference exists between multidirectional and unidirectional mobile-bearing total knee arthroplasties in terms of clinical results and the prevalence of polyethylene wear and periprosthetic osteolysis. We studied 62 patients who underwent simultaneous bilateral total knee arthroplasties, with a unidirectional prosthesis implanted in 1 knee and a multidirectional one in the other. Of the patients, 9 were men and 53 were women, with a mean age of 57.6 years (35-60 years). The minimum follow-up was 11 years (mean, 11.8 years; range, 11-13 years). Preoperative and postoperative knee and functional scores were not different between the 2 groups. No knee in either group had detectable tibial polyethylene liner wear or osteolysis on radiographs or on computed tomography scans. Two (3%) knees in each group were revised.
Joint Replacement Center of Korea, Ewha Womans University School of Medicine, Seoul, South Korea.
Young-Hoo
YH
Kim
Jun-Shik
JS
Kim
Yoowang
Y
Choi
D000328:Adult; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects* / Q000295:instrumentation* / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000502:physiology / Q000601:surgery; D007720:Knee Prosthesis / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000000981:diagnostic imaging / Q000209:etiology* / Q000503:physiopathology; D020959:Polyethylene; D015995:Prevalence; D011474:Prosthesis Design; D014057:Tomography, X-Ray Computed
D020959:Polyethylene