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Randomized controlled trial of radiographic and patient-assessed outcomes following fixed versus rotating platform
Wael A Rahman1, Donald S Garbuz, Bassam A Masri
1Division of Lower Limb Reconstruction and Oncology, Department of Orthopaedics, University of British Columbia, Vancouver, British Columbia, Canada.
Abstract:
This prospectively blinded randomized controlled study evaluated the difference in the functional and radiological outcomes in patients who received a press-fit condylar Sigma cemented cruciate-substituting total knee arthroplasty with either a rotating platform (RP) or a fixed bearing (FB). There were 51 joints in 49 patients: 24 joints in the RP group (mean follow-up, 43 months) and 27 joints in the FB group (mean follow-up, 40 months). At baseline, there was no significant difference in age, body mass index, preoperative diagnosis, Charnley class, range of motion, clinical and functional scores, between the RP and FB groups. At mid-term follow up both the RP and FB give equivalent results, but patients with the RP tended to have a higher activity level score.