COMPARISON OF FIXED BEARING AND MOBILE BEARING DEVICES IN TOTAL KNEE ARTHROPLASTY

Aim: In order to differentiate the clinical solutions of mobile bearing versus implant of fixed bearings during arthroplasty of total knee. A total of 36 patients with implants of fixed bearing and 28 with impla Methodology: nts of mobile bearing were studied. Those above 45 years of age and presented with grade 3 or 4 arthritis of knee were included. Patients were followed up at 1 month, 3month, 1 year and then yearly. Clinical evaluation was done by knee society clinical grading system after a minimum follow up of 1 year. There was a significant increa Results: se in clinical knee society score from a pre-operative score of 55.83± 5.262 to 84.58±8.550 in the group of fixed bearing, while it increased from 57.43±3.371 to 88.07±6.633 in the knee group of mobile bearing. The functional knee society score increased from 32.64±14.952 to 84.58± 8.483 in fixed bearing and from 36.25±21.8 to 85.71±7.034 in the group of mobile bearing. There was statistically significant difference in the scores. However, when we compared both the implants, none was superior. The pre-operative range of motion increased from 86.25±10.027 to 120.33±17.342 in fixed bearing and from 84.32±8.251 to 122.43±15.262 in the mobile bearing group. This increase was significant based on statistics. Conclusion: High flexion and standard fixed bearing devices were both similar in results, indicating that proper patient selection and precise surgical techniques remains the gold standard principles in order to achieve optimum outcome after total knee arthroplasty