Usman Nazir Gill, Hafiz Muhammad Shiraz, Muhammad Khalid-ur Rehman, Adnan Latif Malik, Muhammad Hanif Mian.
Comparison of Functional Outcome of Medial Pivot Total Knee Arthroplasty - a Randomized Trial.
Pak J Med Health Sci Jan ;13(2):385-8.

Background: Despite the wide acceptance of PS Total knee arthroplasty design as an answer to advance osteoarthritis of knee joint, still there are many short comings especially in terms of reproducing normal kinematics of the knee joint. Therefore, Medial Pivot TKA system is gaining popularity as it reproduces nearly a normal knee kinematics by pivoting medial condyle of femoral component with a concave medial part of tibial polyethylene insert like ball and socket mechanism . Methods: A total of 70 patients were included in this study, half of whom underwent Medial Pivot TKR and the other half was managed by PS total knee design. Data was collected preoperatively and postoperatively at 6 months, 1 year and 2 years; from August 2016 till October 2018. Functional outcome was assessed in terms of Knee society score KSS, ROM and Forgotten Joint Score-12 FJS-12. Results: In our study, male to female ratio was 13:22 and 11:24 in group-A (MP-TKA) and group-B (PS-TKA) respectively. The mean knee flexion at the end of our study was 119.4 0 +/- 3.16 in group-A and 113.4 0 +/- 2.47 in group-B. Similarly, FJS-12 was considerably better in group-A (60.08 +/- 16.72) with p-value <0.001 as compared to group-B. Knee society score was comparable in both groups with p-value of 0.180. Conclusion: We have found better results in the group treated with Medial Pivot TKR in terms of Knee society score KSS, ROM and Forgotten Joint Score-12 FJS-12.

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