Comparison between PFC Sigma Rotating Platform (standard design) and Buechel Pappas High-Flexion Total Knee Arthroplasties (A Randomized Controlled Study)

The purpose of the present study was to compare the short term clinical and functional outcomes of PFC Sigma Rotating-Platform (standard design) with those of Buechel Pappas High- Flexion total knee replacements using Knee Society knee score and Functional knee score.120 knees were randomly allocated to receive either a PFC Sigma Rotating-Platform (n=60) or Buechel Pappas High- Flexion (n=60) total knee prosthesis between January 2010 to December 2011, and were followed for an average mean period of 42.3 months. At the time of the latest follow-up, the average range of motion was 96.850 (range, 750 to 1200) in the knees with a PFC Sigma RotatingPlatform prosthesis and 102.750 (range, 850 to 1200) in the knees with a Buechell Pappas High-Flexion prosthesis. With a margin of 60 improvement in range of motion in Buechel Pappas High-Flexion knee replacements group, difference was statistically significant (p = 0.003).