Fig. 3From: A comparative study of flat surface design and medial pivot design in posterior cruciate-retaining total knee arthroplasty: a matched pair cohort study of two yearsRelationship of preoperative and postoperative ROM. (Postoperative ROM) = 73 + 0.4× (preoperative ROM), R = 0.622, p = 0.001, simple regression analysis. White dots: FINE Knee group, black dots: Hi-Tech Knee II group, and gray dots: overlapping of FINE Knee and Hi-Tech Knee II groupsBack to article page