In this prospective, randomized study of 80 patients, Abdel-Salem and Eyres reported significantly lower pain scores in the non-tourniquet group than in the tourniquet group using a linear analogue scale (mean pain score at 4 hours = 4 and 8, respectively, p<0.05). In addition, the authors identified more cases of wound infection and deepvein thrombosis in the tourniquet group.In this randomized radiosteriometric analysis (RSA) study of 50 patients, Ledin et al. found pain measurements using a visual analogue scale were lower in the nontourniquet group ( p=0.01) and range of motion was 11 degrees greater in the non-tourniquet group (p=0.001 at 2 years). In addition, RSA showed no significant differences in loosening at 6 months, 1 year, and 2 years.Effects of tourniquet during total knee arthroplasty. A prospective randomised study. Abdel-Salam A, Eyres KS. J Bone Joint Surg Br. 1995;77(2):250-253.