Ambulatory measurement of the knee adduction moment in patients with osteoarthritis of the knee

Mean differences in KAdM between the ambulatory and laboratory system were not significant (maximal difference 0.20 %BW⁎H in late stance, i.e. 5.6% of KAdM range, P>0.05) and below clinical relevant and hypothesized differences, showing no systematic differences at group level. Absolute differences were on average 24% of KAdM range, i.e. 0.83 %BW⁎H, particularly in early and late stance. To achieve greater accuracy for clinical use, estimation of joint position via a more advanced calibrated linked-segment model should be investigated.