Contribution of knee adduction moment impulse to pain and disability in Japanese women with medial knee osteoarthritis

Abstract

Our results suggest that increasing in the knee adduction moment impulse, a proxy for loading on the medial compartment of the knee, is related to increased pain during weight-bearing activities such as walking, thereby restricting walking performance and causing disability by reducing gait velocity. Thus, the reduction in the knee adduction moment impulse during gait may result in pain relief and may serve as a conservative treatment option with disease-modifying potential.

Three-dimensional dynamic analysis of knee joint during gait in medial knee osteoarthritis using loading axis of knee

“…Knee adduction moment is derived by an inverse dynamics approach and has been used to analyze the relationship between gait characteristics and the dynamic mechanism of KOA progression [9][10][11]. Varus thrust is clinically abnormal with pathological kinematics in medial KOA and is defined as acute knee adduction during the early stance phase of gait.…”

Trunk lean gait modification and knee joint load in people with medial knee osteoarthritis: The effect of varying trunk lean angles

“…Clinical implications of a large KAM are significant as the peak KAM is a strong predictor of medial compartment OA radiographic disease severity (16), rate of disease progression (6), and development of chronic knee pain (17). The KAM impulse has also received increasing research focus as it reflects both the mean KAM magnitude and the absolute duration of load (i.e., stance) (5,18,19). Due to the strong clinical relevance of elevated KAM parameters, the success of load-modifying interventions is typically evaluated using measures of the KAM (9).…”

Effects of Arm Swing Limitation on Knee Joint Moment during Walking —Biomechanical Analysis Using a 3D Motion Capture System—

“…The experimental set-up consisted of a Vicon MX13 3-D motion capture system (Vicon Peak, UK) comprising 8 cameras and 6 force plates (AMTI, USA) operating at a frame rate of 200 frames/ second. A total of 29 reflective markers 5) were placed on the acromion, the lateral epicondyle of humerus, the styloid process of the ulna, the top of the crista iliaca, the superior anterior iliac spine, the superior posterior iliac spine, the hip joint (1/3 of the distance from the greater trochanter on a line connecting the greater trochanter to the superior anterior iliac spine), the outside knee joint, the inside knee joint, the lateral malleolus, the medial malleolus, the head of the first metatarsal bone, the head of the fifth metatarsal bone, the calcaneus on either side. In the first gait trial, subjects walked normally without arm swing limitation on a 10-m walkway (no limitation condition).…”