Restoration of gait symmetry following anterior cruciate ligament reconstruction (ACLR) is
crucial to minimize the risk of joint degeneration. To achieve this, it is essential that the
chosen measurement method can accurately assess knee kinematics and detect the changes in
multi-planes of motion. However to date, limited study is available on repeatability of the
multi-planes knee angle measurements particularly among male patients post ACLR. The
purpose of this study was to assess the test-retest reliability of knee kinematic measurements
using three-dimensional (3D) motion analysis system during gait in post ACLR patients.
Eight patients with mean (SD) age 28.89 (4.0) years, 5.82(4.07) months post ACLR were
recruited from a tertiary hospital of Kuala Lumpur. All patients undergone two sessions of
knee joint angles measurement during gait at four hours interval, for the injured and the
non-injured knees. Angles in the sagittal, frontal and transverse planes during initial contact
phase of gait that derived from the two measurement sessions were compared.
