[Problem] To provide a gait abnormality assistance device and a gait abnormality assistance method with which a predictor of the onset of a gait abnormality associated with motor-related symptoms is detected in advance and motion assistance is performed. [Solution] A predictor of the onset of a gait abnormality associated with motor-related symptoms of a wearer is detected on the basis of a correlation between a gait cycle and a gait cycle reduction ratio relative to gait shortly before. When a predictor of the onset of the gait abnormality is detected, a drive unit is controlled such that the drive unit provides an assistive force to the wearer's knee joint, and when no predictor of the onset of the gait abnormality is detected, the drive unit is controlled such that drive torque of the drive unit does not obstruct the walking motion of the wearer.
GAIT ABNORMALITY ASSISTANCE DEVICE AND GAIT ABNORMALITY ASSISTANCE METHOD