Provided is a spasticity measurement device making it possible to readily measure the degree of spasticity. A spasticity measurement device (10) is provided with a leg attachment tool (12) to which a lower leg attachment part (24) and a foot-accepting part (20) are linked so as to enable relative rotation. When the lower leg attachment part (24) and the foot-accepting part (20) are rotated in a relative fashion, the rotation is prohibited by a rotation prohibition device comprising a projection (88), an engagement recess (86), a helical compression spring (94), and other components, and the muscle contraction force acting in the direction of rotation thereof in this state is measured by a muscle contraction force measurement device constituted of a strain gauge (78), a data processing device (82), and other components. For this reason, rotating the foot-accepting part (20) and the lower leg attachment part (24) in a relative fashion causes rhythmic and repeated contraction in a test subject in whom spasticity of the lower leg (16) has been induced, while the lower leg flexor muscles remain fixed in a stretched state thus, using the muscle contraction force measurement device to measure the muscle contraction force acting in the direction of rotation of the foot-accepting part makes it possible to easily and quantitatively measure spasticity.
