Patent ID: 8002717

Claim:
A system operable to evaluate spasticity in a movable extremity, said system comprising: a fixation device comprising a first part connected via a movable joint to a second part, the fixation device being operable to fix said movable extremity in such a way that the rotational axis of said fixation device is aligned with the rotational axis of the joint of the movable extremity, a moving device operable to move said second part with a first, constant velocity (V 1 ) without any reflex contribution, and with a second, constant velocity (V 2 ) with reflex contribution, a force sensor operable to measure a first force trace in connection with said first velocity (V 1 ), and a second force trace in connection with said second velocity (V 2 ), a processor means connected to said force sensor and operable to extract three resistance measurements from the first and second force traces, the three resistance measurements being a first point (P 1 ) and second maximum point (P 2 ) extracted from said second force trace, and a third point (P 3 ) extracted from said first force trace, the three points (P 1 , P 2 and P 3 ) being used to evaluate spasticity based on non-neural contributions to passive movement resistance being reflected in (P 1 ) and (P 3 ) and neural contributions to passive movement resistance being reflected in (P 2 ).