Ulnar Deviation: Move your hand towards the pinky finger. Perform 10-15 repetitions of each movement. You can also use light weights. 4. Stress Ball Squeeze: Hold a stress ball or a tennis ball in ...

wkes.eu The extensor carpi ulnaris (ECU) muscle plays a key role not only in the active movements of wrist extension and ulnar deviation but also in providing stability to the ulnar side of the wrist.