Injury to the Ulnar nerve at the wrist causes paralysis of -
In low ulnar nerve palsy
-        Adducttion of thumb is lost
-        Ulnar claw hand
-        Medial one and half fingers sensory loss
-        Clumsy grip
-        Loss of flexion at metacarpophalangeal joints.
Apposition of the thumb
Abduction of the carpo-metacarpal joint of the thumb
Adduction of the thumb
Flexion of the MCP joint of the middle finger