Froments sign
test for palsy of the ulnar nerve which results in reduced functionality and muscle weakness of the pinch grip. It tests the strength of the adductor pollicus of the thumb
patient is asked to make a strong pinch between the thumb and index finger and grip a flat object such as a piece of paper between the thumb and index finger. The examiner then attempts to pull the object out of the subject’s hands[3]. There is weakness of the adductor pollicus innervated by the ulnar nerve which would keep the IP joint relatively straight; instead, the FPL muscle which is innervated by the median nerve is substituted for the AP and will cause the IP joint to go into a hyperflexed position.
The flexor pollicis longus (innervated by the median nerve), will substitute for the adductor pollicis (innervated by the ulnar nerve) and cause the thumb to go into hyperflexion. Ulnar nerve palsy can be as a result of dysfunction at the cervical spine, elbow (cubital tunnel syndrome) or at the wrist (Guyons canal syndrome).
Piano keys test
positive result is indicative of dysfunction of TFCC or distal radioulnar joint instability
Phalen test
Carpal compression test
cervical compression test
craniocervical flexion test or the deep neck flexor endurance test
Tests longus colli and longus capitis deep neck flexors
apley scratch test