FROMENT' S

SIGN

​• ​Test positioning

The client may sit or stand.

The therapist sits next to the client.

​• Action

The client is instructed to hold a piece of paper between the thumb and index finger.

The therapist then tries to pull the paper out.

​• Positive finding

Flexion of the client's distal interphalangeal joint of the thumb is indicative of adductor pollicis muscle paralysis due to ulnar nerve damage.

​• Special considerations & comments

Simultaneous hyperextension of the metacarpophalangeal joint of the thumb is indicative of ulnar nerve compromise.

This is known as Jeanne's sign.

Froment's Sign, named after Dr. Jules Froment, was developed through his work in neurology and peripheral nerve injuries, particularly in diagnosing ulnar nerve dysfunction.