The Froment’s Test is a wrist examination procedure that checks for possible ulnar nerve paralysis. The strength of the grip of the patient is checked and weakness could indicate paralysis of the ulnar nerve.
There are several variations of the Froment’s Test and the most common ones are listed below. All throughout the test, the patient needs to be awake, cooperative and comfortable.
- Patient holds a piece of paper between any two fingers of one hand. The examiner tries to remove the paper to test for the patient’s grip.
- Patient opposes the thumb and index finger. The examiner tries to pull the two fingers apart.
- Patient touches all of the five fingers together to form a cone around the examiner’s finger. The examiner tests the strength of the grip.
Positive Froment’s Test
There is positive Froment’s Test when the patient is unable to grip the piece of paper or perform the other exercises. Weakness could be a sign of ulnar nerve paralysis.
The earliest sign of ulnar nerve paralysis is a change in the grip position of the fingers. Usually there is a change from the regular tip-to-tip to a pad-to-pad position. An examiner should add nerve conduction velocity (NCV) in case peripheral neuropathy is considered.