To perform the test, a patient is asked to hold an object, usually a flat object such as a piece of paper, between the thumb and index finger (pinch grip). The examiner then attempts to pull the object out of the subject's hands.[2]
A normal individual will be able to maintain a hold on the object without difficulty.
However, with ulnar nerve palsy, the patient will experience difficulty maintaining a hold using the adductor pollicis. They will instead use the flexor pollicis longus of the thumb to grip the paper causing a flexion of the interphalangeal joint.[3]
Froment sign is the flexion of the interphalangeal joint of the thumb rather than adduction of the entire thumb.
froment, sign, froment, sign, special, test, wrist, palsy, ulnar, nerve, specifically, action, adductor, pollicis, positive, froment, sign, below, differential, diagnosispalsy, ulnar, nerve, contents, process, examination, eponym, referencesprocess, examinatio. Froment sign is a special test of the wrist for palsy of the ulnar nerve specifically the action of adductor pollicis 1 Froment s signPositive Froment sign below Differential diagnosispalsy of the ulnar nerve Contents 1 Process of examination 2 Eponym 3 ReferencesProcess of examination editTo perform the test a patient is asked to hold an object usually a flat object such as a piece of paper between the thumb and index finger pinch grip The examiner then attempts to pull the object out of the subject s hands 2 A normal individual will be able to maintain a hold on the object without difficulty However with ulnar nerve palsy the patient will experience difficulty maintaining a hold using the adductor pollicis They will instead use the flexor pollicis longus of the thumb to grip the paper causing a flexion of the interphalangeal joint 3 Froment sign is the flexion of the interphalangeal joint of the thumb rather than adduction of the entire thumb Note that the flexor pollicis longus is nearly always innervated by the anterior interosseous branch of the median nerve Simultaneous hyperextension of the thumb MCP joint is indicative of ulnar nerve compromise This is also known as Jeanne s sign 2 Eponym editIt is named after French neurologist Jules Froment 4 5 References edit Ulnar Nerve Wheeless Textbook of Orthopaedics Retrieved 2008 01 26 a b Jeff G Konin et al Special Tests for Orthopedic Examination Third Edition Thorofare NJ SLACK Incorporated 2006 Richardson Craig and Fabre Gerd Froment s Sign Journal of Audiovisual Media in Medicine Vol 26 No 1 2003 34 synd 1970 at Who Named It Froment J 1915 La prehension dans les paralysies du nerf cubital et le signe du pouce La Presse Medicale Paris 23 409 nbsp This medical sign article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Froment 27s sign amp oldid 1203897406, wikipedia, wiki, book, books, library,
