A 23-year-old woman comes to the office because of reduced movement of her right hand. Her hand takes a claw-like appearance even when relaxed. She has noticed a hollowed-out area between the thumb and forefinger. Physical examination shows hyper-extension of her metacarpo-phalangeal joints with flexion of the distal and proximal interphalangeal joints of the 4th and 5th fingers. Which of the following is the most likely diagnosis?

Ulnar claw | Osmosis

An ulnar claw is an abnormal hand position that develops due to a problem with the ulnar nerve. A hand in ulnar claw position will have the fourth and fifth fingers drawn towards the back of the hand at the first knuckle and curled towards the palm at the second and third knuckles.

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Ulnar claw

Pathology

Nervous system

Thrive this back to school season with 50% off Osmosis! ﻿Offer ends August 12 @ 11:59 PM PT.

Questions or feedback?

Thrive this back to school season with 50% off Osmosis! Offer ends August 12 @ 11:59 PM PT.