Claw hand
Ulnar nerve palsy - claw hand; Ulnar nerve dysfunction - claw hand; Ulnar clawClaw hand is a condition that causes curved or bent fingers. This makes the hand appear like the claw of an animal.
Considerations
Someone can be born with claw hand (congenital), or they can develop it because of certain disorders, such as a nerve injury.
Causes
Causes may include:
- Congenital abnormality
- Genetic diseases, such as from Charcot-Marie-Tooth disease
Charcot-Marie-Tooth disease
Charcot-Marie-Tooth disease is a group of disorders passed down through families that affect the nerves outside the brain and spine. These are calle...
Read Article Now Book Mark Article -
Nerve damage in the arm
Nerve damage
Ulnar nerve dysfunction is a problem with one of the nerves that travel from the shoulder to the hand, called the ulnar nerve. It helps you move you...
Read Article Now Book Mark Article - Scarring after a severe burn of the hand or forearm
- Rare infections, such as leprosy
Leprosy
Leprosy is a disease caused by the bacterium Mycobacterium leprae. This disease causes skin sores, nerve damage, and muscle weakness that gets worse...
Read Article Now Book Mark Article
When to Contact a Medical Professional
If the condition is congenital, it is usually diagnosed at birth. If you notice claw hand developing, contact your health care provider.
What to Expect at Your Office Visit
Your provider will examine you and look closely at your hands and feet. You will be asked questions about your medical history and symptoms.
The following tests may be done to check for nerve damage:
- Electromyography (EMG) to check the health of the muscles and the nerves that control the muscles
EMG
Electromyography (EMG) is a test that checks the health of the muscles and the nerves that control the muscles.
Read Article Now Book Mark Article -
Nerve conduction studies to check how fast electrical signals move through a nerve
Nerve conduction studies
Nerve conduction velocity (NCV) is a test to see how fast electrical signals move through a nerve. This test is done along with electromyography (EM...
Read Article Now Book Mark Article
Treatment depends on the cause. It may include:
- Splinting
- Surgery to fix problems that may be contributing to the claw hand, such as nerve or tendon problems, joint contractures, or scar tissue
Joint contractures
A contracture develops when the normally stretchy (elastic) tissues are replaced by nonstretchy (inelastic) fiber-like tissue. This tissue makes it ...
Read Article Now Book Mark Article - Tendon transfer (graft) to allow movement of the hand and wrist
- Hand therapy to straighten the fingers
References
Davis TRC. Tendon transfers for median, radial, and ulnar nerve palsy. In: Wolfe SW, Pederson WC, Kozin SH, Cohen MS. Green's Operative Hand Surgery. 68h ed. Philadelphia, PA: Elsevier; 2022:chap 31.
Feldscher SB. Therapy management of tendon transfers. In: Skirven TM, Osterman AL, Fedorczyk JM, Amadio PC, Feldscher SB, Shin EK, eds. Rehabilitation of the Hand and Upper Extremity. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 44.
Sapienza A, Green S. Correction of the claw hand. Hand Clin. 2012;28(1):53-66. PMID: 22117924 pubmed.ncbi.nlm.nih.gov/22117924/.
Review Date: 9/20/2022
Reviewed By: C. Benjamin Ma, MD, Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery, San Francisco, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.