Accessory Abductor Digiti Minimi Muscle: A Potential Cause of Ulnar Neuropathy at Wrist

Patil, Jyothsna and Kumar, Naveen and Swamy, Ravindra S and Rao, Mohandas KG and Aithal, Ashwini P and D'Souza, Melanie R (2014) Accessory Abductor Digiti Minimi Muscle: A Potential Cause of Ulnar Neuropathy at Wrist. Scholars Journal of Medical Case Reports, 2 (4). pp. 276-278. ISSN 2347-6559

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Ulnar nerve compression at wrist is manifested either pathologically due to ganglia or neoplasms, or anatomically by the presence of accessory muscles in the hypothenar region. Accessory abductor digiti minimi muscle is an additional muscle encountered rarely in the wrist; presence of which causes high risk of ulnar neuropathy. We report here a case of unilateral accessory abductor digiti minimi muscle on the right hand of an elderly male cadaver of South Indian origin. The accessory muscle had flattened origin from the distal end of deep fascia of the forearm. It then formed a rounded belly and became narrowed to pass through the Guyon’s canal to get attached into radial side of the abductor digiti minimi muscle. Knowledge of existence of additional muscles in the wrist is important for the surgeons as these often cause neuropathy and vascular thrombosis, which greatly affects the movement of the wrist.

Item Type: Article
Uncontrolled Keywords: Accessory abductor digiti minimi; Neuropathy; Guyan’s canal; Hypothenar muscles
Subjects: Medicine > MMMC Manipal > Anatomy
Depositing User: KMC Manipal
Date Deposited: 21 Jun 2014 04:46
Last Modified: 21 Jun 2014 04:46

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