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Intermittent ulnar nerve compression due to accessory abductor digiti minimi muscle: Crucial diagnostic role of nerve ultrasound
Author(s) -
Coraci Daniele,
Luchetti Riccardo,
Paolasso Ilaria,
Santilli Valter,
Padua Luca
Publication year - 2015
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.24660
Subject(s) - medicine , rehabilitation , sports medicine , orthopedic surgery , physical therapy , surgery
Nerve entrapment is a common pathologic condition with a diagnosis that relies on clinical and neurophysiologic evaluations. Nerve entrapment can be caused by anatomic variations, such as accessory muscles. In the past, the diagnosis could only be made during surgical exploration, but recently ultrasonography (US) has allowed us to find atypical structures surrounding and compressing nerves. Among muscle variations, the accessory abductor digiti minimi (AADM) is the most common aberrant muscle in the Guyon canal, with an incidence of 22.4%