Accessory abductor digiti minimi muscle causing ulnar nerve entrapment at the Guyon's canal: A case report

Guyon’s canal syndrome is a compression neuropathy of the ulnar nerve that occurs at the wrist. Compression can be caused by many conditions, such as benign tumors, repeated occupational trauma, vascular lesions, fractures of the carpal bones, rheumatoid arthritis and anomalous hypothenar muscle at Guyon's canal. Here, the authors report a case of compression neuropathy of the ulnar nerve by the accessory abductor digiti minimi muscle (AADM), one of the anomalous hypothenar muscles, at Guyon's canal. The case report is accompanied by a literature review.

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Ulnar nerve entrapment in Guyon’s canal caused by a ganglion cyst: two case reports and review of the literature

European Journal of Orthopaedic Surgery & Traumatology ◽

10.1007/s00590-019-02461-z ◽

2019 ◽

Vol 29 (7) ◽

pp. 1565-1574 ◽

Cited By ~ 1

Author(s):

Stylianos Tottas ◽

Ioannis Kougioumtzis ◽

Zafeiria Titsi ◽

Athanasios Ververidis ◽

Konstantinos Tilkeridis ◽

...

Keyword(s):

Ulnar Nerve ◽

Ganglion Cyst ◽

Case Reports ◽

Nerve Entrapment ◽

Review Of The Literature ◽

Guyon’S Canal ◽

Ulnar Nerve Entrapment ◽

Guyon's Canal

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Surgical management of Guyon's canal syndrome, an ulnar nerve entrapment at the wrist: report of two cases

Arquivos de Neuro-Psiquiatria ◽

10.1590/s0004-282x2001000100022 ◽

2001 ◽

Vol 59 (1) ◽

pp. 106-111 ◽

Cited By ~ 22

Author(s):

Paulo Henrique Aguiar ◽

Edson Bor-Seng-Shu ◽

Fernando Gomes-Pinto ◽

Ricardo Jose de Almeida- Leme ◽

Alexandre Bruno R. Freitas ◽

...

Keyword(s):

Surgical Technique ◽

Ulnar Nerve ◽

Ulnar Artery ◽

Nerve Entrapment ◽

Guyon’S Canal ◽

Ulnar Nerve Entrapment ◽

Anatomical Classification ◽

Common Causes ◽

Guyon's Canal ◽

Canal Syndrome

Guyon's canal syndrome, an ulnar nerve entrapment at the wrist, is a well-recognized entity. The most common causes that involve the ulnar nerve at the wrist are compression from a ganglion, occupational traumatic neuritis, a musculotendinous arch and disease of the ulnar artery. We describe two cases of Guyon's canal syndrome and discuss the anatomy, aetiology, clinical features, anatomical classification, diagnostic criteria and treatment. It is emphasized that the knowledge of both the surgical technique and anatomy is very important for a satisfactory surgical result.

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ULNAR NERVE COMPRESSION AT GUYON'S CANAL BY AN ANOMALOUS ABDUCTOR DIGITI MINIMI MUSCLE: THE ROLE OF ULTRASOUND IN CLINICAL DIAGNOSIS

Hand Surgery ◽

10.1142/s0218810403001819 ◽

2003 ◽

Vol 08 (02) ◽

pp. 271-275 ◽

Cited By ~ 26

Author(s):

Paul Harvie ◽

Neel Patel ◽

Simon J. Ostlere

Keyword(s):

Ulnar Nerve ◽

Clinical Diagnosis ◽

Nerve Compression ◽

Guyon’S Canal ◽

Anatomical Structures ◽

Ulnar Nerve Compression ◽

Abductor Digiti Minimi ◽

Guyon's Canal ◽

Abductor Digiti Minimi Muscle

Anomalous variations of abductor digiti minimi are commonly found at Guyon's canal but rarely cause ulnar nerve compression. We report such a case with particular emphasis on the effectiveness of ultrasound to detect and delineate anatomical structures in this region.

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