Numerous causes are reported for ulnar nerve compression at the wrist, known as Guyon's tunnel syndrome. In the present article, a patient with Guyon's tunnel syndrome during pregnancy concomitant with an anomaly of ulnar nerve is described. A 29-year-old Iranian woman presented with clinical features of Guyon's tunnel syndrome (pain and paresthesia in the fifth finger of the left hand and atro...

OBJECTIVE To determine the frequency and features of the arcade of Struthers, and to assess its clinical implication in ulnar nerve compression. METHOD Forty arms from 26 cadaver specimens were dissected in the Anatomy Laboratory of this institution. The extension of the arcade, distance from the medial epicondyle, and relation with ulnar nerve were recorded. RESULTS The arcade of Struthers...

We report a diabetic patient who developed skin lesions on her left forearm and ulnar nerve involvement following admission to the hospital and putting IV catheter for her treatment. Biopsy samples wee taken from her skin lesions and ulnar nerve and with further evaluation after 2 months, the diagnosis of fungal infection due to zygomycetes and mucur was considered based on the presence o...

BACKGROUND The ulnar nerve upper limb neurodynamic test (ULNT3) uses upper limb positioning to investigate symptoms arising from the ulnar nerve. It is proposed to selectively increase tension of the nerve; however, this property of the test is not well established. OBJECTIVE The aim of this study was to determine the upper limb position that results in: (1) the greatest tension of the ulnar ...

Kaplan's accessory branch is an aberrant branch of the dorsal cutaneous branch of the ulnar nerve that arises proximal to the styloid process of the ulna and courses ulnar to the pisiform. Variations of this anomaly have been described as having an end point of connection to the sensory branch of the ulnar nerve, to the motor branch of the ulnar nerve (rare), to the digital nerve at the level o...

PURPOSE Patients with ulnar neuropathy of unclear etiology occasionally present with lesion extension from elbow to upper arm level on MRI. This study investigated whether MRI thereby distinguishes multifocal neuropathy from focal-compressive neuropathy at the elbow. METHODS This prospective study was approved by the institutional ethics committee and written informed consent was obtained fro...

A 32-year-old woman presented with left wrist pain and tender mass at the wrist for 1 month. She described left 4th and 5th digit tingling which worsened with palpation of the mass. Sensory nerve action potential of the digital sensory branch of the left ulnar nerve was of low amplitude and prolonged distal latency. Motor conduction studies and needle EMG were normal. Wrist MRI (figure) showed ...

Electrophysiological studies were performed on median and ulnar nerves in 234 cases of carpal tunnel syndrome. Abnormalities of the ulnar nerve sensory action potential were found in 39·3% of cases. The amplitude of the ulnar nerve sensory action potential was related to the amplitude of the median nerve sensory action potential, and to the median nerve motor conduction velocity in the forearm....