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....

Ulnar nerve lesions at the elbow can usually be recognized by a characteristic combination of physical signs. In the hand, there is wasting and weakness of ulnar-innervated muscles with or without sensory loss of appropriate distribution; in the forearm there is often weakness of the ulnarinnervated portion of the flexor digitorum profundus and sometimes of the flexor carpi ulnaris. Further con...

Anterior, subcutaneous ulnar nerve transposition decompresses the ulnar nerve and, by transposing anterior to the medial epicondyle, eliminates longitudinal traction forces applied to the nerve during elbow flexion. This article reviews the indications and contraindications of the technique and describes the surgical technique in detail.

OBJECTIVES To compare the nerve cross sectional areas (CSA) of patients with RA without any sign of peripheral neuropathy to healthy controls. METHODS Clinical, electrophysiological and sonographic assessments were done by three blinded researchers. The patients who had an electrodiagnostic or clinical of peripheral neuropathy were excluded from the study. Nerve CSA were measured in various l...

nterneural communications in the upper extremity have been described in various schemes. They have remained, however, the subject of diagnostic, anatomical, and neu-rophysiologic interest and have seldom related directly to clinical decision making. In this report, we describe the case of a patient who, despite typical clinical complaints of carpal tunnel syndrome , did not manifest any of the ...

This study describes the characteristics of a fascia overlying the ulnar nerve for 10 cm distal to the midpoint of the retrocondylar groove. A total of 28 cadaver upper extremities were dissected. The ulnar nerve between the flexor carpi ulnaris and flexor digitorum profundus was traced distally underneath a thin fascia. The length of the fascia was measured and examined for the presence of seg...

Our previous studies have shown that median and ulnar nerve lesion induced calbindin (CB) immunoreactivity in some injured motoneurons in developing rats. Motoneuron death induced by sciatic nerve transection in neonatal rats has been related to induction of neuronal isoform of nitric oxide synthase (nNOS). The present study investigated whether expression of CB and nicotinomid adenin dinucleot...