Objective: To establish the normal electrophysiological data for the median, ulnar and radial nerves and to compare our results with the Western data published in the literature. Methods: Nerve conduction studies were performed prospectively in the upper limbs of 50 carefully screened healthy individuals between the ages of 16 and 56 years using standardized technique. Results: The median motor...

BACKGROUND Nerve conduction study assesses peripheral nerve functions and has clinical implication. OBJECTIVES To study the effect of age on nerve conduction study variables in healthy adults. METHODS Cross sectional study was done from Jan 2006 to Dec 2006 in department of Physiology, BP Koirala Institute of Health Sciences, Dharan, Nepal. The study was done in 34 (younger, n= 18, 17 to 29...

This article introduces a new approach of selective neural electrical stimulation of the upper limb nerves. Median and radial nerves of individuals with tetraplegia are stimulated via a multipolar cuff electrode to elicit movements of wrist and hand in acute conditions during a surgical intervention. Various configurations corresponding to various combinations of a 12-poles cuff electrode conta...

BACKGROUND Lesions in peripheral nerves are highly prevalent in the upper extremity. The present study compares different tendon transfer surgeries in patients with radial nerve palsy. METHODS Fifty patients with radial nerve palsy were randomly selected among patients who referred to Tehran 15th Khordad Hospital during 2006-2011. They were divided into two groups of 17 and 33 subjects. Sing...

OBJECTIVE We studied whether distal peripheral nerves could be imaged using quantitative diffusion tensor imaging (DTI) with a 3-T MRI scanner, and visualized using tractography. METHODS Altogether 6 healthy subjects were studied. The diffusion was quantified with apparent diffusion coefficient (ADC) and fractional anisotropy (FA) maps, and the direction of main diffusivity was visualized wit...

PURPOSE The aim of this study is to apply combination of axillary plexus block with "selective" injection of nerves and continuous catheter technique, and to compare the anesthetic and postoperative analgesic effects of bupivacaine and levobupivacaine. METHODS In 30 scheduled patients for unilateral hand or forearm surgery, an axillary brachial plexus block with "selective" injection of nerve...

The ultrastructure of the anterior body region of the free-living marine nematode Deontostoma calilornicum was studied by electron microscopy. The body wall consists of a nine-layered cuticle, a cellular hypodermis containing eight nerve bundles, and a well-developed coelomyarian somatic musculature. Nerves in the dorsal, lateral, ventral, and submedian hypodermal chords anterior to the nerve r...

OBJECTIVES The influence of regular and intense practice of an asymmetric sport such as tennis on nerves in the elbow region was examined. METHODS The study included 21 male elite tennis players with a mean (SD) age of 27.5 (1.7) years and 21 male non-active controls aged 26.4 (1.9) years. Anthropometric measurements (height, weight, limb length, and perimeters of arm and forearm) were determ...

INTRODUCTION This study was aimed to compare the axillary approach performed through multiple injection method and vertical infraclavicular approach performed through single injection method in terms of the sensory and motor block onset, quality, and extent of blocks of brachial plexus in uremic patients who underwent arteriovenous fistula surgery. METHODS Forty patients scheduled for creatio...

In developing peripheral nerves, differentiating Schwann cells sort individual axons from bundles and ensheath them to generate multiple layers of myelin. In recent years, there has been an increased understanding of the extracellular and intracellular factors that initiate and stimulate Schwann cell myelination, together with a growing appreciation of some of the signaling pathways involved. H...