Somatosensory signals undergo substantial modulation in the dorsal column nuclei. We examined transmission of signals from forelimb afferents in primate cuneate and external cuneate nuclei. In anesthetized macaque monkeys, the median, ulnar, deep radial, and superficial radial nerves were electrically stimulated at 1.5-2× motor threshold with independent Poisson trains whereas extracellular rec...

Several case reports on variations of the brachial plexus have been reported in the literature. These reports provide valuable information for understanding the clinical signs related to neuropathy of varying origins. The authors of this report present a case that involved all the terminal branches of the brachial plexus and the axillary artery in a cadaver used for routine teaching practice. F...

The hand can be anesthetized effectively with blocks of the median, ulnar, or radial nerve. Each digit is supplied by four digital nerves, which can be blocked with injections on each side of the digit. Anterior or posterior ankle blocks can be used for regional anesthesia for the foot. The anterior ankle block, which is used for procedures on the dorsum of the foot, involves blocking the saphe...

During routine dissection for the undergraduate medical students, we encountered an unusual, additional muscle in the anterior compartment of the forearm. This muscle took origin from the anterior surface of the radius in common with the flexor digitorum superficialis muscle. It had a tendon of origin and a tendon of insertion. Its fleshy radial belly and the tendon of insertion, crossed superf...

Variations of the brachial plexus and median nerve relationships with axillary artery may be significant to anatomists, radiologists, anesthesiologists, surgeons. In some cases, coexistence anatomical variations nerves vessels also a source conflict between individual structures, e.g., entrapment neuropathy due atypical (superficial nerve) course artery. The presented report describes coexistin...

The prominence of the hand function is underlined fundamentally by its rich vascular system. The superficial palmar arch incredibly provides hand with the blood supply, which is normally formed by the ulnar artery and superficial palmar branch of the radial artery. In the current case, the unilateral absence of superficial palmar arch with the rare presence of the median artery was reported, wh...

We report a case of a 29-year-old man who presented with a distal humeral shaft fracture sustained by blunt trauma. Physicalexamination and nerve conduction study were consistent with injury to the median and radial nerves proximal to theelbow. The patient underwent open reduction and internal fixation of the humeral shaft fracture with neurolysis of the medianand radial nerves. Repeat electrom...

INTRODUCTION SPOAN (spastic paraplegia, optic atrophy, and neuropathy) syndrome is an autosomal recessive neurodegenerative disorder identified in a large consanguineous Brazilian family. METHODS Twenty-seven patients with SPOAN syndrome (20 women), aged 4-58 years, underwent nerve conduction studies (NCS) of the median, ulnar, tibial, and fibular nerves, and sensory NCS of the median, ulnar,...