Items tagged “nerve”
16 results found
The abducens nerve is the sixth cranial nerve. It courses from its nucleus located in the dorsal pons to its innervation of the lateral rectus muscle and can be divided into four parts: nucleus and intraparenchymal portion cisternal portion cavernous sinus portion orbital portion Gross anat...
Arnold's nerve is the eponymous name of the auricular branch, also known as the mastoid branch, of the vagus nerve (CN X). Origin and course Arnold's nerve originates from the superior ganglion of the vagus nerve and also has a small contribution from the inferior ganglion of the glossopharyng...
Stellate ganglion block
The stellate ganglion block describes blockade of the cervicothoracic sympathetic chain which provides post-ganglionic sympathetic efferents to the head, neck and upper extremities. Neural blockade is typically acheived by deposition of local anesthetic between the prevertebral fascia and longus...
Bifid median nerve
The median nerve may divide into two nerve bundles in the distal forearm and appear as a bifid median nerve in the carpal tunnel. It has an incidence of ~3%. The median nerve usually divides into two or three branches after exiting the distal edge of the transverse carpal ligament that covers ...
The median nerve is one of the five main nerves originating from the brachial plexus and provides motor and sensory innervation to parts of the forearm and hand. Summary origin lateral root: lateral cord of the brachial plexus (C5, C6, C7) medial root: medial cord of the brachial plexus (C8...
The axillary nerve is one of five terminal branches of the brachial plexus, supplying motor and sensory branches to the shoulder. Summary origin: posterior cord of the brachial plexus course: passes out of axilla through the quadrangular space to the upper arm major branches: superior later...
The musculocutaneous nerve is one of five major branches of the brachial plexus and supplies motor innervation to the arm and sensory innervation to the forearm. Gross anatomy Origin The musculocutaneous nerve is one of two terminal branches of the lateral cord of the brachial plexus (along w...
Superficial peroneal nerve
The superficial peroneal (fibular) nerve is one of two terminal branches of the common peroneal nerve. Summary origin: arises as a terminal branch of the common peroneal nerve in the lateral compartment of the leg course: passes between peroneus longus muscle and the fibula proximally and per...
Traumatic neuromas may occur from acute or chronic injury to a nerve. Clinical presentation The patient presents with a focal area of pain and tenderness to palpation. There should be a history of injury (including iatrogenic injury, i.e. surgery) to the area. They may develop 1-12 months afte...
Joplin neuromas are rare compression traumatic neuromas, involving the proper digital nerve of the great toe (a branch of the medial plantar nerve). Clinical presentation Pain and tenderness at the first digit metatarsophalangeal joint. More common in soccer players and in patients post bunion...
Carpal tunnel syndrome
Published 07 Oct 2015
Peripheral nerve sheath tumor of the sciatic nerve
Diagnosis almost certain
Published 24 Nov 2015
Pancreatic neurofibromas are rare nonepithelial neoplasms of the pancreas. They are similar to neurofibromas found elsewhere in the body, and are associated with neurofibromatosis type I. Clinical presentation If they do cause symptoms, it will typically be those related to regional mass effe...
Radial nerve anatomy (illustrations)
Diagnosis not applicable
Published 10 May 2016
Peroneal intraneural ganglion cyst
Peroneal intraneural ganglion cysts are an uncommon cause of a cystic lesion around the knee. Intraneural ganglion cysts are benign mucinous lesions have been reported in many peripheral nerves, and not uncommonly form in the common peroneal nerve. Clinical presentation These lesions can pres...
The pharyngeal plexus lies on the posterolateral wall of the pharynx, mainly over the middle pharyngeal constrictor and is the main motor and sensory nerve supply to the muscles of the pharynx and soft palate and acts to coordinate swallowing and speech 1-7. Summary location: within the extern...