Items tagged “nerve”

16 results found

Abducens nerve

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

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 ...

Median nerve

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...

Axillary nerve

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...

Musculocutaneous nerve

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 neuroma

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 neuroma

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

 Diagnosis certain
Dr Subash Thapa
Published 07 Oct 2015
97% complete

Peripheral nerve sheath tumor of the sciatic nerve

 Diagnosis almost certain
Dr Ivan Turkalj
Published 24 Nov 2015
80% complete

Pancreatic neurofibroma

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
Dr Matt Skalski
Published 10 May 2016
32% complete
DiagramAnnotated image

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...

Pharyngeal plexus

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...

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