Items tagged “nerve”
18 results found
Article
Abducens nerve
The abducens nerve is the sixth cranial nerve (CN VI). It is a motor nerve responsible for abduction of the eye (TA: nervus abducens or nervus cranialis VI). It courses from the abducens nucleus, located in the dorsal pons, up to the cavernous sinus, via a long cisternal segment that is prone to...
Article
Arnold's nerve
Arnold's nerve, also known as the auricular branch or mastoid branch, of the vagus nerve (CN X) is a small sensory nerve supplying the skin of the external acoustic meatus.
Terminology
The greater occipital nerve has also been known in the past - confusingly - as the nerve of Arnold.
The use...
Article
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 achieved by deposition of local anesthetic between the prevertebral fascia and longus...
Article
Bifid median nerve
A bifid median nerve is an uncommon anatomical variation in the forearm and has an increased association with a persistent median artery 4.
Epidemiology
It has an incidence of 9-19% 4. A persistent median artery is present in approximately half of those with a bifid median nerve 4.
Gross anat...
Article
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...
Article
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...
Article
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...
Article
Superficial peroneal nerve
The superficial peroneal nerve, also known as superficial 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 a...
Article
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...
Article
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...
Case
Carpal tunnel syndrome
Published
07 Oct 2015
97% complete
Ultrasound
Case
Peripheral nerve sheath tumor of the sciatic nerve
Published
24 Nov 2015
80% complete
MRI
Article
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...
Case
Radial nerve anatomy (illustrations)
Published
10 May 2016
32% complete
Diagram
Annotated image
Article
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...
Article
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...
Case
Basivertebral nerve illustration
Published
25 Feb 2023
41% complete
Diagram
Article
Greater occipital nerve block (ultrasound-guided)
A greater occipital nerve block is a diagnostic and/or therapeutic procedure in which the medial, sensory branch from the second cervical spinal nerve is targeted with local anesthesia.
Indications
occipital neuralgia
migraine
post-dural puncture headache
cluster headache
Contraindicatio...
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