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The great auricular nerve is a large trunk that ascends almost vertically over the sternocleidomastoid. [2] It winds around the posterior border of the sternocleidomastoid muscle, then perforates the deep fascia before ascending alongside the external jugular vein upon that sternocleidomastoid muscle beneath the platysma muscle to the parotid gland. [1]
However, a recent study using ultrasound to follow the spread of local anesthetic demonstrated an improved success rate of the block (relative to blocks done with nerve stimulator alone) even at the inferior roots of the plexus. [2] For supraclavicular block, nerve stimulation with a minimal threshold of 0.9 mA can offer a dependable block. [11]
The posterior auricular nerve arises from the facial nerve (CN VII). [1] It is the first branch outside of the skull. [2] This origin is close to the stylomastoid foramen. It runs upward in front of the mastoid process. It is joined by a branch from the auricular branch of the vagus nerve (CN X).
The auriculotemporal nerve arises from the posterior division of [2]: 497 the mandibular nerve (CN V 3) (which is itself a branch of the trigeminal nerve (CN V)). [3] It arises by two roots [2]: 497 that circle around either side of the middle meningeal artery [1] [2]: 363 before uniting to form a single nerve.
Nerve block or regional nerve blockade is any deliberate interruption of signals traveling along a nerve, often for the purpose of pain relief. Local anesthetic nerve block (sometimes referred to as simply "nerve block") is a short-term block, usually lasting hours or days, involving the injection of an anesthetic, a corticosteroid, and other agents onto or near a nerve.
Injury to Erb's point is commonly sustained at birth or from a fall onto the shoulder.The nerve roots normally involved are C5 and partly C6. Symptoms include paralysis of the biceps, brachialis, and coracobrachialis (through the musculocutaneous nerve); the brachioradialis (through the radial nerve); and the deltoid (through the axillary nerve).
Frey's syndrome is caused by re-routing of parasympathetic and sympathetic fibres of the auriculotemporal nerve (V3) within the otic ganglion. It is a complication of surgery involving the parotid gland whereby injury to these branches, which innervate the parotid gland and sweat glands of the face respectively, form abnormal connections.
Auricular nerve may refer to: Lesser auricular nerve , originates from the cervical plexus, composed of branches of spinal nerves C2 and C3 Posterior auricular nerve , arises from the facial nerve close to the stylomastoid foramen and runs upward in front of the mastoid process