What does the medial cutaneous nerve of the arm innervate?

[1] Specifically, the medial antebrachial cutaneous nerve provides sensory innervation of the medial forearm as well as the skin overlying the olecranon. [2] It emerges from the medial cord of the brachial plexus and has sensory cell bodies located in C8 and T1.

What muscles does the cutaneous nerve innervate?

The musculocutaneous nerve innervates the three muscles of the anterior compartment of the arm: the coracobrachialis, biceps brachii, and brachialis. It is also responsible for cutaneous innervation of the lateral forearm.

What nerve innervates the skin of the arm?

Medial Antebrachial Cutaneous Nerve



This cutaneous nerve branches from the medial cord of the brachial plexus with C8 and T1 contribution. It passes down the anteromedial side of the upper arm and innervates a portion of the cutaneous skin over the anterior upper arm, specifically the skin overlying the biceps brachii.

What does the anterior cutaneous nerve innervate?

They include the lateral femoral cutaneous nerve (L2-L3), posterior femoral cutaneous nerve (S1–S3) and the anterior femoral cutaneous nerves (L2–L4). The main function of these nerves is to provide cutaneous innervation to most of the skin of the thigh, knee, and proximal leg.

What does the median nerve innervate?

The median nerve predominantly provides motor innervation to the flexor muscles of the forearm and hand as well as those muscles responsible for flexion, abduction, opposition, and extension of the thumb.

What nerve Innervates shoulder flexion?

The musculocutaneous nerve

The musculocutaneous nerve supplies three upper arm muscles that produce flexion of the arm at the elbow (biceps, brachialis, and coracobrachialis) and a sensory branch that supplies the skin of the lateral side of the anterior forearm.

What is the function of the cutaneous nerve?

Cutaneous nerve fibers have sensory functions, control the vasomotor tonus, and regulate the secretory activities of glands. They also exert a number of important functions, including the modulation of multiple inflammatory, proliferative, and reparative cutaneous processes.

What nerve innervates the lateral arm?

The inferior lateral cutaneous nerve of arm is a nerve found in humans and other animals. It is also called the inferior lateral brachial cutaneous nerve. It is a branch of the radial nerve that provides sensory and vasomotor innervation to the lower, lateral aspect of the arm.

What are the 5 major nerve Innervations of shoulder arm?

The fifth and final level of the brachial plexus are the five nerves that feed the shoulder and arm called “branches.” These five branches are named the musculocutaneous, axillary, radial, median, and ulnar nerves.

What does medial cutaneous nerve of forearm supply?

The medial cutaneous nerve of the forearm, also known as the medial antebrachial cutaneous nerve, is a branch of the medial cord of the brachial plexus and supplies the anterior and medial aspects of the forearm as far distal as the wrist.

What is the difference between Dermatomes and cutaneous innervation?

Cutaneous innervation refers to the area of the skin which is supplied by a specific cutaneous nerve. Dermatomes are similar; however, a dermatome only specifies the area served by a spinal nerve.

Are dermatomes cutaneous innervation?

A dermatome is a kind of cutaneous innervation, but it specifically refers to an area that is supplied by a single spinal nerve.

How do you remember cutaneous innervation of upper limb?

Quote from video:
Side of the arm. And this part is innervated by c5 and c6 root value also lower lateral of the arm is also innervated by c5 and c6 also latter half of the forearm is innervated by c5 and c6 root.

What is a cutaneous peripheral nerve?

A CUTANEOUS NERVE supplies an area of the skin that is related to a peripheral nerve. Note that any cutaneous nerve may contain fibers from several individual spinal nerves. Therefore, cutaneous nerve areas and dermatome areas show much overlapping.

Where are the cutaneous nerves?

Quote from video:
The lateral cutaneous nerve of the arm or the lateral cutaneous brachial nerve is a branch of the radial nerve. And the radial nerve. Is from the posterior cord of the brachial plexus.

What does the posterior femoral cutaneous nerve innervate?

Via its numerous collateral branches, the posterior femoral cutaneous nerve innervates a very extensive territory including the posterior surface of the thigh, the infragluteal fold, the skin over the ischial tuberosity, but also the lateral anal region, scrotum or labium majus via its perineal branch.

What does the lateral femoral cutaneous nerve do?

The lateral femoral cutaneous nerve branches off the lumbar plexus, a network of nerves that connects the spinal cord in the lower back with the motor and sensory nerves of the legs and lower body. It provides sensation to the front and sides of the thigh. This is a pure sensory nerve and does not operate any muscles.

What are the signs and symptoms of lateral femoral cutaneous nerve entrapment?

Meralgia paresthetica (also known as lateral femoral cutaneous nerve entrapment) is a condition characterized by tingling, numbness and burning pain in your outer thigh. It’s caused by compression of the nerve that provides sensation to the skin covering your thigh.

How do you relieve pressure on the lateral femoral cutaneous nerve?

In more severe cases, corticosteroid injections or injectable pain medications may relieve symptoms. Rarely, surgery is necessary to correct any compression on the lateral femoral cutaneous nerve. Surgery is usually only recommended for people who try other treatments but still experience symptoms.

How do you decompress lateral femoral cutaneous nerve?

Procedure for Lateral Femoral Cutaneous Nerve Decompression



An incision is made in a lateral fashion on the affected side using loupe magnification (a device used to see small details more closely). The underlying muscles are carefully separated to expose the lateral femoral cutaneous nerve in the upper thigh area.