medial cutaneous nerve of arm


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me·di·al cu·ta·ne·ous nerve of arm

[TA]
arises from the medial cord of the brachial plexus, unites in the axilla with the lateral cutaneous branch of the second intercostal nerve, and supplies the skin of the medial side of the arm.

me·di·al cu·ta·ne·ous nerve of arm

(mē'dē-ăl kyū-tā'nē-ŭs nĕrv ahrm) [TA]
Arises from the medial cord of the brachial plexus, unites in the axilla with the lateral cutaneous branch of the second intercostal nerve, and supplies the skin of the medial side of the arm.
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References in periodicals archive ?
INTRODUCTION: Normally the undivided lateral cutaneous branch of second intercostal nerve leaves the second intercostal space by piercing the lateral thoracic wall at midaxillary plane, passes along the base of axilla within the central group of axillary lymph nodes, reaches the upper and medial part of arm where it joins with medial cutaneous nerve of arm to form intercostobrachial nerve to supply the skin of upper and medial parts of arm.
We found the undivided lateral cutaneous branch of 2nd intercostal nerve piercing the second intercostal space at midaxillary plane, running along the base of axilla to reach the upper and medial part of arm where they join with medial cutaneous nerve of arm on each side in 29 cadavers out of 40 adult embalmed cadavers.
The upper branch passed along the base of axilla, then left the axilla by passing through lower triangular space and finally joined with posterior cutaneous nerve of arm on each side whereas the lower branch passed along the base of axilla to reach the upper and medial part of arm where they join with medial cutaneous nerve of arm on each side.
The upper branch of 1st intercostobrachial nerve passed along the base of axilla, then left the axilla by passing through lower triangular space and finally joined with posterior cutaneous nerve of arm on each side whereas the lower branch passed along the base of axilla to reach the upper and medial part of arm where they join with medial cutaneous nerve of arm on each side.
The 1st intercostobrachial nerve joined with 2nd one to form a single trunk which passed along the base of axilla and reached the upper and medial part of arm to join with medial cutaneous nerve of arm on each side.
Its size is inverse proportion to the size of medial cutaneous nerve of arm.
The first one (T2) divided into upper and lower branches to join with posterior cutaneous nerve of arm and medial cutaneous nerve of arm respectively whereas the second one (T3) originated as a single trunk and joined with medial cutaneous nerve of arm (Fig.

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