GROSS ANATOMY

Detailed explanation-1: -The long thoracic nerve, also referred to as the external respiratory nerve of Bell or posterior thoracic nerve, arises from the upper portion of the superior trunk of the brachial plexus and typically receives contributions from cervical nerve roots C5, C6, and C7.

Detailed explanation-2: -The long thoracic nerve arises from the anterior rami of cervical spinal nerves C5, C6, and C7. The root from C7 may occasionally be absent. The roots from C5 and C6 pierce through the scalenus medius, while the C7 root passes in front of the muscle.

Detailed explanation-3: -These terminal branches are the musculocutaneous nerve, the axillary nerve, the radial nerve, the median nerve, and the ulnar nerve. Due to both emerging from the lateral cord the musculocutaneous nerve and the median nerve are well connected.

Detailed explanation-4: -Long Thoracic Nerve (LTN) release is a surgery performed to reduce compression on the long thoracic nerve. The LTN is a peripheralnerve (away from the spine) that originates from the cervical spine (neck bones).