Axillary Nerve Anatomy

The axillary nerve then passes medially to the surgical neck of the humerus where it divides into three terminal branches. Divides into anterior and posterior branches within the quadrangular space.

Axillary Nerve Entrapment Springerlink

Wasting of the deltoid muscle.

Axillary nerve anatomy. Paralysis of the deltoid and teres minor muscles. Its a major peripheral nerve of the arm carrying fibers from the fifth and sixth cervical vertebrae c5 and c6 which are in near the base of the neck. It emerges from the posterior cord of the brachial plexus.

Posterior circumflex humeral artery. Wraps around the surgical neck of the humerus running in the deep deltoid fascia with the posterior circumflex humeral artery. Structure the anterior branch upper branch winds around the surgical neck of the humerus.

Axillary nerve arises in the axilla from posterior cord of brachial plexus behind the third part of axillary artery. The axillary nerve which is also called the circumflex nerve emerges from the posterior cord of a network of nerves called the brachial plexus right at the level of the armpit. The posterior branch lower branch supplies the teres minor and the posterior part of the deltoid.

Posterior terminal branch provides motor innervation to the posterior aspect. Weakness of arm abduction. Mixed sensory and motor nerve.

The trunk of the. Supplies the anterior deltoid muscle. The motor branch of the long head of the triceps brachii arises on average.

Injury to the axillary nerve can result in the following. Anterior terminal branch winds around the surgical neck of the humerus. It terminates by dividing into anterior and posterior divisions.

It then runs backwards in close relation to the capsule of shoulder joint. Enters and passes backwards through the quadrangular space. The axillary nerve is a major peripheral nerve of the upper limb that originates from the brachial plexus.

Anaesthesia or loss in sensation of the area of the skin posterior to the deltoid muscle.

Anatomy Review The Brachial Plexus Functional Anatomy