GROSS ANATOMY

Detailed explanation-1: -The signs of Erb’s palsy include loss of sensation in the arm and paralysis and atrophy of the deltoid, biceps, and brachialis muscles. “The position of the limb, under such conditions, is characteristic: the arm hangs by the side and is rotated medially; the forearm is extended and pronated.

Detailed explanation-2: -Erb’s palsy affects the shoulder, arm and elbow. In general, your hand muscles aren’t affected, but your hands may experience tingling or numbness. Signs and symptoms of Erb’s palsy include: Paralysis or limpness of the shoulder, arm and elbow.

Detailed explanation-3: -Erb’s palsy is initially frightening. The infant’s arm hangs limply from the shoulder with flexion of the wrist and fingers due to weakness of muscles innervated by cervical roots C5 and C6. Risk factors are macrosomia (large baby) and shoulder dystocia. However, Erb’s palsy may occur following cesarian section.

Detailed explanation-4: -A severe upper-trunk injury may paralyze the shoulder muscles (deltoid muscle and rotator cuff), as well as the muscle in the upper arm (biceps.) When a fall forces the shoulder down and the head to the opposite side, upper-trunk palsy can result. This illustration shows a left plexus.

Detailed explanation-5: -Brachial plexus palsy is weakness or paralysis in parts of the arm as a result of significant injury to the brachial plexus, which can happen during childbirth. The most common type of brachial plexus palsy is called Erb’s palsy. Brachial plexus palsy may be caused during childbirth.