Which injury is associated with lack of movement and gripping action in the affected limb?

In the context of neonatal and pediatric care, Erb-Duchenne palsy is a result of an injury to the upper trunk of the brachial plexus, which often occurs during birth, particularly in cases of shoulder dystocia. This type of injury affects the nerve roots C5 and C6, which are responsible for innervating the muscles that allow for movement and gripping action of the affected limb, typically the arm on the side of the injury.

Individuals with Erb-Duchenne palsy usually present with an arm that is adducted and internally rotated at the shoulder, with the elbow extended, leading to a characteristic "waiter's tip" posture. This physical presentation corresponds to the paralysis of muscles such as the deltoid, biceps, and brachialis, all of which are essential for lifting the arm and grasping actions. Consequently, the lack of movement and grip in the affected limb is a prominent clinical feature associated with this injury.

This understanding is crucial for healthcare providers involved in the management of neonatal injuries, as it guides both diagnostic processes and therapeutic interventions tailored to the specific needs of the child. Recognition of these symptoms allows for timely and appropriate rehabilitation strategies to promote recovery of function in the affected limb.