What is the main consequence of damage to the C5-C6 nerve roots in the context of Erb's Duchenne Palsy?

The main consequence of damage to the C5-C6 nerve roots is paralysis of the arm, particularly affecting the shoulder and upper arm. This condition, known as Erb's Duchenne Palsy, results from a stretching or injury to the nerves during childbirth or trauma, leading to impairment in the motor function of muscles innervated by these nerve roots.

In Erb's Palsy, there is significant weakness in the deltoid and biceps muscles, which are crucial for shoulder abduction and elbow flexion, respectively. Individuals may exhibit a characteristic "waiter's tip" posture, where the affected arm hangs by the side and is adducted and internally rotated at the shoulder. This paralysis impacts the ability to perform everyday activities that require shoulder and arm movement.

The other options, such as loss of sensation in the lower limb or weakness in the hip flexors, are not consequences of C5-C6 nerve root damage, as these regions are innervated by different nerve roots. Similarly, restricted movement of the neck is unrelated, considering that the cervical nerves that affect neck movement are not primarily within the C5-C6 root territory. Thus, recognizing the specific areas affected by the C5-C6 roots is crucial for understanding