Klumpke's paralysis from a brachial plexus injury involves which of the following nerve cords?: (A) C5, C6, (B) C6, C7, (C) C7, T1, (D) C8, T1
Answer is D. Klumpke's paralysis is a form of paralysis involving the muscles of the forearm and hand, resulting from a brachial plexus injury in which the eighth cervical (C8) and first thoracic (T1) nerves are injured either before or after they have joined to form the lower trunk.