Which block would provide analgesia for the area distal to the elbow?

• A. Intercostal block
• B. Sciatic nerve block
• C. Femoral nerve block
• D. Brachial plexus block

Answer: (D)

Targeting nerves of the upper limb through a brachial plexus block provides sensory and, often, motor blockade to the entire forelimb distal to the elbow. The brachial plexus carries the nerves (including radial, median, ulnar, and musculocutaneous) that innervate the forelimb from shoulder to paw. Depositing local anesthetic around this plexus blocks these nerves, giving analgesia to the forelimb area beyond the elbow.

The other options cover different regions: intercostal blocks numb the chest wall, while sciatic and femoral blocks numb parts of the hind limb. Hence they would not provide analgesia to the area distal to the elbow.