Indications Laceration or other surgically treated lesion of the volar or dorsal surface of the ulnar (medial) half of the hand, including the little finger and ulnar half of the ring finger * Ring removal from the little finger or ring finger A nerve block has advantages over local anesthetic infiltration because it can cause less pain (eg, in palmar skin repair) and does not distort tissue * To anesthetize the entire palm, also do a median nerve block.