Choose the appropriate lettered site or structure in the following radiograph of the wrist and hand. Destruction of the structure indicated by the letter E most likely causes weakness of which of the following muscles?
(c) The hook of hamate and the pisiform provide insertion for the flexor carpi ulnaris.
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
Brachioradialis
Upper Extremity