Flexor slide (Inglis and Cooper). A, Incision on medial aspect of volar side of arm, beginning approximately 5 cm proximal to medial epicondyle and continuing distally to midpoint of forearm over ulna. B, Ulnar nerve is identified, protected, and released from cubital tunnel. Tendinous origins of muscles on medial epicondyle are cut, and flexor carpi ulnaris and flexor digitorum profundus muscles are completely released from medial epicondyle and ulna. C, Lacertus fibrosus is divided, along with any remaining portions of flexor muscle origin, and ulnar nerve is transposed anteriorly. SEE TECHNIQUE 72.4.