Anterior view of the extensor carpi radialis longus muscle with bony attachments.

Lateral aspect of the wrist, showing the scaphoid bone, wrist joint, midcarpal joint, 1st carpometacarpal joint capsule, abductor pollicis brevis, and adductor pollicis muscles.

Carpal tunnel; see insert (line B) for level: HH, hook of hamate; H, hamate; C, capitate; Tz, trapezoid; Tm, trapezium. Numbers refer to structures in the area.

Transverse MRI of forearm: CV, cephalic v.; BR, brachioradialis; BV, brachial ves.; PT, pronator teres; BB, biceps brachii; R, radius; U, ulna; FDS, flex. dig. super; FCU, flex. carpi ulnaris; FDP, flex. dig. profundus; ECU, ext. carpi ulnaris; SP, supina

Anterior view of the bones of the upper limb showing muscle attachments.

Anterior view of superficial dissection of the palm with skin, superficial fascia, palmar aponeurosis, and thenar and hypothenar fasciae removed.

Transverse section through elbow joint; image to the right shows level of section.

Extensor carpi radialis brevis