ANATOMY OF THE ELBOW AND FOREARM Medial cutaneous nerve of forearm Biceps brachii muscle Ulnar nerve Brachial artery and median nerve Triceps brachii muscle Medial intermuscular septum Triceps brachii muscle Lateral cutaneous nerve of forearm (terminal musculocutaneous nerve) Ulnar artery Brachialis muscle Medial epicondyle of humerus Biceps brachii tendon Radial artery Common flexor tendon Brachioradialis muscle Bicipital aponeurosis Pronator teres muscle Extensor carpi radialis longus muscle Superior ulnar collateral artery Flexor carpi (anastomoses distally with Brachioradialis muscle Ulnar nerve radialis muscle posterior ulnar recurrent artery) Extensor carpi Medial epicondyle radialis longus muscle Palmaris longus of humerus Common extensor tendon muscle Superficial Flexor carpi Extensor carpi flexor Extensor carpi radialis brevis muscle ulnaris muscle radialis brevis muscle muscles Olecranon of ulna Extensor digitorum muscle Flexor digitorum Anconeus muscle superficialis muscle Flexor pollicis longus Palmaris longus tendon Flexor carpi ulnaris muscle Extensor digiti minimi muscle muscle and tendon Dorsal branch of ulnar nerve Radial artery Extensor carpi ulnaris muscle Ulnar artery and nerve Abductor pollicis longus muscle Median nerve Flexor digitorum superficialis tendon Palmar carpal ligament Pisiform Extensor pollicis brevis muscle (continuous with extensor retinaculum) Palmar branch of median nerve Thenar muscles Hypothenar muscles Extensor pollicis longus tendon Extensor carpi radialis brevis tendon Extensor carpi radialis longus tendon Palmar aponeurosis Extensor retinaculum Superficial branch of radial nerve (compartments numbered) 1 Abductor pollicis longus tendon 2 Dorsal branch of ulnar nerve 4 3 Extensor pollicis brevis tendon 65 Extensor pollicis longus tendon Extensor carpi ulnaris tendon Anatomic snuffbox Extensor digiti minimi tendon Muscles of the Anterior Forearm Extensor digitorum tendons Extensor indicis tendon 5th metacarpal bone Muscles of the Posterior Forearm Right elbow Humerus Humerus Humerus Radius Humerus Condyle Medial Lateral Medial supracondylar ridge Lateral Coronoid supracondylar ridge fossa Olecranon fossa Lateral view in extension Radial fossa Ulna Medial Medial view in extension Lateral epicondyle epicondyle Lateral epicondyle Humerus Capitellum Trochlea Lateral epicondyle Humerus Head Olecranon Capitellum Medial epicondyle Coronoid Neck Groove for Capitellum process Head Head ulnar nerve Trochlea Neck Tuberosity Radial notch of ulna Neck Head Tuberosity Tuberosity Neck Tuberosity Tuberosity Radius Ulna Ulna Radius Radial notch Tuberosity Coronoid process of ulna Coronoid process Trochlear notch Anterior View Posterior View Olecranon Trochlear notch in extension in extension Olecranon Lateral view in 90° flexion Medial view in 90° flexion Bones of the Elbow Joint 342 ESSENTIALS OF MUSCULOSKELETAL CARE ■ © 2010 AMERICAN ACADEMY OF ORTHOPAEDIC SURGEONS.