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Fig. 3 | Journal of Medical Case Reports

Fig. 3

From: A stab wound to the axilla illustrating the importance of brachial plexus anatomy in an emergency context: a case report

Fig. 3

Brachial plexus composition, neighboring structures and territory. The most proximal and distal places of the possible lesion site according to the symptomatology presented by the patient are heralded by the red and blue lines. a. Photograph of a cadaveric dissection of the left axillary region showing the brachial plexus, its terminal branches and their neighboring structures. 1, median nerve; 2, median nerve root side; 3, medial root of the median nerve; 4, ulnar nerve; 5, axillary artery; 6, axillary vein; 7, medial cutaneous nerve of the arm; 8, medial cutaneous nerve of the forearm; 9, upper trunk of the brachial plexus; 10, middle trunk of the brachial plexus; 11, lower trunk of the brachial plexus. b. Schematic drawing of the brachial plexus, roots, trunks, divisions, cords, terminal branches, and the muscles (m.) they innervate. SA, serratus anterior m.; SC, subclavius m.; R, rhomboids m.; SS, supraspinatus m.; IN, infraspinatus m.; PM, pectoralis major m.; SUSa, subscapularis m. (upper half); LD, latissimus dorsi m.; SUSb, subscapularis m. (lower half); TMj, teres major m.; D, deltoid m.; TM, teres minor m.; B, brachioradialis m.; ECR, extensor carpi radialis m.; T, triceps m.; ECU, extensor carpi ulnaris m.; EDC, extensor digitorum communis m.; EI, extensor indicis proprius m.; EPL, extensor policis longus m.; APL, abductor pollicis longus m.; SUP, supinator m.; BB, biceps brachii m.; CB, coracobrachialis m.; PRT, pronator teres m.; FCR, flexor carpi radialis m.; FPL, flexor pollicis longus m.; FDPa, flexor digitorum profundus m. [bellies for the index and middle finger]; FDS, flexor digitorum superficialis m.; APB, abductor polllicis brevis m.; OP, opponens pollicis m.; FPB, flexor pollicis brevis m.; La, first and second lumbricals m.; FCU, flexor carpi ulnaris m.; FDPb, Flexor digitorum profundus m. [bellies for the ring and small fingers]; FDIH, first dorsal interosseous m.; ADQH, abductor digiti quinti m.; Lb, third and fourth lumbricals m.; AP, adductor pollicis m.; FPB, flexor pollicis brevis m. (deep head); PB, palmaris brevis m

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