Organization of the Upper Limb Robert S Staron

Organization of the Upper Limb Robert S. Staron, Ph. D. Summer Anatomy Immersion

Gray’s Anatomy 37 th ed Grant’s Atlas of Anatomy 8 th

Grant’s Atlas 8 th ed Grant’s Atlas of Anatomy 8 th

Antr division: flexor comp. Postr division: ext comp. Netter’s Atlas of Human Embryology 2002

Muscle Compartments of the Upper Limb radial n. (including a portion of the brachialis m. ) Anterior Grant’s Dissector 13 th ed musculocutaneous n. Humerus Posterior Anterior median n. & ulnar n. Radius Ulna radial n. (including ECRL & brachioradialis mm. ) Posterior Anterior ulnar n. & median n. 5 th metacarpal Posterior

Origin of Limb Muscles n n Carlson l 999 Dorsal muscle mass forms extensors and supinators in upper limb, extensors and abductors in lower limb. Ventral muscle mass forms flexors and pronators in upper limb and flexors and adductors in lower limb. Morphogenesis guided by CT, not myoblasts Split into individual muscles, cell death involved Human Embryology Larsen

Hollinshead’s Textbook of Anatomy 5 th

Grant’s Dissector 13 th ed

21. Rohen/Yokochi Color Atlas of Anatomy 2 nd

Brachial Plexus Netter’s Atlas 2 nd ed

hand – forearm – shoulder distal proximal Grant’s Atlas of Anatomy 8 th

Extrinsic shoulder mm. Intrinsic shoulder mm. 1) trapezius m. 1) infraspinatus m. 2) latissimus dorsi m. 2) supraspinatus m. 3) levator scapulae m. 3) subscapularis m. 4) rhomboideus major m. 4) teres minor m. 5) rhomboideus minor m. 5) teres major m. 6) serratus anterior m. 6) deltoid m. Anterior thorax mm. 1) pectoralis major and minor mm. 2) subclavius m.

Extrinsic shoulder mm. 1) trapezius m. (spinal accessory n. - CN XI + C 3 & C 4) 2) latissimus dorsi m. (thoracodorsal n. - C 6, C 7, C 8) 3) levator scapulae m. (C 3 & C 4 + dorsal scapular n. - C 5) 4) rhomboideus major m. (dorsal scapular n. - C 5) 5) rhomboideus minor m. (dorsal scapular n. - C 5) 6) serratus anterior m. (long thoracic n. - C 5, C 6, C 7) Anterior thorax mm. med/lat 1) pectoralis major ( C 5 -T 1) & minor (C 6 -C 8) mm. pect nn. 2) subclavius m. (n. to subclavius m. - C 5, C 6)

Grant’s Atlas 8 th ed Grant’s Atlas of Anatomy 8 th

Netter’s Atlas of Human Anatomy 2 nd ed

Netter’s Atlas 2 nd ed

Intrinsic shoulder mm. 1) infraspinatus m. (suprascapular n. - C 5, C 6) 2) supraspinatus m. (suprascapular n. - C 5, C 6) 3) subscapularis m. (upper + lower subscapular nn. - C 5, C 6) 4) teres minor m. (axillary n. - C 5, C 6) 5) teres major m. (lower subscapular n. - C 5, C 6) 6) deltoid m. (axillary n. - C 5, C 6)

Grant’s Atlas 8 th ed Grant’s Atlas of Anatomy 8 th

Netter’s Atlas of Human Anatomy 2 nd ed

rotator cuff musculature Netter’s Atlas 2 nd ed

Muscle Compartments of the Upper Limb - arm radial n. (including a portion of the brachialis m. ) Anterior Grant’s Dissector 13 th ed musculocutaneous n. Humerus Posterior Anterior median n. & ulnar n. Radius Ulna radial n. (including ECRL & brachioradialis mm. ) Posterior Anterior ulnar n. & median n. 5 th metacarpal Posterior

Grant’s Dissector 13 th ed

brachium antr compartment postr compartment biceps brachii m. long head short head n brachialis m. n coracobrachialis m. n n triceps brachii m. lateral head medial head long head n anconeus m.

musculocutaneous n. (C 5 -C 7) biceps brachii m. (C 5, C 6) brachialis m. (C 5, C 6) coracobrachialis m. (C 5 C 7) Netter’s Atlas of Human Anatomy 2 nd ed

axillary n. (C 5 -C 6) deltoid m. (C 5, C 6) teres minor m. (C 5, C 6) radial n. (C 5 -T 1) triceps brachii m. (C 6 C 8) anconeus m. (C 7, C 8) (brachialis m. C 5, C 6) Netter’s Atlas of Human Anatomy 2 nd ed

Grant’s Dissector 13 th ed

Muscle Compartments of the Upper Limb - forearm radial n. (including a portion of the brachialis m. ) Anterior Grant’s Dissector 13 th ed musculocutaneous n. Humerus Posterior Anterior median n. & ulnar n. Radius Ulna radial n. (including ECRL & brachioradialis mm. ) Posterior Anterior ulnar n. & median n. 5 th metacarpal Posterior

Muscle Compartments of the Upper Limb - forearm radial n. (including a portion of the brachialis m. ) Anterior Grant’s Dissector 13 th ed musculocutaneous n. Humerus Posterior Anterior median n. & ulnar n. Radius Ulna radial n. (including ECRL & brachioradialis mm. ) (FCU & ulnar ½ FDP) Posterior Anterior ulnar n. & median n. 5 th metacarpal Posterior

Grant’s Dissector 13 th

antebrachium antr compartment postr compartment n brachioradialis m. pronator teres m. n flex. carpi radialis m. n ext. carpi radialis longus m. n ext. carpi radialis brevis m. n palmaris longus m. n ext. carpi ulnaris m. n flex. carpi ulnaris m. n extensor digitorum m. n flex. digit. superf. m. n extensor digiti minimi m. n flex. digit. profund. m. n extensor indicis m. n flex. pollicis longus m. n abd pollicis longus m. n pronator quadratus m. n ext. pollicis longus/brevis m n n supinator m.

antebrachium antr compartment (median & ulnar nn. ) pronator teres m. (C 6, C 7) n flex. carpi radialis m. (C 6, C 7) n palmaris longus m. (C 7, C 8) n flex. carpi ulnaris m. (C 7, C 8) n flex. digit. superf. m. (C 7, C 8, T 1) n flex. digit. profund. m. (C 7, C 8, T 1) n flex. pollicis longus m. (C 8, T 1) n pronator quadratus m. (C 8, T 1) n

ulnar n. (C 7 -T 1) flex carpi ulnaris m. medial ½ FDP + 14 intrinsic hand muscles Netter’s Atlas of Human Anatomy 2 nd ed

median n. (C 5 -T 1) PT, FCR, PL, FDS, lat ½ FDP, FPL, PQ + 5 intrinsic hand muscles Netter’s Atlas of Human Anatomy 2 nd ed

antebrachium postr compartment (radial n. C 5 -T 1) brachioradialis m. (C 5, C 6) n ext. carpi radialis longus m. (C 6, C 7) n ext. carpi radialis brevis m. (C 6, C 7 or C 7, C 8) n ext. carpi ulnaris m. (C 7, C 8) n extensor digitorum m. (C 7, C 8) n extensor digiti minimi m. (C 7, C 8) n extensor indicis m. (C 7, C 8) n abd pollicis longus m. (C 7, C 8) n ext. pollicis longus/brevis m. (C 7, C 8) n supinator m. (C 5, C 6) n

radial n. (C 5 -T 1) triceps brachii m. , anconeus m. (brachialis m. ) BR, ECRL, ECRB, EDM, supinator, ECU, EI, Abd. PL, EPB Netter’s Atlas of Human Anatomy 2 nd

Grant’s Atlas of Anatomy 11 th ed

Muscle Compartments of the Upper Limb - hand radial n. (including a portion of the brachialis m. ) Anterior Grant’s Dissector 13 th ed musculocutaneous n. Humerus Posterior Anterior median n. & ulnar n. Radius Ulna radial n. (including ECRL & brachioradialis mm. ) (FCU & ulnar ½ FDP) Posterior Anterior ulnar n. & median n. 5 th metacarpal Posterior

Muscle Compartments of the Upper Limb - hand radial n. (including a portion of the brachialis m. ) Anterior Grant’s Dissector 13 th ed musculocutaneous n. Humerus Posterior Anterior median n. & ulnar n. Radius Ulna radial n. (including ECRL & brachioradialis mm. ) (FCU & ulnar ½ FDP) Posterior Anterior ulnar n. & median n. 5 th metacarpal Posterior (thenar mm. & 1 st, 2 nd lumbricals)

intrinsic hand muscles (C 8, T 1) n 7 interosseii mm. (4 dorsal/3 palmar) n 4 lumbrical mm. (1, 2, 3, 4) n palmaris brevis m. n adductor pollicis m. n three thenar mm. (OP, abd. PB, FPB) n three hypothenar mm. (ODM, abd. DM, FDMB)

intrinsic hand muscles (median & ulnar nn. ) n 7 interosseii mm. (4 dorsal/3 palmar) n 4 lumbrical mm. (1, 2, 3, 4) n palmaris brevis m. n adductor pollicis m. n three thenar mm. (OP, abd. PB, FPB) n three hypothenar mm. (ODM, abd. DM, FDMB)

upper limb cutaneous innervation Netter’s Atlas of Human Anatomy 2 nd ed

upper limb – dermatome pattern Netter’s Atlas of Human Anatomy 2 nd ed