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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 ed. Grant’s Atlas 8 th ed. Grant’s Atlas of Anatomy 8 th ed. Antr division: flexor comp. Postr division: ext comp.

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organization of the upper limb

Organization of theUpper Limb

Robert S. Staron, Ph.D.

Summer Anatomy Immersion

slide2

Gray’s Anatomy 37th ed

Grant’s Atlas of Anatomy 8th ed

slide3

Grant’s Atlas 8th ed

Grant’s Atlas of Anatomy 8th ed

slide4

Antr division:

flexor comp.

Postr division:

ext comp.

Netter’s Atlas of Human Embryology 2002

slide5

Anterior

Muscle Compartments of the Upper Limb

Grant’s Dissector 13th ed

musculocutaneous n.

Humerus

radial n.

Posterior

(including a portion

of the brachialis m.)

Anterior

median n. & ulnar n.

Radius

Ulna

radial n.

(including ECRL & brachioradialis mm.)

Posterior

ulnar n. & median n.

Anterior

5th metacarpal

Posterior

origin of limb muscles
Origin of Limb Muscles

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

Carlson l999

Human Embryology Larsen 1993

slide9

21.

Rohen/YokochiColor Atlas of Anatomy 2nded

slide10

Brachial Plexus

Netter’s Atlas 2nd ed

slide11

hand – forearm – arm – shoulder

distal proximal

Grant’s Atlas of Anatomy 8th ed

slide12
trapezius m.

latissimus dorsi m.

levator scapulae m.

rhomboideus major m.

rhomboideus minor m.

serratus anterior m.

infraspinatus m.

supraspinatus m.

subscapularis m.

teres minor m.

teres major m.

deltoid m.

Extrinsic shoulder mm.

Intrinsic shoulder mm.

Anterior thorax mm.

1) pectoralis major and minor mm.

2)subclavius m.

slide13
trapezius m. (spinal accessory n. - CN XI + C3 & C4)

latissimusdorsi m. (thoracodorsal n. - C6, C7, C8)

levator scapulae m. (C3 & C4 + dorsal scapular n. - C5)

rhomboideus major m. (dorsal scapular n. - C5)

rhomboideus minor m. (dorsal scapular n. - C5)

serratus anterior m. (long thoracic n. - C5, C6, C7)

Extrinsic shoulder mm.

Anterior thorax mm.

1) pectoralis major ( C5-T1) & minor (C6-C8) mm.

med/lat

pect nn.

2)subclavius m. (n. to subclavius m. - C5, C6)

slide14

Grant’s Atlas 8th ed

Grant’s Atlas of Anatomy 8th ed

slide17
infraspinatus m. (suprascapular n. - C5, C6)

supraspinatus m. (suprascapular n. - C5, C6)

subscapularis m. (upper + lower subscapularnn. - C5, C6)

teres minor m. (axillary n. - C5, C6)

teres major m. (lower subscapular n. - C5, C6)

deltoid m. (axillary n. - C5, C6)

Intrinsic shoulder mm.

slide18

Grant’s Atlas 8th ed

Grant’s Atlas of Anatomy 8th ed

slide20

rotator cuff musculature

Netter’s Atlas 2nd ed

slide21

Anterior

Muscle Compartments of the Upper Limb - arm

Grant’s Dissector 13th ed

musculocutaneous n.

Humerus

radial n.

Posterior

(including a portion

of the brachialis m.)

Anterior

median n. & ulnar n.

Radius

Ulna

radial n.

(including ECRL & brachioradialis mm.)

Posterior

ulnar n. & median n.

Anterior

5th metacarpal

Posterior

brachium
biceps brachii m.

long head

short head

brachialis m.

coracobrachialis m.

triceps brachii m.

lateral head

medial head

long head

anconeus m.

brachium

antr compartment

postr compartment

slide24

musculocutaneous n.

(C5-C7)

biceps brachii m. (C5, C6)

brachialis m. (C5, C6)

coracobrachialis m. (C5-C7)

Netter’s Atlas of Human Anatomy 2nd ed

slide25

axillary n. (C5-C6)

deltoid m. (C5, C6)

teres minor m. (C5, C6)

radial n.(C5-T1)

triceps brachii m. (C6-C8)

anconeus m. (C7, C8)

(brachialis m. C5, C6)

Netter’s Atlas of Human Anatomy 2nd ed

slide27

Anterior

Muscle Compartments of the Upper Limb - forearm

Grant’s Dissector 13th ed

musculocutaneous n.

Humerus

radial n.

Posterior

(including a portion

of the brachialis m.)

Anterior

median n. & ulnar n.

Radius

Ulna

radial n.

(including ECRL & brachioradialis mm.)

Posterior

ulnar n. & median n.

Anterior

5th metacarpal

Posterior

slide28

Anterior

Muscle Compartments of the Upper Limb - forearm

Grant’s Dissector 13th ed

musculocutaneous n.

Humerus

radial n.

Posterior

(including a portion

of the brachialis m.)

Anterior

median n. & ulnar n.

(FCU & ulnar ½

FDP)

Radius

Ulna

radial n.

(including ECRL & brachioradialis mm.)

Posterior

ulnar n. & median n.

Anterior

5th metacarpal

Posterior

antebrachium
pronator teres m.

flex. carpi radialis m.

palmaris longus m.

flex. carpi ulnaris m.

flex. digit. superf. m.

flex. digit. profund. m.

flex. pollicis longus m.

pronator quadratus m.

brachioradialis m.

ext. carpiradialislongus m.

ext. carpiradialisbrevis m.

ext. carpiulnaris m.

extensor digitorum m.

extensor digitiminimi m.

extensor indicis m.

abdpollicislongus m.

ext. pollicislongus/brevis m.

supinator m.

antebrachium

antr compartment

postr compartment

antebrachium1
pronatorteres m. (C6, C7)

flex. carpiradialis m. (C6, C7)

palmarislongus m. (C7, C8)

flex. carpiulnaris m. (C7, C8)

flex. digit. superf. m. (C7, C8, T1)

flex. digit. profund. m. (C7, C8, T1)

flex. pollicislongus m. (C8, T1)

pronatorquadratus m. (C8, T1)

antebrachium

antr compartment (median & ulnar nn.)

antebrachium2
pronatorteres m. (C6, C7)

flex. carpiradialis m. (C6, C7)

palmarislongus m. (C7, C8)

flex. carpiulnaris m. (C7, C8)

flex. digit. superf. m. (C7, C8, T1)

flex. digit. profund. m. (C7, C8, T1)

flex. pollicislongus m. (C8, T1)

pronatorquadratus m. (C8, T1)

antebrachium

antr compartment (median & ulnar nn.)

slide33

ulnar n. (C7-T1)

flex carpi ulnaris m.

medial ½ FDP

+ 14 intrinsic hand

muscles

Netter’s Atlas of Human Anatomy 2nd ed

slide34

median n. (C5-T1)

PT, FCR, PL, FDS, lat ½ FDP, FPL, PQ

+ 5 intrinsic hand

muscles

Netter’s Atlas of Human Anatomy 2nd ed

antebrachium3
brachioradialis m. (C5, C6)

ext. carpiradialislongus m. (C6, C7)

ext. carpiradialisbrevis m. (C6, C7 or C7, C8)

ext. carpiulnaris m. (C7, C8)

extensor digitorum m. (C7, C8)

extensor digitiminimi m. (C7, C8)

extensor indicis m. (C7, C8)

abdpollicislongus m. (C7, C8)

ext. pollicislongus/brevis m. (C7, C8)

supinator m. (C5, C6)

antebrachium

postr compartment (radial n. C5-T1)

slide36

radial n. (C5-T1)

triceps brachii m., anconeus m.

(brachialis m.)

BR, ECRL, ECRB, ED, EDM, supinator, ECU, EI, AbdPL, EPL, EPB

Netter’s Atlas of Human Anatomy 2nd ed

slide38

Anterior

Muscle Compartments of the Upper Limb - hand

Grant’s Dissector 13th ed

musculocutaneous n.

Humerus

radial n.

Posterior

(including a portion

of the brachialis m.)

Anterior

median n. & ulnar n.

(FCU & ulnar ½

FDP)

Radius

Ulna

radial n.

(including ECRL & brachioradialis mm.)

Posterior

ulnar n. & median n.

Anterior

5th metacarpal

Posterior

slide39

Anterior

Muscle Compartments of the Upper Limb - hand

Grant’s Dissector 13th ed

musculocutaneous n.

Humerus

radial n.

Posterior

(including a portion

of the brachialis m.)

Anterior

median n. & ulnar n.

(FCU & ulnar ½

FDP)

Radius

Ulna

radial n.

(including ECRL & brachioradialis mm.)

Posterior

ulnar n. & median n.

Anterior

(thenar mm. & 1st, 2nd lumbricals)

5th metacarpal

Posterior

intrinsic hand muscles c8 t1
intrinsic hand muscles (C8, T1)
  • 7 interosseii mm. (4 dorsal/3 palmar)
  • 4 lumbrical mm. (1, 2, 3, 4)
  • palmaris brevis m.
  • adductor pollicis m.
  • three thenar mm. (OP, abd.PB, FPB)
  • three hypothenar mm. (ODM, abd.DM, FDMB)
intrinsic hand muscles median ulnar nn
intrinsic hand muscles (median & ulnarnn.)
  • 7 interosseii mm. (4 dorsal/3 palmar)
  • 4 lumbrical mm. (1, 2, 3, 4)
  • palmaris brevis m.
  • adductor pollicis m.
  • three thenar mm. (OP, abd.PB, FPB)
  • three hypothenar mm. (ODM, abd.DM, FDMB)
slide42

upper limb -

cutaneous innervation

Netter’s Atlas of Human Anatomy 2nd ed

slide43

upper limb –

dermatome pattern

Netter’s Atlas of Human Anatomy 2nd ed

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