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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


Gray’s Anatomy 37th ed

Grant’s Atlas of Anatomy 8th ed


Grant’s Atlas 8th ed

Grant’s Atlas of Anatomy 8th ed


Antr division:

flexor comp.

Postr division:

ext comp.

Netter’s Atlas of Human Embryology 2002


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




21.

Rohen/YokochiColor Atlas of Anatomy 2nded


Brachial Plexus

Netter’s Atlas 2nd ed


hand – forearm – arm – shoulder

distal proximal

Grant’s Atlas of Anatomy 8th ed


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.


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)


Grant’s Atlas 8th ed

Grant’s Atlas of Anatomy 8th ed




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.


Grant’s Atlas 8th ed

Grant’s Atlas of Anatomy 8th ed



rotator cuff musculature

Netter’s Atlas 2nd ed


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


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


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



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


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.)


ulnar n. (C7-T1)

flex carpi ulnaris m.

medial ½ FDP

+ 14 intrinsic hand

muscles

Netter’s Atlas of Human Anatomy 2nd ed


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)


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



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


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)


upper limb -

cutaneous innervation

Netter’s Atlas of Human Anatomy 2nd ed


upper limb –

dermatome pattern

Netter’s Atlas of Human Anatomy 2nd ed


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