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nar ar eryIt is the larger of twoterminal branches of brachial artery

Beginning: at the neckof radiusCourse:upper 1/3 oblique deepto ulnar head of pronator teres lying on

tendon of brachialis,then on FDP beingcovered by 5 flexors.Lower 2/3 vertical lyingon FDP and overlappedby FCU .

5cm above wristbecomes superficialcovered by skin &fascia .

Ulnar A.Medial N

Pronator

deep headSuperficialhead

FCUFDP

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At wrist: runs infront of flexor retinaculum deep topalmaris brevis andlateral to pisiformwhere it continues inpalm as superficialpalmar arch

Palmar aponeurosis

Palmaris brevis

Ulnar N&A

Superficialpalmar arch

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R elation between the ulnar artery andmedian nerve at the cubital fossa

Ulnar ateryMedian nerve

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3-Common interosseous: 1cm, arise below radiusturbidity. passes backwards

above membrane and dividesinto:A-anterior interosseousdescends in front of of membrane between FPL andFDP . Then pierces the lower part of membrane to join thepost. Carpal arch.Branches:

Median arterynutrient arteriesMuscular branchesAnastomotic branch:passes deep to PQ to jointhe ant. Carpal arch

Commoninterosseous

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B-Posterior interosseous: passes dorsallybetween oblique cord and membran e, thenbetween supinator and abductor pollicis longusdeep to the superficial extensors. On APL , itaccompanies post. Intereosseous N . it ends inpost. Carpal arch. Branches : muscular and postinterosseous recurrent

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4 - muscular branches5- anterior carpal branch

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6 -posterior carpal branch 7-deep palmar branch8- termination: supereficial

palmar arch

6

78

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Ant.&post ulnar recurrent

Common interosseous

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anastomosis between radial and ulnar arteries:1- At wrist : palmar and dorsal carpal arches2- In the hand: superficial and deep palmar arches3- At digits: between digital and metacarpal branches

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Anastomosis around elbowA- around medial epicondyle:* Front of medial condyle1-ant. Ulnar recurrent 2- anterior branch

of inferior ulnar collateralBack of medial epicondyle1- post. Ulnar recurrent 2- post. Branchof inferior ulnar collateral 3- superior ulnar collateral.B-around lateral epicondyle

Front of lateral epicondyle1- radial collateral of profunda2-radial recurrent

Back of lateral epicondyle1- middle collateral of profunda2-interosseous recurrent

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Anastomosis around thewrist

Anterior (palmar) carpal arch

1- anterior carpal branch of radial2-anterior carpal branch ofulnar 3- recurrent branch from deeppalmar arch4 -branch from anterior interosseousPosterior (dorsal) carpal arch1- posterior carpal branch fromradial2- posterior carpal branch fromulnar 3- anterior interosseous4 - posterior interosseous

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Ulnar arteryIt is the larger of twoterminal branches of brachial artery