NERVES OF UPPER LIMB -KESHAVA PAVAN K
NERVE ROOT ORIGIN COURSE AND BRANCHES SENSORY MOTOR CLINICAL
VALUE INNERVATION INNERVATION ASPECTS
AXILLARY C5 AND POSTERIOR -PASSES THROUGH QUADRANGULAR -SHOULDER -DELTOID -REGIMENTAL
C6 CORD OF SPACE JOINT -TERES MINOR BADGE
NERVE
BRACHIAL -RUNS AROUND SURGICAL NECK OF -SKIN OVER ANASTHESIA
PLEXUS HUMERUS LOWER LATERAL -WASTING OF
-GIVES A BRANCH TO SHOULDER JOINT, PART OF DELTOID
THEN DIVIDES TO ANTERIOR & SHOULDER -IMPAIRED
POSTERIOR BRANCHES ABDUCTION OF
-ANTERIOR BRANCH CONTINUES AS SHOULDER
UPPER LATERAL CUTANEOUS NERVE OF -ALL THESE
ARM OCCUR DURING
INFERIOR
DISLOCATION OF
HEAD OF
HUMERUS FROM
SHOULDER AND
FRACTURE OF
SURGICAL NECK
OF HUMERUS
MUSCULO- C5, C6 LATERAL -PIERCES CORACO BRACHIALIS -SKIN OF -CORACO
AND C7 CORD OF -PASSES BETWEEN BICEPS & BRACHIALIS LATERAL PART BRACHIALIS
CUTANEOUS
BRACHIAL -MUSCULAR BRANCHES TO MUSCLES OF OF FOREARM -BICEPS BRACHII
NERVE PLEXUS ANTERIOR FOREARM -BRACHIALIS
-LATERAL CUTANEOUS NERVE OF
FOREARM
-ARTICULAR BRANCH TO ELBOW

RADIAL C5 TO POSTERIOR -IN AXILLA 3 BRANCHES: POSTERIOR -SKIN ON BACK & -TRICEPS -INJURY TO
T1 CORD OF CUTANEOUS NERVE OF ARM, NERVES TO LATERAL -ANCONEUS RADIAL NERVE
NERVE
BRACHIAL LONG & MEDIAL HEADS OF TRICEPS SURFACE OF ARM -SMALL PART OF RESULTS MAINLY
-ENTERS ARM AT LOWER BORDER OF UPTO ELBOW BRACHIALIS & IN ‘WRIST DROP’
PLEXUS
TERES MAJOR -SKIN DOWN THE BRACHIORADIALIS -‘SATURDAY
-PASSES THROUGH LOWER TRIANGULAR MIDDLE OF BACK -ECRL & ECRB NIGHT PARALYSIS’
SPACE & REACHES SPIRAL GROOVE OF FOREARM -SUPINATOR -RADIAL TUNNEL
-IN SPIRAL GROOVE, 5 BRANCHES: UPTO WRIST -ALL EXTENSOR SYNDROME
LOWER LATERAL CUTANEOUS NERVE OF -SKIN OVER MUSCLES OF -INJURY TO DEEP
ARM, POSTERIOR CUTANEOUS NERVE OF LATERAL PART FOREARM BRANCH
FOREARM, NERVES TO LATERAL & OF DORSUM OF
MEDIAL HEADS OF TRICEPS AND TO HAND & DORSAL
ANCONEUS SURFACES OF
-AT LOWER END OF SPIRAL GROOVE, LATERAL 3 AND
PIERCES LATERAL MUSCULAR SEPTUM HALF DIGITS
OF ARM & ENTERS ANTERIOR PROXIMAL TO
COMPARTMENT OF ARM WHERE IT GIVES NAIL BEDS.
3 BRANCHES (ABOVE LATERAL
EPICONDYLE): NERVES TO BRACHIALIS,
BRACHIORADIALIS & ECRL
-ENTERS CUBITAL FOSSA
-DEEP BRANCH (POSTERIOR
INTEROSSEUS NERVE) PIERCES
SUPINATOR & ENTERS EXTENSOR
COMPARTMENT OF FOREARM
-SUPERFICIAL BRANCH IN ANTERIOR
COMPARTMENT PASSES THROUGH
TENDON OF BRACHIORADIALIS INTO
POSTERIOR COMPARTMENT, PROXIMAL
TO RADIAL STYLOID PROCESS
-CONTENT OF ANATOMICAL SNUFF BOX,
THEN GIVING CUTANEOUS BRANCHES.

MEDIAN C5 TO -LATERAL -ENTERS ARM AT LOWER BORDER OF -SKIN OF -FPL, LATERAL -INJURY AT ELBOW
T1 ROOT FROM TERES MAJOR PALMAR ASPECT HALF OF FDP & RESULTS IN
NERVE SYMPTOMS LIKE APE
LATERAL -IN ARM, CROSSES IN FRONT OF OF LATERAL 3 PRONATOR
(LABOROR’S CORD & BRACHIAL ARTERY AT MIDHUMERAL AND HALF DIGITS QUADRATUS BY
THUMB DEFORMITY
& BENEDICTION
NERVE) MEDIAL LEVEL INCLUDING NAIL A.I.N.
ATTITUDE
ROOT FROM -ENTERS CUBITAL FOSSA BEDS & SKIN ON -3 THENAR -INJURY AT
MEDIAL -IN CUBITAL FOSSA, COVERED BY DORSAL ASPECT MUSCLES AND FOREARM LEADS TO
CORD BICIPETAL APONEUROSIS SEPARATING IT OF DISTAL FIRST 2 POINTING INDEX
FROM MEDIAN CUBITAL VEIN PHALANGES LUMBRICALS FINGER
-GIVES MUSCULAR BRANCHES IN -PRONATOR -CARPAL TUNNEL
CUBITAL FOSSA TERES, SYNDROME :
COMPRESSION OF
-LEAVES CUBITAL FOSSA BY PASSING FCR,PALMARIS
MEDIAN NERVE IN
THROUGH 2 HEADS OF PRONATOR LONGUS & FDS
THE CARPAL
TERES & GIVES OFF THE BRANCH- -WRIST &
TUNNEL
ANTERIOR INTEROSSEOUS NERVE INFERIOR RADIO -TESTS USED TO
-IN FOREARM PASSES BETWEEN FDS & ULNAR JOINT DETECT ARE TINEL’S
FDP SIGN, PHALEN’S TEST
-MUSCULAR BRANCH IN MIDARM
-ARTICULAR BRANCHES TO ELBOW &
PROXIMAL RADIO ULNAR JOINT
-PALMAR CUTANEOUS BRANCH PASSES
SUPERFICIAL TO FLEXOR RETINACULUM
-PASSES THROUGH CARPAL TUNNEL
-IN PALM, DIVIDES INTO LATERAL &
MEDIAL DIVISIONS. LATERAL DIVISION
GIVES RECURRENT BRANCH & MEDIAL
DIVISION GIVES 2 PALMAR DIGITAL
NERVES.

ULNAR C7, C8 & -MEDIAL -IN AXILLA, LIES BETWEEN AXILLARY -SKIN OVER -FCU & MEDIAL -INJURY AT
T1 CORD OF ARTERY & VEIN HYPOTHENAR HALF OF FDP ELBOW LEADS TO
NERVE
BRACHIAL -AT THE LEVEL OF INSERTION OF EMINENCE -ALL INTRINSIC CUBITAL TUNNEL
(MUSICIAN’S PLEXUS & CORACO BRACHIALIS, IT PIERCES MEDIAL -SKIN OVER MUSCLES OF HAND SYNDROME,
NERVE) VENTRAL INTERMUSCULAR SEPTUM & ENTERS MEDIAL THIRD OF EXCEPT THE 5 VALGUS
RAMUS OF POSTERIOR COMPARTMENT OF ARM DORSUM OF MUSCLES DEFORMITY OF
C7 -RUNS DOWNWARDS TO BACK OF HAND & MEDIAL SUPPLIED BY ELBOW
MEDIAL EPICONDYLE OF HUMERUS 1 AND HALF MEDIAN NERVE -INJURY AT WRIST
-PASSES THROUGH FLOOR OF CUBITAL FINGERS OCCURS AT
TUNNEL -SKIN ON GUYON’S CANAL
-ENTERS FOREARM BY PASSING PALMAR LEADING TO
BETWEEN 2 HEADS OF FCU SURFACE OF ULNAR PARADOX
-IN LOWER TWO THIRD OF FOREARM, MEDIAL 1 AND -MAIN SYMPTOM
BECOMES SUPERFICIAL & RUNS HALF FINGERS OF ANY INJURY TO
TOGETHER WITH ULNAR ARTERY ON ITS ULNAR NERVE IS
MEDIAL SIDE CLAW HAND
-BRANCHES AT FOREARM: MUSCULAR DEFORMITY
BRANCHES TO FCU, FDP; PALMAR -POSITIVE
CUTANEOUS BRANCH & DORSAL FORMENT’S SIGN
CUTANEOUS BRANCH
-ENTERS PALM BY PASSING THROUGH
ULNAR TUNNEL, SUPERFICIAL TO FLEXOR
RETINACULUM
-SUPERFICIAL & DEEP TERMINAL
BRANCHES
-DEEP TERMINAL BRANCH ENTERS
GUYON’S CANAL & ENDS IN ADDUCTOR
POLLICIS