The document summarizes the key nerves of the upper limb, including their origin, course, branches, and sensory and motor innervation. It describes the axillary nerve, musculocutaneous nerve, radial nerve, median nerve, and ulnar nerve. Each nerve is outlined in a table with columns for nerve name, root origin, course and branches, sensory innervation, motor innervation, and clinical aspects.

1. 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

2. 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.

3. 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.

4. 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