Cutaneous Nerve

CUTANEOUS NERVES, SUPERFICIAL VEINS & LYMPHATIC DRAINAGE OF THE UPPER LIMB 10TH

DEC 2004

CUTANEOUS NERVES (superficial sensory nerves)      

Upper part of pectoral region & skin over upper part of deltoid ARM FOREARM PALM DORSUM OF HAND DIGITS

CUTANEOUS NERVE OF THE PALM  Lateral

palm

2/3rd of the

 Medial

palm

1/3rd of the

 Base

of the thenar eminence

DORSUM OF THE HAND  Medial

part including proximal phalanges of medial 2&1/2 digits

 Lateral

part including proximal phalanges of lateral 2&1/2 digits

 Lateral

3&1/2 digits

DERMATOMES OF THE UPPER LIMB  Defination

of Dermatome

 Typical

dermatome extends from the posterior median line to anterior median line on one side of the trunk

 Spinal

nerve at the intervertebral foramen

 Migration

of the dermatomes in the limb

Embryological basis of innervation

 Embryological

basis of cutaneous innervation of upper limb

 Why

posterior rami do not suppply the limb?

 Why

the area of sensory loss following damage to the cord is always less than the area of distribution of the dermatomes???

 Rough

guide to estimate the position of a spinal segment in relation to the surface of the body

SUPERFICIAL VEINS OF THE UPPER LIMB  Cephalic

Vein  Basilic Vein  Median Cubital Vein  Median Vein of the Forearm  GENERAL

POINTS

DORSAL VENOUS ARCH  SITE  DRAINS

FORMATION OF DORSAL VENOUS ARCH

Cephalic vein (preaxial vein)  Formation  Drainage  Course

 Anatomical

box Defination Boundaries Contents

snuff

 Accessory

Vein

Cephalic

BASILIC VEIN  Formation  Drainage  Course

Median Cubital Vein  Course

 Anterior

median vein of the Forearm

Median Vein of theForearm -Formation -Drainage -Anomalies

LYMPHATIC DRAINAGE OF THE UPPER LIMB

LYMPH NODE

LYMPH NODE OF THE UPPER LIMB

INFRACLAVICULAR LYMPHNODE

DELTOPECTORAL LYMPHNODE

SUPRATROCHLEAR LYMPHNODE