DERMATOMES : DEFINITION, DIAGRAM, & CHARTS
Hello, This is a post about Dermatomes. Which are very useful in clinically for diagnosis of particular disease.
So, here we discuss further about dermatomes
What is Dermatomes ?
Dermatomes is a Particular are of the skin which pare mainly supply by single nerve root.
Why Dermatomes are Clinically Useful ?
It is useful for localised nerve lession any affection. Such a disease like Rediculopathy.
There Are 8 Cervical Nerve, 12 Thoracic Nerve, 5 lumbar Nerve, 5 Sacral Nerve.
Note :- C1 nerve root not supply any Area of the skin
This Spinal nerve classified in to 5 group according to Regions of the Body
Dermatomes Diagram :-
C2 to C4 :- Supply to skin of the neck
C5 to T1 :- Supply to skin of the arm
T2 to T4 :- Supply to skin of the Chest and Abdomen
L3 to S1 :- supply to the skin of Leg
S1 to S4 :- Supply to the skin of Groin
Cervical Nerves and Their Dermatomes :-
C2 : the base of the skull, behind the ear
C3 : the back of the head and the upper neck
C4 : the lower neck and upper shoulder
C5 : the upper shoulders and the two collarbones
C6 : the upper forearms and the thumbs and index fingers
C7 : the upper back, backs of the arms, and middle fingers
C8 : the upper back, inner arms, and ring and pinky fingers
Thoracic Nerves and Their Dermatomes :-
T1 : the upper chest and back and upper forearm
T2, T3, and T4 : the upper chest and back
T5, T6, and T7 : the mid-chest and back
T8 and T9 : the upper abdomen and mid-back
T10 : the midline of the abdomen and the mid-back
T11 and T12 : the lower abdomen and mid-back
Lumbar Nerves and Their Dermatomes :-
L1 : the groin, upper hips, and lower back
L2 : the lower back, hips, and tops of the inner thighs
L3 : the lower back, inner thighs, and inner legs just below the knees
L4 : the backs of the knees, inner sections of the lower legs, and the heels
L5 : the tops of the feet and the fronts of the lower legs
Sacral Nerves and Their Dermatomes :-
S1 : the lower back, buttocks, backs of the legs, and outer toes
S2 : the buttocks, genitals, backs of the legs, and heels
S3 : the buttocks and genitals
S4 and S5 : the buttocks
Coccyx nerve root supply to area of coccyx bone.