Adams and Victor's Principles of Neurology

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Figure 9-1. 
The cutaneous fields of peripheral nerves. (Reproduced
by permission from Haymaker W, Woodhall B: 
 
Peripheral Nerve Inju-
ries
, 2nd ed. Philadelphia, Saunders, 1953.)
Great auricular n.
Ant. cut. n. of neck
Ant.
cut.
rami
of
thor.
n’s.
T2
3
4
5
6
7
8
9
10
11
12
Lat.
cut.
rami
Supraclavicular n’s.
Med. cut. n. of arm
& intercostobrachial n.
Med. cut. n. 
of forearm
Iliohypo-
gastric n.
Genital
branch of
genitofem. n.
Dorsal n. of penis
Scrotal branch of perineal n.
Obturator n.
Lat.cut. n. of calf
(
from common peroneal n.
)
Superficial peroneal n.
(
from common peroneal n.
)
Deep peroneal n.
(
from common peroneal n.
)
Intermed. & med. cut. n’s.
of thigh (
from femoral n.
)
Lat. cut. n. of thigh
Lat. cut. of forearm
(
from musculocut. n.
)
Lower lat.cut. n. of arm
(
from radial n.
)
Axillary n.
(
circumflex
)
I
II
III
Ilio-
inguinal n.
Femoral branch
of genito- 
femoral n.
(lumbo-inguinal n.)
Saphenous n.
(
from femoral n.
)
Med. & lat. plantar n’s.
(
from posttibial n.
)
Sural n.
(
from tibial n.
)
Radial n.
Median n.
Ulnar n.
 
Figure 9-1. 
(
 
Continued
)
Great auricular n.
Greater
Lesser n.
}
occipital nerves
Ant. cut. n. of neck
T2
3
4
5
6
7
8
9
10
11
12
T1
L1
S1
Post. rami of
lumbar sacral
& coccygeal n’s.
Lat.
cut.
rami
Post.
cut.
rami
of
thor.
n’s.
C5
C6
Supraclavicular n’s.
Med. cut. n. of arm
& intercostobrachial n.
Post. cut. n. of forearm
(from radial n.)
Lat. cut. n. of forearm
(from musculocut n.)
Med. 
cut. n. 
of 
forearm
Obturator n.
Superficial peroneal n.
(from common peroneal n.)
Lat. cut. n.of calf
(from common femoral n.)
Inf. med.
cluneal n.
Inf. lat.
cluneal n’s.
Lat. plantar n.
Saphenous n.
Sural n.
Calcanean branches
of tibial & sural n’s.
Med. plantar 
n.
Lat. 
plantar n.
Superficial
peroneal
n.
Inf. med. n. of thigh
Post cut. n. of thigh
Lower
Lat. cut. of arm
(from radial n.)
Post cut. n. of arm
(from radial n.)
Axillary n.
(circumflex)
Iliohypo-
gastric n.
Saphenous n.
(from femoral n.)
Med. cut. n. of thigh
(from femoral n.)
Calcanean branches of
sural & tibial n’s.
Sural n. 
(from tibial n.)
Radial n.
Median n.
Ulnar n.

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Figure 9-2. 
Distribution of the sensory spinal roots on the surface of 
the body (dermatomes). (Reproduced by permission from Sinclair.)
T2
T2
T2
T1
T1
C3
C3
C4
C4
C5
C5
C5
C6
C6
C8
C6
C7
C8
T3
T3
T4
T4
T5
T5
T6
T6
T7
T7
T8
T8
T9
T9
T10
T10
T11
T11
T12
T12
L1
L2
L3
L3
L4
L4
L5
L5
L5
L1
L3
S1
S2
S2
S1
S1
S3
S4
S5
L
2

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Adams and Victor’s 
 
PRINCIPLES OF 
 
NEUROLOGY

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Adams and Victor’s
 
PRINCIPLES OF 
 
NEUROLOGY
N I N T H E D I T I O N
 
Allan H. Ropper, MD
Professor of Neurology
Harvard Medical School
Executive Vice Chair of Neurology
Brigham and Women’s Hospital
Boston, Massachusetts
 
Martin A. Samuels, MD, 
FAAN, MACP, DSc (Hon)
Chairman
Department of Neurology
Brigham and Women’s Hospital
Professor of Neurology
Harvard Medical School
Boston, Massachusetts
New York Chicago San Francisco Lisbon London Madrid Mexico City
Milan New Delhi San Juan Seoul Singapore Sydney Toronto

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