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Dermatomes

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Topic updated on 05/17/17 8:52pm

Overview
  •  Definition
    • an area of skin that is mainly supplied by a single spinal nerve
  • Use
    • determining which part of the spine is affected by nerve damage
Head and Neck
 
Vertebral Level Sensory Area
C2 Occipital Protuberance
C3 Supraclavicular fossa
C4 Acromioclavicular joint
V1 Ophthalmic division of Trigeminal nerve (upper face)
V2 Maxillary division of Trigeminal nerve (middle face)
V3 Mandibular division of Trigeminal nerve (lower face)

                                                

Upper Extremity
 
Vertebral Level Sensory Area
C5 Lateral antecubital fossa
 C6  Thumb
C7 Middle finger
C8 Little finger
T1 Medial antecubital fossa
T2 Apex of axilla

                                  

                                

Chest and Abdomen
 
Vertebral Level Sensory Area Way to Remember
T4 Chest at level of nipple T4 at teat pore
T7

Chest at level of xiphoid process

T7 at bottom of sternum
T10 Abdomen at level of umbilicus T10 at belly button (butTEN)
L1 Abdomen at inguinal ligament L1 for IL

 

Lower Extremity
 
Vertebral Level Sensory Area
L1  Upper anterior thigh
L2 Mid anterior thigh
L3 Medial femoral condyle
L4 LE at patella/medial malleolus
L5 Dorsum 3rd MTP joint
S1 Lateral heel
S2 Popliteal fossa
S3 Ischial tuberosity
S5 Perianal area

 



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