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Dermotomes

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Nerve Root
Dermatome Pattern
Myotome
C1   vertex of skull   forward neck flexion  
🗑
C2   temple, forehead & occiput   forward neck flexion  
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C3   neck & under mandible   side neck flexion  
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C4   shoulder, clavicle & upper scapula areas   shoulder elevation  
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C5   deltoid area & anterolateral limb up to base of thumb   shoulder abduction  
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C6   lateral limb, radial hand & thumb & index fingers   elbow flexion and/or wrist extension  
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C7   posterior limb & index, middle & ring fingers   elbow extension and/or wrist flexion  
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C8   medial limb & ring & little fingers   ulnar deviation and/or thumb extension  
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T1   anteromedial limb up to base of little finger   finger abduction and/or adduction  
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T2   medial arm & axilla   n/a  
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T4, T5   upper thorax & nipple line   n/a  
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T10, T11   abdomen & lumbar area & umbilicus   n/a  
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T12   back over the trochanter & groin area   n/a  
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L2   back & anterior thigh   hip flexion  
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L3   back & upper buttock, anterior thigh & knee & medial leg   knee extension  
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L4   medial buttock, lateral thigh, medial leg, dorsum of foot & great toe   ankle dorsiflexion  
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L5   buttock, posterolateral thigh, lateral leg, dorsum of foot, medial sole & 3 digits   great toe extension  
🗑


   

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Created by: LInda_J