ATLS Spinal Levels Key Myotomes and Dermatomes
Posted by dkwinter

Key myotomes
C5 deltoid
C6 wrist extensors (biceps, extensor carpi radialis longus and brevis)
C7 elbow extensors (triceps)
C8 finger flexors to the middle finger
T1 small finger abductors (abductor digiti minimi)
L2 hip flexors (iliopsoas)
L3,L4 knee extensors (quadriceps, patellar reflexes)
L4,L5 to S1 knee flexion (hamstrings)
L5 ankle and big toe dorsiflexors (tibialis anterior and extensor hallucis longus)
S1 ankle plantar flexors (gastrocnemius, soleus)
Spinal dermatomes
C2, C3, C4, C5, C6, C7, C8, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, L1, L2, L3, L4, L5, S1, S2, S3, S4, S5