Clinical Maps

Dermatomes, myotomes and reflexes: which nerve root does what, how each is tested, and what changes point to.

59 clinical maps

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7 clinical maps starting with S Clear ×

Clinical Map S1 Dermatome Dermatoma S1 Foot & Ankle The S1 dermatome covers the outer (lateral) border of the foot, the little toe, the heel…

Clinical Map S1 Myotome Myotoma S1 Lower Leg The S1 myotome is tested by ankle plantarflexion, the ISNCSCI key movement for S1, through the…

Clinical Map S2 Dermatome Dermatoma S2 Thigh The S2 dermatome is a long strip running down the back of the thigh and the…

Clinical Map S2 Myotome Myotoma S2 Thigh The S2 myotome is commonly tested by knee flexion through the hamstrings, together with S1, and…

Clinical Map S3 Dermatome Dermatoma S3 Pelvis & Hip The S3 dermatome covers the inner buttock and the skin around the ischial tuberosity and the…

Clinical Map S3-S4 Myotome Myotoma S3-S4 Pelvis & Hip The S3-S4 myotome supplies the pelvic floor and the external anal and urethral sphincters. These roots,…

Clinical Map S4-S5 Dermatome Dermatoma S4-S5 Pelvis & Hip The S4-S5 dermatome forms the innermost ring of the saddle area, the skin immediately around the…