Disks, Spurs, Stenosis: Slippage, and Osteoporosis
Dermatome Map of the Body
Each of the spinal nerves provides sensation to a predictable area of skin. Pain radiating down the leg to the small toe in the general pattern of the S1 dermatome suggests that a herniated disk may be pinching the S1 nerve root in the spine. Reproduced from Atlas of Human Anatomy by Frank Netter, MD, with permission of Icon Learning Systems/Elsevier.