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Dermatomes of the Body and What They Do
At the lower end, the 11 lumbar, sacral, and coccygeal dermatomes are often grouped ... Research into leg pain patterns from damaged L5 and S1 nerve roots used MRI to analyze spinal injuries ...
Medscape1d
Accuracy of Physical Examination for Chronic Lumbar Radiculopathy
The tests were the straight leg raising test, and tests for motor muscle strength, dermatome ... for L4, 1.74 (95% CI 1.04–2.93) for L5, and 1.29 (95% CI 0.97–1.72) for S1 nerve root impingement.