Dermatome mapping tends to be accurate but not all the time, though. Research into leg pain patterns from damaged L5 and S1 nerve roots used MRI to analyze spinal injuries and found 50% to 80% of ...

The tests were the straight leg raising test, and tests for motor muscle strength, dermatome sensory loss ... and 1.29 (95% CI 0.97–1.72) for S1 nerve root impingement. An overall clinical ...