The Straight Leg Raise Test is most associated with which finding?

• A. Herniated disk anywhere along the spine
• B. Sciatic nerve irritation/compression
• C. SI joint provocation
• D. Pubic ring instability

Answer: (B)

Neural tension in the lumbar region, particularly of the sciatic nerve, is what the Straight Leg Raise probes. When the leg is raised with the knee straight, the sciatic nerve and its nerve roots are put on stretch. If this provokes pain that travels down the leg, especially in a radicular pattern, it indicates irritation or compression of the sciatic nerve roots, most often from a lumbar disc herniation affecting L5–S1 (and sometimes adjacent levels).

This test is not about the SI joint or pubic ring structures, and while a lumbar disc herniation can cause a positive result, the key takeaway is the provocation of sciatic nerve/nerve root symptoms through lumbar neural tension.