Contralateral Straight-Leg Raise is highly specific for which condition?

Contralateral Straight-Leg Raise is highly specific for which condition?

• A. Piriformis Syndrome
• B. Lumbar Stenosis
• C. Large Lumbar Central Disc Herniation
• D. Sacroiliac Dysfunction

Answer: (C)

Crossed straight-leg raise shows nerve root tension on the opposite side. When you raise the leg opposite the side of symptoms and pain appears in that opposite leg, it strongly suggests a large central lumbar disc herniation because such a central, sizable lesion can affect multiple nerve roots within the canal. This pattern is much less likely with piriformis syndrome, sacroiliac dysfunction, or typical lumbar stenosis, making the contralateral sensation a highly specific indicator for a large central disc herniation. Keep in mind it’s highly specific but not perfectly sensitive, so a negative test doesn’t rule out a herniation.

Crossed straight-leg raise shows nerve root tension on the opposite side. When you raise the leg opposite the side of symptoms and pain appears in that opposite leg, it strongly suggests a large central lumbar disc herniation because such a central, sizable lesion can affect multiple nerve roots within the canal. This pattern is much less likely with piriformis syndrome, sacroiliac dysfunction, or typical lumbar stenosis, making the contralateral sensation a highly specific indicator for a large central disc herniation. Keep in mind it’s highly specific but not perfectly sensitive, so a negative test doesn’t rule out a herniation.