The straight-leg-raising test: a review*.

A positive unilateral straight-leg-raising sign is routinely interpreted as indicative of a "disc lesion. " A review of the literature was undertaken in an attempt to more clearly illustrate the mechanisms and results of the straight-leg-raising test. It was found that a positive straight-leg-raising test has minimal value in differentiating a patient with herniated disc from other patients with love back pain and sciatica. J Orthop Sports Phys Ther 1981;2(3):117-133.