Diagnostic accuracy of clinical tests for sciatic nerve entrapment in the gluteal region.
↑ Martin HD, Kivlan BR, Palmer IJ, Martin RL. What can the history and physical examination tell us about low back pain? JAMA. Physical examination for lumbar radiculopathy due two disc herniation in patients with low-back pain. ↑ Van der Windt DA, Simons E, Riphagen II, et al. The sensitivity of the seated straight-leg raise test compared with the supine straight-leg raise test in patients presenting with magnetic resonance imaging evidence of lumbar nerve root compression. ↑ Rabin A, Gerszten PC, Karausky P, Bunker CH, Potter DM, Welch WC. "Prevalence and associated factors of Osgood-Schlatter syndrome in a population-based sample of Brazilian adolescents." The American journal of sports medicine 39.2 (2011): 415-420. ↑ de Lucena, Gildásio Lucas, Cristiano dos Santos Gomes, and Ricardo Oliveira Guerra. Raising contralateral leg causes pain to radiate down ipsilateral leg. Herniated Nucleus Pulposus (Contralateral to leg pain). Patient has pain radiating down ipsilateral leg. 
Herniated Nucleus Pulposus (Ipsilateral to leg pain).Positive test is reproduction of neuropathic symptoms.During SLRT, apply pressure to sciatic or tibial nerve in popliteal fossa.Helps differentiate neural tension from hamstring or gastroc muscle tightness.
Positive test reproduction of sciatica neuropathic symptoms due to increased neural tension. SLR until symptoms reproduced, then lower leg into nonpainful range. SLRT worse with forced ankle dorsiflexion. 
Sciatica distribution neuropathic symptoms due to lateral pulling on the dural sac stretching opposite nerve root. Performing straight leg raise in uninvolved leg produces symptoms in involved leg. Crossed or contralateral straight leg raise. Patient experiences pain radiating down leg in similar distribution. Can be performed on the contralateral leg as well. 
Examiner raises leg by passively flexing at the hip 30-70°. Used in patients with lower back pain to evaluate for radicular features. Illustration of the straight leg raise test
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