Ipsilateral sciatica on femoral nerve stretch test is pathognomonic of an
L4/5 disc protrusion. Christodoulides-A-N. Department of Neurosurgery, Government General Hospital, Piraeus, J-Bone-Joint-Surg-[Br]. 1989 Jan. 71(1). P 88-9. The straight leg raising test and the femoral nerve stretch test exert traction on the sciatic and femoral nerve, and the lumbosacral plexus and roots. In 40 patients with a suspected L4/5 disc protrusion, ipsilateral sciatica was induced by the femoral nerve stretch test. We believe that this is a pathognomonic sign of a lateral protrusion at L4/5 level.
Original Text by Clifford R. Wheeless, III, MD.
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