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Femoral nerve stretch test (Mackiewicz sign) - for the FNST the patient lies prone, the knee is passively flexed to the thigh and the hip is passively extended; the test is positive if the patient experiences anterior thigh pain. This test is usually strongly positive in patients with protrusions at L2-L3 and L3-L4, slightly positive or negative in L4-L5 disc protrusions and negative in cases with a lumbosacral protrusion.
Video Femoral nerve stretch test
References
Maps Femoral nerve stretch test
Further reading
- Christodoulides, A. N. (1989). "Ipsilateral sciatica on femoral nerve stretch test is pathognomonic of an L4/5 disc protrusion". The Journal of Bone and Joint Surgery. British volume. 71 (1): 88-89. PMID 2915013.
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