Femoral nerve stretch test

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Femoral nerve stretch test (Mackiewicz sign[1]) - for the FNST the patient lies prone, the knee is passively flexed to the thigh and the hip is passively extended(reverse Lasegues); the test is positive if the patient experiences anterior thigh pain. This test is usually positive L2-L3, L3-L4(high lumbar), slightly positive or negative in L4–L5 disc protrusions and negative in cases with a lumbosacral protrusion.


  1. ^ Ohry, A (2011). "סימן פיסיקלי שנשכח: הסימן על שם מצקביץ'" [A forgotten eponym: the Mackiewicz sign]. Harefuah (in Hebrew). 150 (6): 548–49, 550. PMID 21800497. 

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