Femoral nerve stretch test

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Femoral nerve stretch test
Medical diagnostics
Purposerelated to possible nerve root impingements.

Femoral nerve stretch test, also known as Mackiewicz sign[1] is a test for disc protrusion and femoral nerve injury. 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 for L2-L3 and L3-L4 (high lumbar) protrusions, slightly positive or negative in L4–L5, and negative in cases of lumbosacral protrusion.[2]


  1. ^ Ory, Avi (June 2007). "Dr Jacob Mackiewicz (1887-1966) and his sign". Journal of Medical Biography. 15 (2): 102–103. doi:10.1258/j.jmb.2007.06-16. Retrieved 14 February 2019.
  2. ^ Christodoulides, Antonios N (1989). "Ipsilateral Sciatica on Femoral Nerve Stretch Tests is Pathognomonic of and L4/5 Disc Protrusion". The Journal of Bone and Joint Surgery. 71 (1): 88. doi:10.1302/0301-620X.71B1.2915013. Retrieved 14 February 2019.