Femoral nerve stretch test

Femoral nerve stretch test, also known as Mackiewicz sign 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. Femoral nerve stretch test, also known as Mackiewicz sign 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.