can be used to distinguish between the two.
this, of course, depends on a patient only having one or another of the conditions. if you have both conditions at the same time, these will not work.
the first position is done this way: from a seated position, straighten the leg in which you are having pain, so that your leg is parallel with the floor.
if the symptoms increase, there is a good chance that what you have is true sciatica.
the second position is achieved in two steps. again, take a sitting position. then, in the leg in which you have pain, bring the knee up to the shoulder on the same side.
while 