It is kind of useless to say that you have long femurs because you are tall - you can only have long femurs in proportion to the rest of your body.
Is there a standardized way to test if you have long or short femurs relative to your height?
I heard that when you do the supine knee-to-chest stretch, if your knee extends past your belly button when you flex the hip completely, then you have long femurs, if not, you have short femurs.
Is that a good way to test for it?