Check out printmag with the feature on the leg in print. …”The human leg has evolved continually over many eons, adapting from an underwater propeller to its current form. But on book covers and on film and theater posters, the leg has evolved very little. In fact, the “A-Frame,” a cutoff-torso-spread-leg framing device, is the most frequently copied trope ever used.”.. For more images click here.