Sex and arthritis

This incredible display is from a site (which I can't find now, sorry) called Sex and Arthritis. The drawings are so beautful on their own, I hesitate to sully them with my usual blatherings. I have no idea how these seven line-drawings of sexual postures, like some pen-and-ink Kama Sutra of the internet, are supposed to help people with arthritis. I don't even HAVE arthritis, or not much, maybe a couple of flareups a year, and I'll tell you, I could not manage many of these positions. Figures 3, 4 and 7 involve pillows, which is a nice idea when you're past a certain age, though I might do something else with them entirely. Figure 6, probably my favorite, depicts the male partner crushing  his girl friend into a footstool: she appears to have been pressed flat to about 3" thick. (Or maybe it's a stair-step, which is even kinkier.) In Figure 7, however, it's not the poor steamrollered woman but the man who is prone (prostrate, NOT prostate) with his concerned partner leaning tenderly over him, perhaps as they wait for the ambulance to arrive.