Beyond a Curved Spine / Blog / kNOw Scoliosis / Man Crush Monday #MCM: World’s Fastest Man, Usain Bolt &… He has Scoliosis ! :D Usain Bolt’s scoliosis was detected while growing up. He doesn’t have a visible hump (kyphosis) on his back, but he does have a really curved “S” on his back. 🙂 …