He also a clinical professor of orthopedic surgery at the University of Chicago Pritzker School of Medicine, an associate editor of the Journal of Bone and Joint Surgery, and a spokesperson for the American Academy of Orthopaedic Surgeons (AAOS). Updated May 11, 2012, 10:52 AM Right off the bat, this seems like a no-brainer. A 45-year-old man on a skateboard? Midlife crisis: no question about it. And what could be more dangerous than a weekend warrior riding on a teenager’s toy? The inevitable crash qualifies as certainly embarrassing.