Most of the posts relate to fractures following a fall and I’m wondering if anyone else has experienced a spontaneous osteoporotic fracture. My 1st one- a left pilon fracture occurred after I walked around an art fair for hours (more walking than usual) on level surface and required surgery. The 2nd one occurred 2 days after the pilon fx surgery when I started to stand up from a chair and fractured my right patella in half (full disclosure that knee had a replacement a year prior). At the time of these fractures I had been on Prolia for 18 months. Was started on Tymlos 3 months later.