Hi, I was 68 and very active, water skiing, tennis and keeping fit on a rowing machine then I thought I'd cracked a rib skiing which took months to heal then went skiing and the same thing happened again. I had an MRI which showed four collapsed vertebrae so a follow up bone density scan gave a value of 2.7 on the osteoporosis scale. That was nearly two years ago so now no skiing, tennis or rowing machine. I'm due for another bone density scan in June. My main problem is severe backache as the muscles try to compensate for ribs which are out of position. I take alendronic acid and Adcal calcium substitutes and I do 15 minutes exercises every morning, have physio every two weeks and do an hour's Pilates with an osteoporosis expert weekly. I'd love to find a way to stop the muscles from trying all the time to compensate and just causing horrible backache by doing more harm than good.