Silver Book Fact
A prior vertebral fracture increases risk of another vertebral fracture by 5-fold for the year following.
Lindsay, Robert, Stuart L. Silverman, Cyrus Cooper, David A. Hanley, Ian Barton, Susan B. Broy, Angelo Licata, Laurent Benhamou, Piet Geusens, Kirsten Flowers, Hilmar Stracke, and Ego Seeman. Risk of New Vertebral Fracture in the Year Following a Fracture. JAMA. 2001; 285(3): 320-3. http://jama.ama-assn.org/cgi/content/abstract/285/3/320