1. American Sports Data Inc. Sports Injury Report. Available at http://www.americansportsdata.com/sports_injury1.asp. Accessed November 16, 2006.
2. US Consensus Product Safety Commission, Directorate for Epidemiology, National Electronic Injury Surveillance System. Available at http://www.cpsc.gov. Accessed November 16, 2006.
3. Long DM, BenDebba M, Torgerson WS, et al.: Persistent back pain and sciatica in the United States: patient characteristics. J Spinal Disord 1996, 9:40–58.
4. Borenstein DG, O’Mara JW Jr, Boden SD, et al.: The value of MRI of the lumbar spine to predict low-back pain in asymptomatic subjects. A seven-year follow-up study. JBJS Am 2001, 83:1306–1311.
5. Sasaki K: MRI findings of the lumbar nerve root pathway in patients over 50 years old. Eur Spine J 1995, 4:71–76.