rtance of changes in chronic pain intensity measured on an 11-point numerical pain rating scale. Pain 2001;94:149-58. [20] Tallirico RA, Madom IA, Palumbo MA. Spondylolysis and spondylolis- thesis in the athlete. Sports Med Anliteisc Rev 2008;16:32-8. [21] Susukida R, Crum RM, Ebnesajjad C, et al. General