Martellucci S, et al. - In this study, researchers evaluated the consequence of cervical range of motion (C-ROM) on Canalith repositioning procedure (CRP) ability. They observed the first CRP successful in 61.7% of cases, whereas ineffective in 38.3% of subjects expecting multiple repositioning maneuvers. They also reported lower C-ROM in extension and flexion and earlier recurrences in individuals who required 2 or more CRP. They recorded a significant association of lower cervical extension with the failure of the first CRP in the univariate regression analysis. They suggested demand for multiple CRPs in the reduction of C-ROM to successfully treat BPPV and increase the risk of early recurrences.