TY - JOUR AU - Frey, M E; DePalma, M J; Cifu, D X TI - Efficacy and safety of percutaneous sacroplasty for painful osteoporotic sacral insufficiency fractures: a prospective, multicenter trial JO - Spine VL - 32 PY - 2007 DO - 10.1097/BRS.0b013e318074d4e1 SP - 1635 EP - 1640 N1 - et al. ER -