TY - JOUR AU - Frey, M E; DePalma, M J; Cifu, D X TI - Percutaneous sacroplasty for osteoporotic sacral insufficiency fractures: a prospective, multicenter, observational pilot study JO - Spine J VL - 8 PY - 2008 DO - 10.1016/j.spinee.2007.05.011 L3 - PubMed-ID: 17981097 SP - 367 EP - 373 N1 - et al. ER -