The effectiveness of Valsalva Maneuver-Assisted percutaneous vertebroplasty in reducing cement leakage in osteoporotic vertebral compression fractures. - Wang, Yongjie; Chen, Xueming; Lu, Qian; Cui, Libin; Li, Xiangyu; Kong, Chao; Lu, Shibao (BMC Musculoskeletal Disorders, 2025)