DIFFERENCES BETWEEN CASES WITH BONE UNION AND CASES WITH INTRAVERTEBRAL CLEFT FOLLOWING OSTEOPOROTIC VERTEBRAL FRACTURES: O69.Yasuda Hiroyuki; Hoshino, Masatoshi; Tsujio, Tadao; Terai, Hidetomi; Toyoda, Hiromitsu; Suzuki, Akinobu; Dohzono, Sho; Matsumoto, Tomiya; Nakamura, HiroakiSpine Journal Meeting Abstracts: 2013 - Volume - Issue - ppg 49 Free