Imaging and biomechanics researches of reconstructing lumbosacral stability after L 5 vertebrectomy via anterolateral approach

• Published in: Zhongguo xiu fu chong jian wai ke za zhi Vol. 31; no. 2; pp. 210 - 214
• Main Authors: Sun, Zhaozhong, Cheng, Yan, Li, Rui, Ren, Jiabin, Fang, Qingmin, Zheng, Zhenyang, Liu, Xin
• Format: Journal Article
• Language: Chinese
• Published: China 15.02.2017
• Subjects: Biomechanical Phenomena; Bone Screws; Bone Transplantation; Cadaver; Female; Humans; Lumbar Vertebrae - surgery; Lumbosacral Region; Male; Random Allocation; Range of Motion, Articular; Sacrum; L5 lesions; biomechanics; anterolateral approach; imaging
• ISSN: 1002-1892
• DOI: 10.7507/1002-1892.201610092

To investigate the feasibility of anterolateral approach for L vertebral resection, bone grafting, and screw rod fixation by imaging and biomechanics researches. Twenty formalized adult cadavers (12 males and 8 females) were randomly divided into 2 groups; L vertebral resection, bone graft, and screw rod fixation was performed on 10 specimens by using anterolateral approach (experimental group), and on the other 10 specimens by combined anterior and posterior approach. CT scanning and three-dimensional reconstruction were performed in the experimental group; preoperative maximal safe entry angle and depth of screws and intraoperative actual entry angle and depth of screws were measured; the sacral screw position was observed after operation. The biomechanical test was done in 2 groups. Twenty specimens smoothly underwent L excision and reconstruction. CT scan showed that there was no significant difference in maximal safe entry angle and depth of screws between males and females in experimental group before o