caa a22 4500 445831634 CHVBK 20180317145317.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00586-011-1701-1 doi (NATIONALLICENCE)springer-10.1007/s00586-011-1701-1 Kinematic evaluation of the adjacent segments after lumbar instrumented surgery: a comparison between rigid fusion and dynamic non-fusion stabilization [Elektronische Daten] [Yuichiro Morishita, Hideki Ohta, Masatoshi Naito, Yoshiyuki Matsumoto, George Huang, Masato Tatsumi, Yoshiharu Takemitsu, Hirotaka Kida] The aim of the current study was to evaluate changes in lumbar kinematics after lumbar monosegmental instrumented surgery with rigid fusion and dynamic non-fusion stabilization. A total of 77 lumbar spinal stenosis patients with L4 degenerative spondylolisthesis underwent L4-5 monosegmental posterior instrumented surgery. Of these, 36 patients were treated with rigid fusion (transforaminal lumbar interbody fusion) and 41 with dynamic stabilization [segmental spinal correction system (SSCS)]. Lumbar kinematics was evaluated with functional radiographs preoperatively and at final follow-up postoperatively. We defined the contribution of each segmental mobility to the total lumbar mobility as the percent segmental mobility [(sagittal angular motion of each segment in degrees)/(total sagittal angular motion in degrees)×100]. Magnetic resonance imaging was performed on all patients preoperatively and at final follow-up postoperatively. The discs were classified into five grades based on the previously reported system. We defined the progress of disc degeneration as (grade at final follow-up)−(grade at preoperatively). No significant kinematical differences were shown at any of the lumbar segments preoperatively; however, significant differences were observed at the L2-3, L4-5, and L5-S1 segments postoperatively between the groups. At final follow-up, all of the lumbar segments with rigid fusion demonstrated significantly greater disc degeneration than those with dynamic stabilization. Our results suggest that the SSCS preserved 14% of the kinematical operations at the instrumented segment. The SSCS may prevent excessive effects on adjacent segmental kinematics and may prevent the incidence of adjacent segment disorder. Springer-Verlag, 2011 Adjacent segment disorder nationallicence Dynamic non-fusion stabilization nationallicence Rigid fusion nationallicence Segmental spinal correction system (SSCS) nationallicence Lumbar segmental mobility nationallicence Morishita Yuichiro Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut Ohta Hideki Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut Naito Masatoshi Department of Orthopaedic Surgery, Fukuoka University, Fukuoka, Japan aut Matsumoto Yoshiyuki Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut Huang George Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut Tatsumi Masato Japan Self Defense Force Hospital, Beppu, Oita, Japan aut Takemitsu Yoshiharu Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut Kida Hirotaka Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut European Spine Journal Springer-Verlag 20/9(2011-09-01), 1480-1485 0940-6719 20:9<1480 2011 20 586 https://doi.org/10.1007/s00586-011-1701-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00586-011-1701-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Morishita Yuichiro Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut NATIONALLICENCE 700 1- Ohta Hideki Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut NATIONALLICENCE 700 1- Naito Masatoshi Department of Orthopaedic Surgery, Fukuoka University, Fukuoka, Japan aut NATIONALLICENCE 700 1- Matsumoto Yoshiyuki Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut NATIONALLICENCE 700 1- Huang George Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut NATIONALLICENCE 700 1- Tatsumi Masato Japan Self Defense Force Hospital, Beppu, Oita, Japan aut NATIONALLICENCE 700 1- Takemitsu Yoshiharu Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut NATIONALLICENCE 700 1- Kida Hirotaka Oita Orthopedic Hospital, 1-1-41 Iwata-machi, 870-0936, Oita, Japan aut NATIONALLICENCE 773 0- European Spine Journal Springer-Verlag 20/9(2011-09-01), 1480-1485 0940-6719 20:9<1480 2011 20 586 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer