caa a22 4500 445835125 CHVBK 20180317145328.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00586-011-1888-1 doi (NATIONALLICENCE)springer-10.1007/s00586-011-1888-1 Adjacent segment degeneration after single-segment PLIF: the risk factor for degeneration and its impact on clinical outcomes [Elektronische Daten] [Bai-Ling Chen, Fu-Xin Wei, Kazumasa Ueyama, Deng-Hui Xie, Akio Sannohe, Shao-Yu Liu] Purpose: To investigate: (1) the risk factors for radiologic cranial adjacent segment degeneration (ASD) after single-segment PLIF at the same level, and (2) the impact of the ASD on the clinical outcomes. Methods: From October 2004 to May 2009, 109 patients who underwent PLIF for degenerative instability at L4/5 and have more than 2years follow-up were studied retrospectively. We measured the preoperative bone mineral density (BMD), lumbar lordosis, the lumbosacral joint angle, the lumbar inclination, the height and the dynamic angulation of the intervertebral space at the fused segments and the upper adjacent segment, the sliding displacement between L3 and L4. Clinical outcomes were evaluated using the Japanese Orthopedic Association (JOA) score and the Oswestry Disability Index (ODI). Patients were divided into two groups according to the progression of L3-L4 degeneration: Group A without progression of L3-L4 degeneration, Group B with progression of L3-L4 degeneration. Clinical outcomes and radiologic measurement index between the two groups were compared, and the risk factors for progression of L3-L4 degeneration were analyzed. The correlation between clinical outcomes and progression of L3-L4 degeneration were also investigated. Results: There were 11 patients (22%) classified into Group A. No significant difference was found between the two groups in terms of the lordosis angle at L1 and S1, the laminar inclination at L3, the pre-existing L3-L4 disk degeneration, the lordosis angle of L4-L5, the lumbosacral joint angle and preoperative BMD (P>0.05). Significant differences were found between the two groups in age. No significant difference was found between the two groups in the ODI and the JOA score at the final follow-up (P>0.05). Conclusion: Radiologic degeneration of the cranial adjacent segment after single-segment PLIF did not significantly correlate with clinical outcomes. Age was a risk factor for radiologic degeneration, however, there was no significant correlation between degeneration and preoperative radiologic factors and bone mineral density (BMD). Springer-Verlag, 2011 Lumbar fusion nationallicence Adjacent segment degeneration nationallicence Risk factor nationallicence Clinical outcome nationallicence Chen Bai-Ling Department of Spinal Surgery, First Affiliated Hospital of Sun Yat-Sen University, NO. 183, Huangpu East Road, Guangzhou, Guangdong, China aut Wei Fu-Xin Department of Spinal Surgery, First Affiliated Hospital of Sun Yat-Sen University, NO. 183, Huangpu East Road, Guangzhou, Guangdong, China aut Ueyama Kazumasa Department of Spinal Surgery, Hirosaki Memorial Hospital, Hirosaki, Japan aut Xie Deng-Hui Department of Orthopedic Surgery, Guangzhou Women and Children's Hospital, Guangzhou, China aut Sannohe Akio Department of Spinal Surgery, Hirosaki Memorial Hospital, Hirosaki, Japan aut Liu Shao-Yu Department of Spinal Surgery, First Affiliated Hospital of Sun Yat-Sen University, NO. 183, Huangpu East Road, Guangzhou, Guangdong, China aut European Spine Journal Springer-Verlag 20/11(2011-11-01), 1946-1950 0940-6719 20:11<1946 2011 20 586 https://doi.org/10.1007/s00586-011-1888-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00586-011-1888-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Bai-Ling Department of Spinal Surgery, First Affiliated Hospital of Sun Yat-Sen University, NO. 183, Huangpu East Road, Guangzhou, Guangdong, China aut NATIONALLICENCE 700 1- Wei Fu-Xin Department of Spinal Surgery, First Affiliated Hospital of Sun Yat-Sen University, NO. 183, Huangpu East Road, Guangzhou, Guangdong, China aut NATIONALLICENCE 700 1- Ueyama Kazumasa Department of Spinal Surgery, Hirosaki Memorial Hospital, Hirosaki, Japan aut NATIONALLICENCE 700 1- Xie Deng-Hui Department of Orthopedic Surgery, Guangzhou Women and Children's Hospital, Guangzhou, China aut NATIONALLICENCE 700 1- Sannohe Akio Department of Spinal Surgery, Hirosaki Memorial Hospital, Hirosaki, Japan aut NATIONALLICENCE 700 1- Liu Shao-Yu Department of Spinal Surgery, First Affiliated Hospital of Sun Yat-Sen University, NO. 183, Huangpu East Road, Guangzhou, Guangdong, China aut NATIONALLICENCE 773 0- European Spine Journal Springer-Verlag 20/11(2011-11-01), 1946-1950 0940-6719 20:11<1946 2011 20 586 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer