1 Aizawa T , Sato T H , Kusakabe T , et al. Thoracic myelopathy caused by ossification of the ligamentum flavum: clinical features and surgical results in the Japanese population[J], Journal of Neurosurgery Spine, 5(6):514. DOI:10.3171/spi.2006.5.6.514, 2006
2 Okada K , Oka S , KENJITOHGE, , et al. Thoracic Myelopathy Caused by Ossification of the Ligamentum Flavum Clinicopathologic Study and Surgical Treatment[J]. SPINE, 16(3):280-287. DOI:10.1097/00007632-199103000-00005, 1991
3 Mori K , Imai S , Kasahara T , et al. Prevalence, Distribution, and Morphology of Thoracic Ossification of the Posterior Longitudinal Ligament in Japanese[J]. Spine, 39(5):394-399. DOI:10.1097/BRS.0000000000000153, 2014
4 Guo J , Luk K , Karppinen J , et al. Prevalence, distribution, and morphology of ossification of the ligamentum flavum: A population study of one thousand seven hundred thirty-six magnetic resonance imaging scans[J]. Spine, 35(1):51-56. DOI:10.1097/BRS.0b013e3181b3f779, 2010
5 Hou X, Sun C, Liu X, et al. Clinical Features of Thoracic Spinal Stenosis-associated Myelopathy: A Retrospective Analysis of 427 Cases.[J]. Journal of Spinal Disorders & Techniques, 29(2):1. DOI:10.1097/BSD.0000000000000081, 2016
6 Bong Ju M , Sung Uk K , Sungjun K , et al. Prevalence, Distribution, and Significance of Incidental Thoracic Ossification of the Ligamentum Flavum in Korean Patients with Back or Leg Pain : MR-Based Cross Sectional Study[J]. Journal of Korean Neurosurgical Society, 58(2):112-118. DOI:10.3340/jkns.2015.58.2.112, 2015
7 Kang K C , Lee C S , Shin S K , et al. Ossification of the ligamentum flavum of the thoracic spine in the Korean population[J]. Journal of Neurosurgery Spine, 14(4):513.DOI:10.3171/2010.11.SPINE10405, 2011
8 Chang U K , Choe W J , Chung C K , et al. Surgical treatment for thoracic spinal stenosis[J]. Spinal Cord, 39(7):362-369. DOI:10.1038/sj.sc.3101174, 2001
9 Miyakoshi N , Shimada Y , Suzuki T , et al. Factors related to long-term outcome after decompressive surgery for ossification of the ligamentum flavum of the thoracic spine[J]. Journal of Neurosurgery: Spine, 99(3):251-256. DOI:10.3171/spi.2003.99.3.0251, 2003
10 Trivedi P , Behari S , Paul L , et al. Thoracic Myelopathy Secondary to Ossified Ligamentum Flavum[J]. Acta Neurochirurgica, 143(8):775-782. DOI:10.1007/s007010170031, 2001
11 Eun S , Kumar R , Choi W , et al. Lamina Fenestration Technique for Treatment of Thoracic Ossified Ligamentum Flavum: 2-Year Follow-Up Result[J]. Journal of Neurological Surgery Part A: Central European Neurosurgery, s-0036-1586253. DOI:10.1055/s-0036-1586253, 2016
12 Miao X , He D , Wu T , et al. Percutaneous endoscopic spine minimal invasive technique for the decompression therapy of thoracic myelopathy caused by ossification of the ligamentum flavum[J]. World Neurosurgery, S187887501830425X. DOI:10.1016/j.wneu.2018.02.152, 2018
13 Li K K , Chung O M , Chang Y P , et al. Myelopathy Caused by Ossification of Ligamentum Flavum[J]. Spine, 27(12):E308-E312. DOI:10.1097/00007632-200206150-00026, 2002
14 Li M , Meng H , Du J , et al. Management of thoracic myelopathy caused by ossification of the posterior longitudinal ligament combined with ossification of the ligamentum flavum—a retrospective study[J]. The Spine Journal, 12(12):1093-1102. DOI:10.1016/j.spinee.2012.10.022, 2012
15 Sato T , Kokubun S , Tanaka Y , et al. Thoracic Myelopathy in the Japanese : Epidemiological and Clinical Observations on the Cases in Miyagi Prefecture[J]. Tohoku Journal of Experimental Medicine, 184(1):1. DOI:10.1620/tjem.184.1, 1998
16 Matsumoto Y , Harimaya K , Doi T , et al. Clinical characteristics and surgical outcome of the symptomatic ossification of ligamentum flavum at the thoracic level with combined lumbar spinal stenosis[J]. Archives of Orthopaedic & Trauma Surgery, 132(4):465-470. DOI:10.1007/s00402-011-1438-7, 2012
17 Sun J , Zhang C , Ning G , et al. Surgical strategies for ossified ligamentum flavum associated with dural ossification in thoracic spinal stenosis[J]. Journal of Clinical Neuroscience, 21(12):2102-2106. DOI:10.1016/j.jocn.2014.02.027, 2012
18 Thomé, Claudius, Zevgaridis D , Leheta O , et al. Outcome after less-invasive decompression of lumbar spinal stenosis: a randomized comparison of unilateral laminotomy, bilateral laminotomy, and laminectomy[J]. Journal of Neurosurgery: Spine,3(2):129-141. DOI:10.3171/spi.2005.3.2.0129, 2005
19 Okada K , Oka S , KENJITOHGE, , et al. Thoracic Myelopathy Caused by Ossification of the Ligamentum Flavum Clinicopathologic Study and Surgical Treatment[J]. SPINE, 16(3):280-287. DOI:10.1097/00007632-199103000-00005, 1991
20 Yang Z , Xue Y , Zhang C , et al. Surgical treatment of ossification of the ligamentum flavum associated with dural ossification in the thoracic spine[J]. Journal of Clinical Neuroscience, 20(2):212-216. DOI:10.1016/j.jocn.2012.02.028, 2013
21 Jia L S , Chen X S , Zhou S Y , et al. En Bloc Resection of Lamina and Ossified Ligamentum Flavum in the Treatment of Thoracic Ossification of the Ligamentum Flavum[J]. Neurosurgery, 66(6):1181-1186. DOI:10.1227/01.neu.0000369516.17394.b0, 2010
22 Wu B , Zhan G , Tian X , et al. Comparison of Transforaminal Percutaneous Endoscopic Lumbar Discectomy with and without Foraminoplasty for Lumbar Disc Herniation: A 2-Year Follow-Up[J]. Pain Research and Management, 2019:1-12. DOI: 10.1155/2019/6924941, 2019
23 Li M , Wang Z , Du J , et al. Thoracic myelopathy caused by ossification of the ligamentum flavum: a retrospective study in Chinese patients[J]. Journal of Spinal Disorders & Techniques, 26(1):E35-E40. DOI:10.1097/BSD.0b013e31827ada68, 2013
24 Xia X P , Chen H L , Cheng H B . Prevalence of Adjacent Segment Degeneration After Spine Surgery[J]. Spine, 38(7):597-608. DOI:10.1097/brs.0b013e318273a2ea, 2013
25 Depalma M J , Ketchum J M , Saullo T R , et al. Is the history of a surgical discectomy related to the source of chronic low back pain[J]. Pain Physician,15(1):E53. DOI:10.1111/j.1525-1403.2012.00433.x, 2012
26 Chaichankul C , Poopitaya S , Tassanawipas W . The effect of learning curve on the results of percutaneous transforaminal endoscopic lumbar discectomy [J]. J Med Assoc Thai, 95 Suppl 10(95 Suppl 10):S206-12. DOI:2012 Oct;95 Suppl 10 :S206-12., 2012