Kawaguchi Y, Imagama S, Iwasaki M, Kaito T, Koda M, Chikuda H, et al. Japanese Orthopaedic Association (JOA) clinical practice guidelines on the management of ossification of the spinal ligament, 2019. J Orthop Sci. 2021;26:1–45.

Article  Google Scholar 

Sakai K, Yoshii T, Hirai T, Arai Y, Torigoe I, Tomori M, et al. Cervical Sagittal Imbalance is a Predictor of Kyphotic Deformity After Laminoplasty in Cervical Spondylotic Myelopathy Patients Without Preoperative Kyphotic Alignment. Spine (Philos Pa 1976). 2016;41:299–305.

Article  Google Scholar 

Iwasaki M, Kawaguchi Y, Kimura T, Yonenobu K. Long-term results of expansive laminoplasty for ossification of the posterior longitudinal ligament of the cervical spine: more than 10 years follow up. J Neurosurg. 2002;96:180–9.

PubMed  Google Scholar 

Fujiyoshi T, Yamazaki M, Kawabe J, Endo T, Furuya T, Koda M, et al. A new concept for making decisions regarding the surgical approach for cervical ossification of the posterior longitudinal ligament: the K-line. Spine (Philos Pa 1976). 2008;33:E990–93.

Article  Google Scholar 

Sakai K, Okawa A, Takahashi M, Arai Y, Kawabata S, Enomoto M, et al. Five-year follow-up evaluation of surgical treatment for cervical myelopathy caused by ossification of the posterior longitudinal ligament: a prospective comparative study of anterior decompression and fusion with floating method versus laminoplasty. Spine (Philos Pa 1976). 2012;37:367–76.

Article  Google Scholar 

Mayer M, Meier O, Auffarth A, Koller H. Cervical laminectomy and instrumented lateral mass fusion: techniques, pearls and pitfalls. Eur Spine J 2015;24:168–85.

Article  Google Scholar 

Yoshii T, Egawa S, Chikuda H, Wakao N, Furuya T, Kanchiku T, et al. Comparison of anterior decompression with fusion and posterior decompression with fusion for cervical spondylotic myelopathy-A systematic review and meta-analysis. J Orthop Sci. 2020;25:938–45.

Article  Google Scholar 

Yoshii T, Egawa S, Hirai T, Kaito T, Mori K, Koda M, et al. A systematic review and meta-analysis comparing anterior decompression with fusion and posterior laminoplasty for cervical ossification of the posterior longitudinal ligament. J Orthop Sci. 2020;25:58–65.

Article  Google Scholar 

Yuan W, Zhu Y, Liu X, Zhu H, Zhou X, Zhou R, et al. Postoperative three-dimensional cervical range of motion and neurological outcomes in patients with cervical ossification of the posterior longitudinal ligament: Cervical laminoplasty versus laminectomy with fusion. Clin Neurol Neurosurg. 2015;134:17–23.

Article  Google Scholar 

Koda M, Mochizuki M, Konishi H, Aiba A, Kadota R, Inada T, et al. Comparison of clinical outcomes between laminoplasty, posterior decompression with instrumented fusion, and anterior decompression with fusion for K-line (-) cervical ossification of the posterior longitudinal ligament. Eur Spine J. 2016;25:2294–301.

Article  Google Scholar 

Scheer JK, Tang JA, Smith JS, Acosta FL Jr., Protopsaltis TS, Blondel B, et al. Cervical spine alignment, sagittal deformity, and clinical implications: a review. J Neurosurg Spine. 2013;19:141–59.

Article  Google Scholar 

Hayashi T, Daubs MD, Suzuki A, Phan K, Shiba K, Wang JC, et al. Effect of Modic changes on spinal canal stenosis and segmental motion in cervical spine. Eur Spine J. 2014;23:1737–42.

Article  Google Scholar 

Kameyama T, Hashizume Y, Sobue G. Morphologic features of the normal human cadaveric spinal cord. Spine (Philos Pa 1976). 1996;21:1285–90.

CAS  Article  Google Scholar 

Galbusera F, Bellini CM, Anasetti F, Ciavarro C, Lovi A, Brayda-Bruno M, et al. Rigid and flexible spinal stabilization devices: a biomechanical comparison. Med Eng Phys. 2011;33:490–6.

Article  Google Scholar 

Lu YM, Hutton WC, Gharpuray VM. Can variations in intervertebral disc height affect the mechanical function of the disc? Spine (Philos Pa 1976). 1996;21:2208–16. discussion 17

CAS  Article  Google Scholar 

Cowin SC, Turner CH. On the relationship between the orthotropic Young’s moduli and fabric. J Biomech. 1992;25:1493–4.

CAS  Article  Google Scholar 

Périé D, Hobatho MC, Baunin C, Sales De Gauzy J. Personalised mechanical properties of scoliotic vertebrae determined in vivo using tomodensitometry. Comput Methods Biomech Biomed Engin. 2002;5:161–5.

Article  Google Scholar 

Ottardi C, Galbusera F, Luca A, Prosdocimo L, Sasso M, Brayda-Bruno M, et al. Finite element analysis of the lumbar destabilization following pedicle subtraction osteotomy. Med Eng Phys. 2016;38:506–9.

Article  Google Scholar 

Natarajan RN, Watanabe K, Hasegawa K. Biomechanical Analysis of a Long-Segment Fusion in a Lumbar Spine-A Finite Element Model Study. J Biomech Eng. 2018;140:091011.

Ichihara K, Taguchi T, Sakuramoto I, Kawano S, Kawai S. Mechanism of the spinal cord injury and the cervical spondylotic myelopathy: new approach based on the mechanical features of the spinal cord white and gray matter. J Neurosurg. 2003;99:278–85.

PubMed  Google Scholar 

Nishida N, Mumtaz M, Tripathi S, Kelkar A, Sakai T, Goel VK, et al. Biomechanical Analysis of Posterior Ligaments of Cervical Spine and Laminoplasty. Appl Sci. 2021;11:7645.

CAS  Article  Google Scholar 

Fujimori T, Iwasaki M, Okuda S, Takenaka S, Kashii M, Kaito T, et al. Long-term results of cervical myelopathy due to ossification of the posterior longitudinal ligament with an occupying ratio of 60% or more. Spine (Philos Pa 1976). 2014;39:58–67.

Article  Google Scholar 

Chen Y, Guo Y, Lu X, Chen D, Song D, Shi J, et al. Surgical strategy for multilevel severe ossification of posterior longitudinal ligament in the cervical spine. J Spinal Disord Tech. 2011;24:24–30.

CAS  Article  Google Scholar 

Chavanne A, Pettigrew DB, Holtz JR, Dollin N, Kuntz CT. Spinal cord intramedullary pressure in cervical kyphotic deformity: a cadaveric study. Spine (Philos Pa 1976). 2011;36:1619–26.

Article  Google Scholar 

Winestone JS, Farley CW, Curt BA, Chavanne A, Dollin N, Pettigrew DB, et al. Laminectomy, durotomy, and piotomy effects on spinal cord intramedullary pressure in severe cervical and thoracic kyphotic deformity: a cadaveric study. J Neurosurg Spine. 2012;16:195–200.

Article  Google Scholar 

Harrison DE, Cailliet R, Harrison DD, Troyanovich SJ, Harrison SO. A review of biomechanics of the central nervous system-Part III: spinal cord stresses from postural loads and their neurologic effects. J Manipulative Physiol Ther. 1999;22:399–410.

CAS  Article  Google Scholar 

Jarzem PF, Quance DR, Doyle DJ, Begin LR, Kostuik JP. Spinal cord tissue pressure during spinal cord distraction in dogs. Spine (Philos Pa 1976). 1992;17:S227–234.

CAS  Article  Google Scholar 

Jarzem PF, Kostuik JP, Filiaggi M, Doyle DJ, Ethier R, Tator CH, et al. Spinal cord distraction: an in vitro study of length, tension, and tissue pressure. J Spinal Disord. 1991;4:177–82.

CAS  Article  Google Scholar 

Henderson FC, Geddes JF, Vaccaro AR, Woodard E, Berry KJ, Benzel EC, et al. Stretch-associated injury in cervical spondylotic myelopathy: new concept and review. Neurosurgery. 2005;56:1101–13. discussion -13

PubMed  Google Scholar 

Kim YH, Khuyagbaatar B, Kim K. Biomechanical effects of spinal cord compression due to ossification of posterior longitudinal ligament and ligamentum flavum: a finite element analysis. Med Eng Phys. 2013;35:1266–71.

Article  Google Scholar 

Kato Y, Kanchiku T, Imajo Y, Kimura K, Ichihara K, Kawano S, et al. Biomechanical study of the effect of degree of static compression of the spinal cord in ossification of the posterior longitudinal ligament. J Neurosurg Spine. 2010;12:301–5.

Article  Google Scholar 

Nishida N, Kanchiku T, Imajo Y, Suzuki H, Yoshida Y, Kato Y, et al. Stress analysis of the cervical spinal cord: Impact of the morphology of spinal cord segments on stress. J spinal cord Med. 2016;39:327–34.

Article  Google Scholar 

Nishida N, Kanchiku T, Kato Y, Imajo Y, Suzuki H, Yoshida Y, et al. Cervical ossification of the posterior longitudinal ligament: factors affecting the effect of posterior decompression. J spinal cord Med. 2017;40:93–99.

Article  Google Scholar 

Tsuyama N. Ossification of the posterior longitudinal ligament of the spine. Clin Orthop Relat Res. 1984;184:71–84.

Maruo K, Moriyama T, Tachibana T, Inoue S, Arizumi F, Daimon T, et al. The impact of dynamic factors on surgical outcomes after double-door laminoplasty for ossification of the posterior longitudinal ligament of the cervical spine. J Neurosurg Spine. 2014;21:938–43.

Article  Google Scholar