1. Fujiyoshi T, Yamazaki M, Kawabe J, et al. A new concept for making decisions regarding the surgical approach for cervical ossification of the posterior longitudinal ligament: the K-line. Spine (Phila Pa 1976) 2008 33:E990-3.
2. Fujimori T, Iwasaki M, Okuda S, 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 (Phila Pa 1976) 2014 39:58-67.
4. Kawaguchi Y, Matsui H, Ishihara H, et al. Axial symptoms after en bloc cervical laminoplasty. J Spinal Disord 1999 12:392-5.
5. Yoshida M, Tamaki T, Kawakami M, et al. Does reconstruction of posterior ligamentous complex with extensor musculature decrease axial symptoms after cervical laminoplasty? Spine (Phila Pa 1976) 2002 27:1414-8.
6. Shiraishi T, Fukuda K, Yato Y, et al. Results of skip laminectomy-minimum 2-year follow-up study compared with open-door laminoplasty. Spine (Phila Pa 1976) 2003 28:2667-72.
7. Takeuchi K, Yokoyama T, Aburakawa S, et al. Axial symptoms after cervical laminoplasty with C3 laminectomy compared with conventional C3-C7 laminoplasty: a modified laminoplasty preserving the semispinalis cervicis inserted into axis. Spine (Phila Pa 1976) 2005 30:2544-9.
8. Ono A, Tonosaki Y, Numasawa T, et al. The relationship between the anatomy of the nuchal ligament and postoperative axial pain after cervical laminoplasty: cadaver and clinical study. Spine (Phila Pa 1976) 2012 37:E1607-13.
11. Takeuchi K, Yokoyama T, Numasawa T, et al. K-line (-) in the neck-flexed position in patients with ossification of the posterior longitudinal ligament is a risk factor for poor clinical outcome after cervical laminoplasty. Spine (Phila Pa 1976) 2016 41:1891-5.
13. Tani T, Ushida T, Taniguchi S, et al. Functional neuroscience: evoked potentials and related techniques. In: Selected presentations from the 8th International Evoked Potentials Symposium (Fukuoka, Japan); Supplements to Clinical Neurophysiology. Amsterdam (the Netherlands), ELSEVIER. 2006 Chapter 35, Partial conduction block in cervical compression myelopathies: waveform changes of ascending spinal evoked potentials. pp 265. -74.
14. Investigation Committee on OPLL of the Japanese Ministry of Public Health and Welfare. The ossification of the longitudinal ligament of the spine (OPLL). J Jpn Orthop Assoc 1981 55:425-40.
15. Yonenobu K, Nakamura K, Toyama Y. OPLL: ossification of the posterior longitudinal ligament. Japan: Springer; 2006.
16. Tomita K, Kawahara N, Toribatake Y, et al. Expansive midline T-saw laminoplasty (modified spinous process-splitting) for the management of cervical myelopathy. Spine (Phila Pa 1976) 1998 23:32-7.
17. Nakano K, Harata S, Suetsuna F, et al. Spinous process-splitting laminoplasty using hydroxyapatite spinous process spacer. Spine (Phila Pa 1976) 1992 17(3 Suppl):S41-3.
18. Fukui M, Chiba K, Kawakami M, et al. JOA Back Pain Evaluation Questionnaire (JOABPEQ)/JOA Cervical Myelopathy Evaluation Questionnaire (JOACMEQ). The report on the development of revised versions. April 16, 2007. The Subcommittee of the Clinical Outcome Committee of the Japanese Orthopaedic Association on Low Back Pain and Cervical Myelopathy Evaluation. J Orthop Sci 2009 14:348-65.
19. Sherk HH. Stability of the lower cervical spine. In: Kehr P, Weidner A editors. Cervical spine I. New York: Springer Verlag Wien; 1987. p.59-64.
20. Takeuchi K, Yokoyama T, Aburakawa S, et al. Anatomic study of the semispinalis cervicis for reattachment during laminoplasty. Clin Orthop Relat Res 2005 (436):126-31.
22. Nolan JP Jr, Sherk HH. Biomechanical evaluation of the extensor musculature of the cervical spine. Spine (Phila Pa 1976) 1988 13:9-11.
23. Conley MS, Meyer RA, Bloomberg JJ, et al. Noninvasive analysis of human neck muscle function. Spine (Phila Pa 1976) 1995 20:2505-12.
24. Vasavada AN, Li S, Delp SL, et al. Influence of muscle morphometry and moment arms on the moment-generating capacity of human neck muscles. Spine (Phila Pa 1976) 1998 23:412-22.
25. Heller JG, Pedlow FX Jr, Gill SS. Anatomy of the cervical spine. In: Clark CR editors. The cervical spine. 4th ed. Philadelphia (PA): Lippincott Williams & Wilkins; 2005. p.3-36.
26. Hori T, Kawaguchi Y, Kimura T. How does the ossification area of the posterior longitudinal ligament thicken following cervical laminoplasty? Spine (Phila Pa 1976) 2007 32:E551-6.
27. Iwasaki M, Kawaguchi Y, Kimura T, et al. 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(2 Suppl):180-9.
28. Chiba K, Ogawa Y, Ishii K, et al. Long-term results of expansive open-door laminoplasty for cervical myelopathy--average 14-year follow-up study. Spine (Phila Pa 1976) 2006 31:2998-3005.
29. Tokuhashi Y, Ajiro Y, Umezawa N. A patient with two resurgeries for delayed myelopathy due to progression of ossification of the posterior longitudinal ligaments after cervical laminoplasty. Spine (Phila Pa 1976) 2009 34:E101-5.
30. Seichi A, Hoshino Y, Kimura A, et al. Neurological complications of cervical laminoplasty for patients with ossification of the posterior longitudinal ligament-a multi-institutional retrospective study. Spine (Phila Pa 1976) 2011 36:E998-1003.
31. Fargen KM, Cox JB, Hoh DJ. Does ossification of the posterior longitudinal ligament progress after laminoplasty? Radiographic and clinical evidence of ossification of the posterior longitudinal ligament lesion growth and the risk factors for late neurologic deterioration. J Neurosurg Spine 2012 17:512-24.