2. Cheng JS, Forbes J, Wong C, et al. The epidemiology of adult spinal deformity and the aging population. In: Wang M, Lu Y, Anderson D, editors. Minimally invasive spinal deformity surgery. Vienna: Springer; 2014. p.3-10.
3. Bernstein DN, Thirukumaran C, Saleh A, et al. Complications and readmission after cervical spine surgery in elderly patients: an analysis of 1786 patients. World Neurosurg 2017 103:859. -68. e8.
4. Hyun KR, Kang S, Lee S. Population aging and healthcare expenditure in Korea. Health Econ 2016 25:1239-51.
5. Nouri A, Tetreault L, Singh A, et al. Degenerative cervical myelopathy: epidemiology, genetics, and pathogenesis. Spine (Phila Pa 1976) 2015 40:E675-93.
7. Radcliff K, Ong KL, Lovald S, et al. Cervical spine surgery complications and risks in the elderly. Spine (Phila Pa 1976) 2017 42:E347-54.
8. Smith GW, Robinson RA. The treatment of certain cervicalspine disorders by anterior removal of the intervertebral disc and interbody fusion. J Bone Joint Surg Am 1958 40-A:607-24.
11. Odom GL, Finney W, Woodhall B. Cervical disk lesions. J Am Med Assoc 1958 166:23-8.
12. Cloyd JM, Acosta FL Jr, Ames CP. Complications and outcomes of lumbar spine surgery in elderly people: a review of the literature. J Am Geriatr Soc 2008 56:1318-27.
17. Li G, Patil CG, Lad SP, et al. Effects of age and comorbidities on complication rates and adverse outcomes after lumbar laminectomy in elderly patients. Spine (Phila Pa 1976) 2008 33:1250-5.
18. Veeravagu A, Connolly ID, Lamsam L, et al. Surgical outcomes of cervical spondylotic myelopathy: an analysis of a national, administrative, longitudinal database. Neurosurg Focus 2016 40:E11.
19. Buerba RA, Giles E, Webb ML, et al. Increased risk of complications after anterior cervical discectomy and fusion in the elderly: an analysis of 6253 patients in the American College of Surgeons National Surgical Quality Improvement Program database. Spine (Phila Pa 1976) 2014 39:2062-9.
20. Cho SK, Lu Y, Lee DH. Dysphagia following anterior cervical spinal surgery: a systematic review. Bone Joint J 2013 95-B:868-73.
23. Wang MC, Chan L, Maiman DJ, et al. Complications and mortality associated with cervical spine surgery for degenerative disease in the United States. Spine (Phila Pa 1976) 2007 32:342-7.
24. Kiebzak GM. Age-related bone changes. Exp Gerontol 1991 26:171-87.
26. Schmieder K, Wolzik-Grossmann M, Pechlivanis I, et al. Subsidence of the wing titanium cage after anterior cervical interbody fusion: 2-year follow-up study. J Neurosurg Spine 2006 4:447-53.
28. Lee YS, Kim YB, Park SW. Risk factors for postoperative subsidence of single-level anterior cervical discectomy and fusion: the significance of the preoperative cervical alignment. Spine (Phila Pa 1976) 2014 39:1280-7.
31. Marawar S, Girardi FP, Sama AA, et al. National trends in anterior cervical fusion procedures. Spine (Phila Pa 1976) 2010 35:1454-9.