1. Cheung KM, Karppinen J, Chan D, et al. Prevalence and pattern of lumbar magnetic resonance imaging changes in a population study of one thousand forty-three individuals. Spine (Phila Pa 1976) 2009 34:934–940. PMID:
19532001.
2. Jensen MC, Brant-Zawadzki MN, Obuchowski N, Modic MT, Malkasian D, Ross JS. Magnetic resonance imaging of the lumbar spine in people without back pain. N Engl J Med 1994 331:69–73. PMID:
8208267.
3. Powell MC, Wilson M, Szypryt P, Symonds EM, Worthington BS. Prevalence of lumbar disc degeneration observed by magnetic resonance in symptomless women. Lancet 1986 2:1366–1367. PMID:
2878228.
4. Nachemson A, Lewin T, Maroudas A, Freeman MA. In vitro diffusion of dye through the end-plates and the annulus fibrosus of human lumbar inter-vertebral discs. Acta Orthop Scand 1970 41:589–607. PMID:
5516549.
5. Holm S, Nachemson A. Variations in the nutrition of the canine intervertebral disc induced by motion. Spine (Phila Pa 1976) 1983 8:866–874. PMID:
6670021.
6. Oda H, Matsuzaki H, Tokuhashi Y, Wakabayashi K, Uematsu Y, Iwahashi M. Degeneration of intervertebral discs due to smoking: experimental assessment in a rat-smoking model. J Orthop Sci 2004 9:135–141. PMID:
15045541.
7. Takatalo J, Karppinen J, Taimela S, et al. Body mass index is associated with lumbar disc degeneration in young Finnish males: subsample of Northern Finland birth cohort study 1986. BMC Musculoskelet Disord 2013 14:87PMID:
23497297.
8. Weiler C, Lopez-Ramos M, Mayer HM, et al. Histological analysis of surgical lumbar intervertebral disc tissue provides evidence for an association between disc degeneration and increased body mass index. BMC Res Notes 2011 4:497PMID:
22087871.
9. McCarthy SM, Filly RA, Stark DD, et al. Obstetrical magnetic resonance imaging: fetal anatomy. Radiology 1985 154:427–432. PMID:
3966129.
10. Ergun T, Lakadamyali H, Sahin MS. The relation between sagittal morphology of the lumbosacral spine and the degree of lumbar intervertebral disc degeneration. Acta Orthop Traumatol Turc 2010 44:293–299. PMID:
21252606.
11. Kanat A, Yazar U, Kazdal H, Sonmez OF. Introducing a new risk factor for lumbar disc herniation in females: vertical angle of the sacral curvature. J Korean Neurosurg Soc 2012 52:447–451. PMID:
23323164.
12. Pfirrmann CW, Metzdorf A, Zanetti M, Hodler J, Boos N. Magnetic resonance classification of lumbar intervertebral disc degeneration. Spine (Phila Pa 1976) 2001 26:1873–1878. PMID:
11568697.
13. Takatalo J, Karppinen J, Niinimaki J, et al. Prevalence of degenerative imaging findings in lumbar magnetic resonance imaging among young adults. Spine (Phila Pa 1976) 2009 34:1716–1721. PMID:
19770614.
14. Takatalo J, Karppinen J, Taimela S, et al. Association of abdominal obesity with lumbar disc degeneration--a magnetic resonance imaging study. PLoS One 2013 8:e56244PMID:
23418543.
15. Osterman K, Osterman H. Experimental lumbar spondylolisthesis in growing rabbits. Clin Orthop Relat Res 1996 (332): 274–280. PMID:
8913172.
16. Battie MC, Videman T. Lumbar disc degeneration: epidemiology and genetics. J Bone Joint Surg Am 2006 88(Suppl 2): 3–9. PMID:
16595435.
17. Videman T, Battie MC, Parent E, Gibbons LE, Vainio P, Kaprio J. Progression and determinants of quantitative magnetic resonance imaging measures of lumbar disc degeneration: a five-year follow-up of adult male monozygotic twins. Spine (Phila Pa 1976) 2008 33:1484–1490. PMID:
18475246.
18. Williams FM, Popham M, Sambrook PN, Jones AF, Spector TD, MacGregor AJ. Progression of lumbar disc degeneration over a decade: a heritability study. Ann Rheum Dis 2011 70:1203–1207. PMID:
21402564.
19. Hassett G, Hart DJ, Manek NJ, Doyle DV, Spector TD. Risk factors for progression of lumbar spine disc degeneration: the Chingford Study. Arthritis Rheum 2003 48:3112–3117. PMID:
14613273.
20. Hangai M, Kaneoka K, Kuno S, et al. Factors associated with lumbar intervertebral disc degeneration in the elderly. Spine J 2008 8:732–740. PMID:
18037353.
21. Liuke M, Solovieva S, Lamminen A, et al. Disc degeneration of the lumbar spine in relation to overweight. Int J Obes (Lond) 2005 29:903–908. PMID:
15917859.
22. Bastiaanssen JM, de Bie RA, Bastiaenen CH, Essed GG, van den Brandt PA. A historical perspective on pregnancy-related low back and/or pelvic girdle pain. Eur J Obstet Gynecol Reprod Biol 2005 120:3–14. PMID:
15866079.
23. Kovacs FM, Garcia E, Royuela A, Gonzalez L, Abraira V. Spanish Back Pain Research Network. Prevalence and factors associated with low back pain and pelvic girdle pain during pregnancy: a multicenter study conducted in the Spanish National Health Service. Spine (Phila Pa 1976) 2012 37:1516–1533. PMID:
22333958.
24. Mogren IM, Pohjanen AI. Low back pain and pelvic pain during pregnancy: prevalence and risk factors. Spine (Phila Pa 1976) 2005 30:983–991. PMID:
15834344.
25. Gruber HE, Buchanan L, Ingram JA, Zinchenko N, Norton HJ, Hanley EN Jr. The relationship between pregnancy-associated plasma protein-A (PAPP-A) and human intervertebral disc degeneration. Histol Histopathol 2010 25:1431–1436. PMID:
20865665.
26. Svensson HO, Andersson GB, Hagstad A, Jansson PO. The relationship of low-back pain to pregnancy and gynecologic factors. Spine (Phila Pa 1976) 1990 15:371–375. PMID:
2141952.
27. Livshits G, Popham M, Malkin I, et al. Lumbar disc degeneration and genetic factors are the main risk factors for low back pain in women: the UK Twin Spine Study. Ann Rheum Dis 2011 70:1740–1745. PMID:
21646416.
28. Mens JM, Pool-Goudzwaard A, Stam HJ. Mobility of the pelvic joints in pregnancy-related lumbopelvic pain: a systematic review. Obstet Gynecol Surv 2009 64:200–208. PMID:
19228440.
29. Dumas GA, Reid JG, Wolfe LA, Griffin MP, McGrath MJ. Exercise, posture, and back pain during pregnancy. Clin Biomech (Bristol, Avon) 1995 10:98–103.
30. Calleja-Agius J, Muscat-Baron Y, Brincat MP. Estrogens and the intervertebral disc. Menopause Int 2009 15:127–130. PMID:
19723683.