Abstract
Background
Although low back pain can be principally produced or increased during action, it may also be induced or enhanced in the morning after bed rest. During bed rest, tissue edema (increased water content) may occur. In this study, we measured the changes in water content in the intervertebral disc and the paravertebral muscle before and after bed rest using a magnetization transfer magnetic resonance imaging (MT-MRI) technique that permits measuring water content in tissues.
Methods
A total of 20 student volunteers were enrolled in this study. MT-MRI evaluation was performed before and after bed rest. To measure water content in the intervertebral disc and paravertebral muscle, two MRI sequences were performed using MT pulse-off and MT pulse-on. Based on the two images obtained, the equivalent cross-relaxation rate (ECR) was calculated.
Results
The ECR for intervertebral discs was significantly lower after bed rest than before bed rest (P < 0.01). The ECR for paravertebral equivalent cross-relaxation rate muscles was significantly higher after bed rest than before bed rest (P < 0.05).
Conclusion
We obtained results indicating that after bed rest the water content in the intervertebral disc and the paravertebral muscle was increased and decreased, respectively.
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References
Nakamura S, Takahashi K, Takahashi Y, Yamagata M, Moriya H. The afferent pathways of discogenic low-back pain: evaluation of L2 spinal nerve infiltration. J Bone Joint Surg Br 1996;78:606–612.
Jackson RP, Jacobs RR, Montesano PX. Volvo award in clinical sciences: Facet joint injection in low-back pain — a prospective statistical study. Spine 1988;13:966–971.
Taguchi T, Kawai S, Oda H, Kaneko K. Anatomical basis for selective nervi-spinales infiltration in the treatment of articular back pain. J Neuroradiol 2000;27:25–29.
Burdorf A, van Riel M, Snijders C. Trunk muscle strength measurements and prediction of low-back pain among workers. Clin Biomech 1992;7:55–58.
Matsushima S, Takasu A, Inai Y, Hirabayashi T, Era S, Sogami M, et al. Equivalent cross-relaxation rate imaging in the synthetic copolymer gels and invasive ductal carcinomas of the breast. Magn Reson Imaging 2002;20:285–293.
Tsukushi S, Takahashi M, Miyagi N, Matsushima S, Andoh M, Kinosada Y. Magnetization transfer ratios of musculoskeletal tumors. J Orthop Sci 2002;7:524–527.
Malko JA, Hutton WC, Fajman WA. An in vivo MRI study of the changes in volume (and fluid content) of the lumbar intervertebral disc after overnight bed rest and during an 8-hour walking protocol. J Spinal Disord Tech 2002;15:157–163.
Snook SH, Webster BS, McGorry RW, Fogleman MT, McCann KB. The reduction of chronic nonspecific low back pain through the control of early morning lumbar flexion: a randomized controlled trial. Spine 1998;23:2601–2607.
Snook SH, Webster BS, McGorry RW. The reduction of chronic, nonspecific low back pain through the control of early morning lumbar flexion: 3-year follow-up. J Occup Rehabil 2002;12:13–19.
Adams MA, Dolan P, Hutton WC. Diurnal Variations in the stresses on the lumbar spine. Spine 1987;12:130–137.
Konno S, Kikuchi S, Nagaosa Y. The relationship between intramuscular pressure of the paraspinal muscles and low back pain. Spine 1994;19:2186–2189.
Kauppila LI, Tallroth K. Postmortem angiographic findings for arteries supplying the lumbar spine: their relationship to low back symptoms. J Spinal Disord 1993;6:124–129.
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Matsumura, Y., Kasai, Y., Obata, H. et al. Changes in water content of intervertebral discs and paravertebral muscles before and after bed rest. J Orthop Sci 14, 45–50 (2009). https://doi.org/10.1007/s00776-008-1288-5
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DOI: https://doi.org/10.1007/s00776-008-1288-5