Journal
SCIENTIFIC REPORTS
Volume 11, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41598-021-00116-w
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Funding
- Ministry of Health, Labor and Welfare [18K17391, 201417014A, H22-Choujyu-Wakate-007, 19FA1007]
- Japan Society for the Promotion of Science KAKENHI [B26293139, B23390172, B2629333, C20591774, C26462249, 20K09509, 19H05654, 19K06932, C16K10834, C25462305, B25860448, 15K15219, 26670307, 24659666]
- Ministry of Education, Culture, Sports, Science and Technology in Japan [08033011-00262]
- Grants-in-Aid for Scientific Research [19K06932, 19H05654, 20K09509, 26670307, 18K17391] Funding Source: KAKEN
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The study found a relationship between sagittal spinal malalignment and low back pain, with older participants having higher C7 SVA values, higher prevalence of LBP, and decreased physical performance. Multiple linear regression analysis showed that LBP and physical performance were significantly associated with C7 SVA.
Studies have suggested a relationship between sagittal spinal malalignment and low back pain (LBP). The current study investigated the relationship of spinal alignment with LBP and physical performance in 1491 individuals who attended the second follow-up visit of the Wakayama Spine Study. The sagittal vertical axis at C7 (C7 SVA) was measured by a spine surgeon. The occurrence of LBP within one month, pain intensity, Oswestry Disability Index (ODI), and physical performance (grip strength, 6-m walking time, chair stand test, one-leg standing test) were also evaluated. LBP in the previous month was determined using ODI, and indicators of physical performance were measured. The mean C7 SVA was 11.0 +/- 42.7 mm and was significantly greater in older participants (p < 0.001). LBP was more prevalent in participants with a greater C7 SVA (< 40 mm, 35.7%; 40-95 mm, 47.3%; >= 95 mm, 59.4%; p < 0.001) and those with a higher ODI score (10.0%, 17.5%, and 29.4%, respectively; p < 0.001). Physical performance significantly decreased in participants with a greater C7 SVA (p < 0.001). Multiple linear regression analysis revealed that LBP and physical performance were significantly associated with C7 SVA (p < 0.001). Thus, sagittal spinal malalignment may lead to LBP and decreased physical performance.
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