{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T06:03:49Z","timestamp":1789625029900,"version":"build-2803163510"},"reference-count":30,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T00:00:00Z","timestamp":1789603200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Neurosci."],"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To investigate whether MRI-based paraspinal muscle morphology, assessed using the lumbar cross-sectional indentation value (LCIV), is associated with spinopelvic sagittal balance in patients with degenerative kyphosis (DK).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This retrospective case-control study included 81 patients with DK, defined as degenerative thoracolumbar kyphosis and\/or loss of lumbar lordosis, and 60 surgical controls with symptomatic lumbar spinal stenosis but without degenerative spinal deformity. LCIV was measured from T12-L1 to L4-L5 on axial T2-weighted MRI, and the mean LCIV (mLCIV) was calculated. Spinopelvic sagittal balance in the DK group was evaluated using pelvic incidence minus lumbar lordosis (PI-LL) mismatch and pelvic tilt (PT). Associations among mLCIV, body mass index (BMI), thoracolumbar kyphosis, lumbar lordosis, and PT were also analysed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Patients with DK had a lower mLCIV than controls (7.2 \u00b1 5.4 mm vs. 10.8 \u00b1 3.5 mm,\n                      <jats:italic>P<\/jats:italic>\n                      &amp;lt; 0.001). In the DK group, mLCIV was positively correlated with lumbar lordosis and BMI, and lumbar lordosis showed the stronger association in multivariate analysis. Patients with preserved PI-LL matching had a greater mLCIV than those with PI-LL mismatch (9.4 \u00b1 5.2 mm vs. 5.8 \u00b1 5.0 mm,\n                      <jats:italic>P<\/jats:italic>\n                      = 0.005). Similarly, patients with lower PT had a greater mLCIV than those with increased PT (8.5 \u00b1 5.0 mm vs. 5.7 \u00b1 5.4 mm,\n                      <jats:italic>P<\/jats:italic>\n                      = 0.028).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Lower mLCIV was observed in patients with PI-LL mismatch and increased PT, suggesting that lower LCIV may accompany spinopelvic sagittal imbalance and compensatory pelvic retroversion in DK. LCIV may provide a simple MRI-based measure of posterior paraspinal muscle contour in sagittal balance evaluation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fnins.2026.1896235","type":"journal-article","created":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T05:32:56Z","timestamp":1789623176000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["MRI-based lumbar cross-sectional indentation value is associated with spinopelvic sagittal balance in patients with degenerative kyphosis"],"prefix":"10.3389","volume":"20","author":[{"given":"Hongzhen","family":"Li","sequence":"first","affiliation":[{"name":"Department of Spine Surgery, Peking University People\u2019s Hospital","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuai","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Peking University People\u2019s Hospital","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chen","family":"Guo","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Peking University People\u2019s Hospital","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ke","family":"Ma","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics, Huailai County Hospital, Zhangjiakou","place":["Hebei, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haiying","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Peking University People\u2019s Hospital","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Liang","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Peking University People\u2019s Hospital","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,9,17]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"E968","DOI":"10.1097\/BSD.0000000000000480","article-title":"Assessment of the cross-sectional areas of the psoas major and multifidus muscles in patients with adult spinal deformity: A case-control study.","volume":"30","author":"Banno","year":"2017","journal-title":"Clin. 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