• Jiayao Jiang, Haibin Wang, Liang Wang, Bangke Zhang, Qunfeng Guo, Wen Yuan, and Xuhua Lu.
• Department of Orthopaedics, Changzheng Hospital Affiliated to the Second Military Medical University, Shanghai, China.
• World Neurosurg. 2017 Mar 1; 99: 226-231.

ObjectivesTo analyze whether multifidus degeneration has a relationship with degenerative lumbar spinal stenosis (LSS).Materials And MethodsClinical data of 40 patients with LSS were analyzed retrospectively. Moreover, 40 healthy people were selected as controls. Subjects of both groups underwent a 1.5-T lumbar spinal magnetic resonance imaging scan in our hospital, and then the multifidus muscularity, fatty infiltration ratio, and bilateral asymmetry at L4/5 level on magnetic resonance imaging were measured with ImageJ software to analyze and compare the multifidus parameters between the 2 groups.ResultsCompared with the control group, the multifidus muscularity was lower, fatty infiltration ratio was greater, and muscle asymmetry was more significant at the L4/5 level in patients with LSS, and the difference between the 2 groups was statistically significant.ConclusionsMultifidus degeneration, including reduced volume, increased fatty infiltration, and bilateral muscle asymmetry, has an association with LSS.Copyright © 2016 Elsevier Inc. All rights reserved.

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