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| Value of Magnetic Resonance Imaging Parameters Combined with Lumbodorsal Surface Electromyography Parameters in Evaluating Postoperative Lumbar Function in Patients with Lumbar Spinal Stenosis |
| WANG Xiaolong, ZHANG Jianbao, ZHANG Xiyang |
| Zhengzhou Orthopedic Hospital, Zhengzhou Henan 450000 |
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Abstract 【Objective】 To evaluate the diagnostic value of combining magnetic resonance imaging (MRI) parameters with surface electromyography (sEMG) of the lumbar paraspinal muscles in assessing postoperative lumbar function in patients with lumbar spinal stenosis (LSS). 【Methods】 A total of 63 LSS patients who underwent endoscopic decompression surgery at our hospital between February 2023 and June 2024 were enrolled. Based on their lumbar functional outcomes at 3 months postoperatively, they were divided into an improvement group and a non-improvement group. Additionally, 31 healthy individuals of similar age who underwent routine physical examinations at the same period were selected as the control group. MRI parameters and sEMG parameters of the paraspinal muscles were compared among the three groups: the improvement group, non-improvement group at 3 months post-surgery and the control group during physical examination. The diagnostic value of MRI parameters and sEMG parameters for postoperative lumbar function was assessed using receiver operating characteristic (ROC) curve analysis. 【Results】 Among the 63 LSS patients, 30.16% (19/63) showed no improvement after surgery. The spinal canal area, sagittal diameter, transverse diameter, and dural sac area in both the control group and the improvement group were significantly larger than those in the non-improvement group. Similarly, the integrated electromyography (IEMG) and mean power frequency (MPF) values were higher in the improvement and control groups compared to the non-improvement group, with all differences being statistically significant (P<0.05). ROC analysis revealed that the combination of MRI parameters and sEMG parameters yielded higher accuracy, sensitivity, and specificity in diagnosing postoperative lumbar function in LSS patients compared to either MRI or sEMG alone. 【Conclusion】 The combined use of MRI parameters and sEMG of the lumbar paraspinal muscles has high diagnostic value for assessing postoperative lumbar function in LSS patients.
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Received: 19 January 2026
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2026, Vol. 43 
