Abstract
Purpose
To propose a novel Modic grading scoring system and explore the relationship between the Modic grading score and disc degeneration, disc herniation, disc height, and clinical symptom scores.
Method
In total, 194 patients were included in the study. The new Modic grading scoring system included four indicators: invaded vertebral height, invaded endplate length, endplate morphology, and grade of endplate defects. The severity of Modic changes was visually quantified by numerical scores, and the kappa value was used to verify the interobserver and intraobserver reliability. Spearman correlation analysis was used to explore the relationship between the Modic grading score and intervertebral disc degeneration, disc herniation, disc height, and clinical symptom scores.
Results
The interobserver and intraobserver reliability showed substantial to almost perfect agreement in the new Modic grading scoring system. The Modic grading score was positively correlated with intervertebral disc degeneration (r = 0.757, p < 0.001) and negatively correlated with the intervertebral disc height index (r = − 0.231, p < 0.001). There was no significant correlation between the Modic grading scoring system and disc herniation (r = 0.369, p = 0.249). Additionally, there was no significant correlation between the Modic grading score and the Japanese Orthopaedic Association score (r = − 0.349, p = 0.25), Oswestry Disability Index score (r = 0.246, p = 0.11), or visual analogue scale score (r = 0.315, p = 0.35).
Conclusion
The new Modic grading scoring system had good interobserver and intraobserver reliability. The Modic grading score was positively correlated with intervertebral disc degeneration and negatively correlated with the intervertebral disc height.
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Data availability
The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported in part by the National Nature Science Foundation (81874022 and 82172483 to Xinyu Liu; 82102522 to Lianlei Wang), Key R & D Project of Shandong Province (2022CXGC010503 to Xinyu Liu), Shandong Natural Science Foundation (ZR202102210113 to Lianlei Wang) and Shandong Province Taishan Scholar Project (tsqn202211317 to Lianlei Wang).
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HL, LYY, XLG is responsible for data collection, statistical analysis and writing the main manuscript text. LLW, SMY and YHT is responsible for statistical analysis and revising article. XYL proposed the concept and revised article finally. All authors reviewed the manuscript.
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This study was approved by the ethics committee of Qilu Hospital of Shandong University [KYLL-2021(KS)-055]. All methods were carried out in accordance with relevant guidelines and regulations.
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Li, H., Yu, L., Gao, X. et al. Novel Modic grading scoring system and its clinical validation: a preliminary investigation. Eur Spine J 33, 84–92 (2024). https://doi.org/10.1007/s00586-023-08003-w
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DOI: https://doi.org/10.1007/s00586-023-08003-w