Rim enhancement on MRI predicts long-term outcomes in extruded/migrated lumbar disc herniation managed with an inflammation-preserving protocol: a 6-year prospective cohort study

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The study enrolled 66 patients with extruded or migrated lumbar disc herniation treated with an inflammation-preserving protocol over 6 years.
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Patients were divided into Rim Enhancement Positive and Rim Enhancement Negative groups based on pre-treatment MRI findings.
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Statistically significant differences in herniation volume and resorption rates were observed between the two groups at 1 and 3 years post-treatment.
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Improvement rates in clinical outcomes, including JOA scores and ODI, showed significant differences between the two groups at the 6-year follow-up.
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Rim enhancement on MRI served as a prognostic indicator for nucleus pulposus resorption and symptomatic improvement in patients.

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