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Research Article: Analysis of the Efficacy of Percutaneous Endoscopic Interlaminar Discectomy for Lumbar Disc Herniation with Different Types/Grades of Modic Changes

Date Published: 2023-06-06

Abstract:
The incidence of lumbar disc herniation (LDH) has been increasing year by year, and about –% of patients have to undergo surgical treatment because conservative treatment is ineffective or pain seriously affects life. However, there is still considerable controversy regarding the treatment of LDH with Modic changes (MC) in the corresponding segment., MC were abnormal signal changes in the endplate and subendplate bone marrow on magnetic resonance imaging (MRI). According to these signal changes and histopathology, MC was divided into three types by Modic et al:, In patients with MC I, the endplate-vertebral interface is filled with vascular granulation tissue, which represents the inflammatory response of the bone marrow. MC II bone marrow space is replaced by fat. MC III is associated with subchondral osteosclerosis. In order to reduce the heterogeneity of the research, Udby et al, proposed that MC grade is more clinically meaningful than MC type. According to the proportion of cumulative vertebral body height of MC, the severity is divided into three grades. Current studies generally believe that MC are closely related to low back pain and vertebral instability. The traditional lumbar fenestration laminectomy surgery will undoubtedly further damage the stability of the lumbar spine. Although the fixed fusion surgery can deal with the degenerated endplate and restore the stability of the vertebral body, the surgical trauma is relatively destructive, and the changes in postoperative biomechanics make adjacent segments degenerate. To make matters worse, Li et al found that type II sclerotic MC can affect bone fusion in patients undergoing lumbar posterior surgery, Wang et al reported that MC increase the risk of Cage sinking. Therefore, the treatment of LDH with MC becomes particularly complicated.

Introduction:
The incidence of lumbar disc herniation (LDH) has been increasing year by year, and about –% of patients have to undergo surgical treatment because conservative treatment is ineffective or pain seriously affects life. However, there is still considerable controversy regarding the treatment of LDH with Modic changes (MC) in the corresponding segment. , MC were abnormal signal changes in the endplate and subendplate bone marrow on magnetic resonance imaging (MRI). According to these signal changes and…

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