Letter to the Editor Regarding,“Predictors and Postoperative Complication Risks for Revision Discectomies Following Primary Lumbar Microdiscectomy” by Ton et al. and “Risk Factors and Reoperation Rate in Revision Lumbar Disc Herniation Surgery” by Samir et al.

To the Editor,

We read with great interest the studies by Ton et al. and Samir et al., which together analyze revision risks in over 1,080,000 patients.^1,2 We commend the authors for providing such robust clinical baselines for risk stratification in spinal surgery. The convergence of data across these large-scale populations suggests that risk factors like obesity, diabetes, and male gender are not merely isolated variables, but clinical manifestations of a unified pathological process. Recent evidence underscores that intervertebral disc (IVD) integrity relies on a delicate homeostatic balance between mechanical loading and metabolic transport. ³ Specifically, patient-personalized models demonstrate that decreased disc height and strain-dependent solute diffusivity significantly impair the transport of essential nutrients like glucose, while promoting the toxic accumulation of metabolic byproducts such as lactate.^4,5 The vertebral endplate serves as the critical gateway for this exchange, and its structural compromise under chronic stress triggers a metabolic-mechanical failure cascade. ⁶

Building upon these significant findings, we propose that these patients may be suffering from a self-perpetuating cycle we term “Lumbar Attritional Collapse (LAC) Syndrome.” In LAC Syndrome, chronic mechanical loading “crushes” the disc’s structural integrity, which in turn impairs the metabolic supply chain, further reducing mechanical resilience and leading to a vicious cycle of segmental collapse. The fact that reoperation rates remain stagnant around 8% despite surgical advances suggests that LAC Syndrome represents a state where the segmental homeostatic capacity is permanently exceeded. In terms of future directions, we believe research should shift toward a tiered strategy: prioritizing biological restoration and halting the LAC cycle through regeneration when metabolic indicators permit, or opting for definitive stabilization—such as minimally invasive fusion—when the segment has reached an irreversible collapse. The comprehensive data provided by Ton et al. and Samir et al. serves as a powerful springboard for identifying which patients are trapped in this “collapse” and require more than a simple discectomy for a permanent solution.

Respectfully.