The Orphaned Innovation: Cost, Structural Barriers, and Global System Shifts Prompting Reimbursement Reform in Endoscopic Spine Surgery-Insights From 1.2 Million Cases.

BACKGROUND

Endoscopic spine surgery (ESS) is increasingly recognized for its clinical efficacy and patient-centered advantages, including reduced morbidity and faster recovery. However, despite growing global interest, its adoption remains highly variable, shaped more by systemic, economic, and institutional forces than by technical limitations.

OBJECTIVE

To evaluate global adoption barriers to ESS using psychometrically validated tools and identify region-specific structural disparities through Rasch analysis and differential item functioning (DIF).

METHODS

A cross-sectional global survey was conducted among 1834 spine surgeons. Of the 1040 individuals who began the survey, 438 (42.6%) from 46 countries completed the survey. A 27-item instrument assessed access, reimbursement, training infrastructure, and institutional support for ESS. Rasch rating scale modeling was used to test internal validity, unidimensionality, and item fit. DIF analysis and 1-way analysis of variance were performed to detect region-specific biases in item responses. Respondents were stratified by country and region, including China, India, Brazil, the United States, Latin America, and Europe.

RESULTS

Collectively, the responding surgeons reported an extrapolated cumulative experience of 1,286,496 endoscopic spine procedures, suggesting that responses were anchored in substantial clinical experience. Rasch analysis confirmed acceptable model fit. DIF analysis revealed strong regional disparities. Surgeons in China and India reported high institutional support, better training access, and fewer reimbursement obstacles, suggesting high system adaptability. Conversely, respondents from the United States and Latin America cited limited training integration, poor reimbursement, and institutional inertia. Europe exhibited a structural stalemate driven by low surgeon compensation and excessive bureaucratic gatekeeping. Despite these differences, surgeon and patient interest in ESS remained uniformly high across regions, identifying shared global momentum for minimally invasive innovation.

CONCLUSIONS

The global diffusion of ESS is hindered less by clinical limitations than by systemic inertia and fragmented policy frameworks. Countries with flexible, market-responsive systems (eg, China and India) are emerging as innovation leaders, while historically dominant regions (eg, United States and Europe) risk stagnation without structural reform. ESS serves as a diagnostic lens for broader health system adaptability, highlighting the urgent need for investment in training, reimbursement reform, and institutional endorsement. This study provides level II evidence that endoscopic lumbar decompression is a surgical work comparable to open techniques and should be valued accordingly. Grounded in more than 1.2 million cases and expert consensus, this study supports policy recommendations to retire Current Procedural Terminology 62380 and to adopt reimbursement frameworks based on surgical work rather than visualization method.

LEVEL OF EVIDENCE: While this study cannot be reclassified in the strict Oxford Centre for Evidence-Based Medicine hierarchy, the authors employ the following analogy: Rasch/DIF methods filter bias in the same way randomization filters bias in clinical trials. While it relies on self-reported surgeon data rather than direct clinical outcomes, the application of Rasch modeling and DIF analysis strengthens internal validity and minimizes measurement bias. Importantly, surgeon responses were anchored in an extrapolated cumulative experience of more than 1.28 million endoscopic spine procedures, reflecting deeply internalized clinical judgment rather than anecdotal opinion. These methodological features distinguish the study from unvalidated descriptive surveys and support its classification as higher-level clinical evidence-offering a filtered and reliable lens into global surgical practice patterns and systemic barriers to ESS adoption. Based on its cross-sectional observational design enhanced by validated psychometric methodology, the authors consider this survey study a psychometrically validated, high-quality observational survey study.

CLINICAL RELEVANCE: This study identifies structural and systemic barriers that limit global adoption of ESS and highlights key targets-such as training, reimbursement, and institutional support-for improving access and accelerating safe implementation.