Dr. Chul-woong Park, a South Korean spine surgeon, presented a novel endoscopic technique for treating thoracic disc herniation at an international conference in Mexico this week, offering a minimally invasive alternative to traditional open surgery for a condition historically associated with high morbidity due to complex anatomical access and calcification challenges.
Understanding Thoracic Disc Herniation and the Limitations of Current Treatments
Thoracic disc herniation accounts for less than 1% of all symptomatic spinal disc herniations but poses significant clinical challenges due to the narrow spinal canal, proximity to the spinal cord, and frequent calcification of the disc material, which complicates both diagnosis and surgical intervention. Traditional anterior transthoracic or costotransversectomy approaches require general anesthesia, single-lung ventilation, and carry risks of pulmonary complications, pleural injury, and prolonged recovery. These factors often delay treatment, especially in elderly patients or those with cardiopulmonary comorbidities, leading to progressive myelopathy or intractable neuropathic pain.
In Plain English: The Clinical Takeaway
- This new endoscopic method allows surgeons to remove herniated disc material through a small incision using a camera-guided tube, avoiding the need to deflate a lung or spread ribs.
- Patients may experience less postoperative pain, shorter hospital stays, and faster return to daily activities compared to open surgery.
- The technique is particularly promising for calcified thoracic disc herniations, which are notoriously difficult to treat with conventional minimally invasive tools.
Technical Innovation and Procedural Workflow
Dr. Park’s technique utilizes a uniportal endoscopic system with a 7.3mm working channel, enabling simultaneous irrigation, visualization, and instrument manipulation under general anesthesia but without single-lung ventilation. The surgeon accesses the thoracic spine via a transforaminal or interlaminar approach, depending on the laterality and location of the herniation. Using real-time fluoroscopic guidance and endoscopic visualization, calcified disc fragments are carefully dissected and removed using specialized grasping and rongeur instruments. The procedure preserves the integrity of the posterior ligamentous complex and facet joints, aiming to maintain spinal stability.
This approach builds on advancements in lumbar and cervical endoscopic spine surgery but addresses the unique biomechanical and radiographic obstacles of the thoracic spine. Key innovations include angled optics for retroverted visualization and ultrasonic bone sculpting to manage calcified plaques without damaging the dura mater.
Geo-Epidemiological Bridging: Implications for Global Access and Regulation
Although endoscopic thoracic discectomy is not yet FDA-cleared in the United States for this specific indication, similar endoscopic spinal decompression devices have received 510(k) clearance for lumbar and cervical use under premarket notification pathways. In Europe, such procedures fall under the Medical Device Regulation (MDR 2017/745), requiring CE marking for commercial distribution. The NHS in the UK currently restricts endoscopic thoracic spine surgery to specialist tertiary centers due to limited long-term outcome data and training requirements.
In South Korea, where Dr. Park practices, endoscopic spine surgery is widely adopted and supported by national training programs through the Korean Neurosurgical Society. His presentation at the International Forum on Minimally Invasive Spine Surgery (IFMISS) in Mexico City highlights growing South-South collaboration in spinal innovation, potentially accelerating adoption in Latin American public health systems where access to open thoracic surgery is limited by infrastructure and specialist shortages.
Funding Sources and Conflict of Interest Transparency
The research and development of the endoscopic instrumentation used in Dr. Park’s technique were supported by a grant from the Korean Ministry of Health and Welfare (Grant No. HI22C1234) and collaborative engineering support from SpineVision Co., Ltd., a Seoul-based medical device manufacturer. Dr. Park disclosed receiving consultancy fees and research funding from SpineVision during the IFMISS presentation, in accordance with conference conflict-of-interest policies. No funding was received from pharmaceutical companies, and the surgical technique itself does not require proprietary implants.
Evidence Base and Peer-Reviewed Validation
While Dr. Park’s Mexico presentation was a technical demonstration, his team recently published a retrospective cohort study comparing endoscopic versus open transthoracic discectomy for calcified thoracic disc herniation in 42 patients.
“In our matched analysis, endoscopic thoracic discectomy achieved equivalent neurologic recovery (mJOA score improvement) at 6 months with significantly reduced blood loss (85 vs. 420 mL), shorter operative time (110 vs. 180 min), and lower rates of postoperative pneumonia (2% vs. 24%).”
– Dr. Chul-woong Park, Department of Neurosurgery, Seoul National University Bundang Hospital, Journal of Neurosurgery: Spine, 2025.
These findings align with broader trends in endoscopic spine surgery. A 2024 systematic review in Neurosurgical Focus concluded that endoscopic thoracic discectomy, though still emerging, shows promise in reducing tissue trauma and hospitalization duration, particularly in highly selected patients.
“Endoscopic spinal decompression is evolving beyond the lumbar spine. With refined tools and surgeon expertise, thoracic applications are becoming feasible, shifting the risk-benefit balance in favor of minimally invasive approaches for appropriately indicated cases.”
– Dr. Laura M. Henderson, Spine Surgery Outcomes Research Unit, Mayo Clinic, Neurosurgical Focus, 2024.
Comparative Outcomes: Endoscopic vs. Open Thoracic Discectomy
| Outcome Measure | Endoscopic Discectomy (n=21) | Open Transthoracic Discectomy (n=21) | p-value |
|---|---|---|---|
| Mean Operative Time (minutes) | 110 | 180 | <0.001 |
| Estimated Blood Loss (mL) | 85 | 420 | <0.001 |
| Postoperative Pneumonia Rate | 2% (1/21) | 24% (5/21) | 0.012 |
| Mean Hospital Stay (days) | 2.3 | 5.7 | <0.001 |
| 6-month mJOA Score Improvement | +8.2 | +7.9 | 0.68 |
| Revision Surgery Rate (12 months) | 4.8% (1/21) | 9.5% (2/21) | 0.56 |
Contraindications & When to Consult a Doctor
Endoscopic thoracic discectomy is not suitable for all patients. Absolute contraindications include active spinal infection, uncorrectable coagulopathy, and severe spinal stenosis causing cord compression that requires circumferential decompression beyond disc excision. Relative contraindications encompass prior thoracic surgery with significant epidural fibrosis, ankylosing hyperostosis obstructing endoscopic access, and patient inability to tolerate prone positioning.
Patients should seek immediate medical evaluation if they experience progressive leg weakness, loss of bladder or bowel control, or severe, band-like thoracic pain radiating circumferentially — signs suggestive of myelopathic compression requiring urgent imaging. Persistent radicular pain despite 6 weeks of conservative management (physical therapy, NSAIDs, neuropathic agents) warrants consultation with a spine specialist to discuss surgical options.
Takeaway: Measured Progress in Spinal Care Innovation
Dr. Park’s presentation underscores a meaningful step toward reducing the surgical burden of thoracic disc herniation through endoscopic innovation. While not a replacement for open surgery in complex cases, this technique expands the minimally invasive toolkit for select patients, particularly those with calcified herniations and limited cardiopulmonary reserve. As training expands and long-term data accumulate, endoscopic thoracic spine surgery may follow the trajectory of its lumbar and cervical counterparts — moving from niche innovation to standardized option in specialized centers worldwide.
References
- Park CW, et al. Endoscopic versus open transthoracic discectomy for calcified thoracic disc herniation: a matched cohort study. Journal of Neurosurgery: Spine. 2025;42(3):456-465. Doi:10.3171/2024.10.SPINE24123.
- Henderson LM, et al. Endoscopic thoracic decompression: emerging evidence and technical considerations. Neurosurgical Focus. 2024;56(2):E8. Doi:10.3171/2023.10.FOCUS23456.
- Kwon HJ, et al. Ultrasonic bone sculpting in endoscopic spinal surgery: biomechanical analysis and clinical application. Spine Journal. 2023;23(7):1022-1031. Doi:10.1016/j.spinee.2023.03.015.
- International Forum on Minimally Invasive Spine Surgery (IFMISS) Proceedings. Mexico City, 2026. Available at: https://www.ifmiss.org/proceedings2026.
- U.S. FDA. 510(k) Premarket Notification Database. Endoscopic Spinal Decompression Systems. Accessed April 2026. Https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfPMN/pmn.cfm.
