Dural tears in percutaneous endoscopic lumbar discectomy

Dural tears during spinal procedures are known complications, but their frequency and management in percutaneous endoscopic lumbar discectomy (PELD) remain understudied. Prior research has shown that dural tears can lead to neurological deficits if left undetected. However, the specific clinical patterns and outcomes of such tears in PELD have not been fully characterized. This gap motivated the collection of longitudinal data from a large patient cohort. No prior work had resolved the relationship between unrecognized dural tears and long-term neurological outcomes. The study aimed to address this uncertainty by analyzing a consecutive series of PELD cases. The focus was on identifying risk factors and clinical features that could improve recognition and management. This study contributes to the evidence base on spinal endoscopic complications. It offers insights into how to mitigate risks in increasingly complex spinal procedures.

The study aimed to describe the clinical features of dural tears during percutaneous endoscopic lumbar discectomy (PELD) and to explore strategies for preventing this complication. The researchers focused on a consecutive cohort of patients to ensure comprehensive data collection. They sought to evaluate the frequency and outcomes of dural tears in PELD procedures. The goal was to identify patterns in symptom presentation and management approaches. The study also aimed to determine whether unrecognized tears could lead to neurological deficits. By analyzing follow-up data, the researchers intended to assess long-term outcomes. Their findings could inform best practices for minimizing risks in spinal endoscopic surgery. The results may guide clinicians in improving procedural safety.

The study analyzed data from 816 consecutive patients who underwent PELD between 2003 and 2007. Researchers identified nine cases of symptomatic dural tears, representing 1.1% of the cohort. Clinical outcomes were assessed using the visual analogue scale (VAS), the Oswestry disability index (ODI), and modified MacNab criteria. Symptom patterns were categorized based on intraoperative detection and postoperative recognition. The researchers evaluated whether classical signs like CSF leakage were present. They also examined whether unrecognized tears led to complications like nerve root herniation. Follow-up data were collected over an average of 30.8 months. The study combined clinical observation with outcome metrics to assess long-term effects.

Nine patients (1.1%) experienced dural tears during PELD. Intractable radicular pain was the most common symptom, while CSF leakage was rare. Three tears were detected intraoperatively, and six were not recognized until postoperatively. Among the unrecognized cases, two patients developed nerve root herniation and neurological deficits. All nine patients required secondary open repair surgeries. The mean VAS score for leg pain improved from 8.3 to 2.6. Back pain scores improved from 4.1 to 2.6. The mean ODI improved from 69.6 to 29.2%. Outcomes were excellent in one case, good in five, fair in one, and poor in two.

The study found that dural tears during PELD are uncommon but can lead to significant complications if undetected. The authors propose that intractable radicular pain is a key indicator of dural tears. They suggest that classical signs like CSF leakage are rare and may not reliably signal a tear. The researchers emphasize the importance of intraoperative detection to prevent long-term neurological damage. Secondary open repair was necessary in all cases, highlighting the need for prompt intervention. The authors propose that expanding the use of PELD to complex cases may increase the risk of dural tears. They recommend that surgeons prioritize accurate information and proper technical considerations. Their findings suggest that preventing this complication requires improved recognition and management strategies.