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ENGLISH ABSTRACT
JOURNAL ARTICLE
[EFFECTIVENESS OF PERCUTANEOUS ENDOSCOPIC TRANSFORAMINAL DISCECTOMY FOR RECURRENT LUMBAR DISC HERNIATION].
OBJECTIVE: To determine the feasibility and effectiveness of percutaneous endoscopic transforaminal discectomy (PETD) for recurrent lumbar disc herniation (RLDH).
METHODS: Between June 2009 and December 2011, 56 patients with RLDH underwent PETD after local anesthesia, including 30 males and 26 females, with a mean age of 50 years (range, 24-70 years). The involved segments were L3, 4 in 3 cases, L4, 5 in 34 cases, and L5-S1 in 19 cases. Of 56 patients, 48 suffered from ipsilateral re-herniation, and 8 suffered from contralateral re-herniation. All the patients had a mean pain-free interval of 5.5 years (range, 6 months to 27 years). The visual analogue scale (VAS) score for back pain was 6.18 ± 1.44 and the VAS score for leg pain was 7.66 ± 1.03. Postoperative effectiveness was assessed based on the VAS score and modified MacNab criteria.
RESULTS: The mean operation time was 60.4 minutes (range, 30-100 minutes) and the mean duration of hospital stay was 5.1 days (range, 3-6 days). All patients were followed up 28.2 months on average (range, 24-56 months). Patients obtained immediate pain relief postoperatively. The postoperative VAS scores of back and leg pain at 1 month, 3 months, 12 months, and last follow-up were significantly decreased when compared with preoperative score (P < 0.05). Based on the modified MacNab criteria, the results were excellent in 39 cases, good in 9 cases, fair in 5 cases, and poor in 3 cases at 12 months after operation, and the excellent and good rate was 85.7%. Surgery-related complications were found in 5 cases (8.9%); one patient (1.8%) suffered from recurrence at 18 months postoperatively, and the symptom was relieved after open lumbar discectomy and intervertebral fusion surgery.
CONCLUSION: PETD has several advantages in treating RLDH, such as avoiding from the old scar tissue, decreasing operation-related complications, shortening operation time, reducing trauma, and obtaining rapid postoperative recovery. This technique is feasible and effective for RLDH.
METHODS: Between June 2009 and December 2011, 56 patients with RLDH underwent PETD after local anesthesia, including 30 males and 26 females, with a mean age of 50 years (range, 24-70 years). The involved segments were L3, 4 in 3 cases, L4, 5 in 34 cases, and L5-S1 in 19 cases. Of 56 patients, 48 suffered from ipsilateral re-herniation, and 8 suffered from contralateral re-herniation. All the patients had a mean pain-free interval of 5.5 years (range, 6 months to 27 years). The visual analogue scale (VAS) score for back pain was 6.18 ± 1.44 and the VAS score for leg pain was 7.66 ± 1.03. Postoperative effectiveness was assessed based on the VAS score and modified MacNab criteria.
RESULTS: The mean operation time was 60.4 minutes (range, 30-100 minutes) and the mean duration of hospital stay was 5.1 days (range, 3-6 days). All patients were followed up 28.2 months on average (range, 24-56 months). Patients obtained immediate pain relief postoperatively. The postoperative VAS scores of back and leg pain at 1 month, 3 months, 12 months, and last follow-up were significantly decreased when compared with preoperative score (P < 0.05). Based on the modified MacNab criteria, the results were excellent in 39 cases, good in 9 cases, fair in 5 cases, and poor in 3 cases at 12 months after operation, and the excellent and good rate was 85.7%. Surgery-related complications were found in 5 cases (8.9%); one patient (1.8%) suffered from recurrence at 18 months postoperatively, and the symptom was relieved after open lumbar discectomy and intervertebral fusion surgery.
CONCLUSION: PETD has several advantages in treating RLDH, such as avoiding from the old scar tissue, decreasing operation-related complications, shortening operation time, reducing trauma, and obtaining rapid postoperative recovery. This technique is feasible and effective for RLDH.
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