scholarly journals Clinical Outcomes of Trans-Sacral Epiduroscopic Laser Decompression (SELD) in Patients with Lumbar Disc Herniation

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Seong Son ◽  
Sang Gu Lee ◽  
Yong Ahn ◽  
Woo Kyung Kim
Keyword(s):  
Clinical Outcomes ◽  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Leg Pain ◽  
Herniated Disc ◽  
Low Back ◽  
Invasive Treatment ◽  
Disc Disease

Objective. Nowadays, trans-sacral epiduroscopic laser decompression (SELD) using slender epiduroscopy and laser is one of the preferred options for minimally invasive treatment in lumbar disc diseases. However, SELD is still in the initial stages of the global field of spine surgery, and the clinical outcomes in patients with lumbar disc herniation are not established yet. Therefore, the authors investigated patients undergoing SELD to report the clinical results. Methods. Between November 2015 and November 2018, a total of 82 patients who underwent single-level SELD for lumbar disc herniation with a minimum follow-up of 6.0 months were enrolled. A retrospective review of clinical data was conducted. Clinical outcomes were evaluated using the visual analogue scale (VAS) for low back and leg pain and Odom’s criteria. Also, surgical outcomes, including complications and symptom recurrences, and radiological outcomes were analyzed. Results. Low back pain and leg pain as determined by the VAS improved from an average of 5.43 ± 1.73 and 6.10 ± 1.67 to 2.80 ± 1.43 and 3.58 ± 2.08 at the final follow-up (p<0.001). According to Odom’s criteria, the success rate defined as excellent or good results at the final follow-up was 58.5%. There were no surgery-related complications such as neurologic deficits, infection, or epidural hematomas, except for transient mild paralysis in 3 patients and procedure-related nuchal pain in 2 patients. The rate of additional procedures was 17.0% (6 patients received revision surgery and 8 patients received an additional nerve block) during the follow-up. Conclusion. Our findings showed that SELD for lumbar herniated disc disease achieved less favorable clinical outcomes compared with those of previous studies. Further study is needed to clarify the influencing factors on the clinical outcomes of SELD.

scholarly journals Application of a targeted and quantificational foraminoplasty device in percutaneous transforaminal endoscopic discectomy for L5–S1 disc herniation: preliminary clinical outcomes

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Jinlong Liu ◽  
Junlong Wu ◽  
Honglei Zhang ◽  
Rui Zuo ◽  
Jiabin Liu ◽  
...  
Keyword(s):  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Leg Pain ◽  
Fluoroscopy Time ◽  
Low Back ◽  
Vas Score ◽  
Endoscopic Discectomy ◽  
Percutaneous Transforaminal Endoscopic Discectomy

Abstract Objective Percutaneous transforaminal endoscopic discectomy (PTED) is minimally invasive and has been widely used to treat patients with lumbar disc herniation (LDH) due to its safety and efficiency. However, due to the unique anatomy of the L5–S1 level, the PTED procedure is often difficult to perform in the region. ZESSYS, a targeted and quantificational foraminoplasty device, may help to overcome these anatomical limitations. In this study, we assessed the efficiency and the short-term effects of PTED with ZESSYS at the L5–S1 level. Methods Between January and August of 2018, fifty-six patients with lumbar disc herniation at the single level of L5–S1 and who underwent percutaneous transforaminal endoscopic discectomy were enrolled in this retrospective cohort study. They were segregated into the transforaminal endoscopic surgical system (TESSYS) group and the ZESSYS group. The puncture time, foraminoplasty time, decompression time, and fluoroscopy time were evaluated for operation efficiency. Clinical outcomes were assessed by the visual analog scale (VAS) score and Oswestry Disability Index (ODI) score. The MacNab criteria were used to evaluate patient subjective satisfaction at 12-month follow-up postoperatively. Results The average puncture time (5.29 ± 2.05 min), foraminoplasty time (12.82 ± 2.52 min), and fluoroscopy time (26.29 ± 5.96 s) were all significantly shorter in the ZESSYS group than in the TESSYS group (average puncture time 8.07 ± 3.13 min, p < 0.01; foraminoplasty time, 17.18 ± 2.92 min, p < 0.01; fluoroscopy time, 34.73 ± 6.86 s; p < 0.01). No significant differences were observed between the 2 groups in the decompression time (p = 0.057). The VAS score of low back pain and leg pain, as well as the ODI score, improved at all time points postoperatively compared with preoperative, in both the TESSYS group and the ZESSYS group (P < 0.05). There were no significant differences in the VAS score of low back pain, VAS score of leg pain, and ODI score between the TESSYS group and the ZESSYS group at the same time points (P > 0.05). According to the MacNab criteria, the excellent and good rate at 12-month follow-up postoperatively was 85.7% in the TESSYS group and 89.3% in the ZESSYS group (P > 0.05). Conclusion The targeted and quantificational foraminoplasty device named ZESSYS was more efficient in the puncture and foraminoplasty procedures, effectively protecting the exiting nerve and minimizing the level of radiation exposure. The device is efficient and safe for PTED in treating lumbar disc herniation at the L5–S1 level.

scholarly journals Spontaneous Resorption Of A Lumbar Disc Herniation In A Patient With Multiple Myeloma: A Rare Association

2020 ◽  
Author(s):  
Xingchen Yao ◽  
Yanzhe Wei ◽  
Lei Qi ◽  
Xinru Du
Keyword(s):  
Multiple Myeloma ◽  
Low Back Pain ◽  
Back Pain ◽  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Leg Pain ◽  
Herniated Disc ◽  
Intervertebral Disc Herniation ◽  
Low Back

Abstract Background: The phenomenon of spontaneous resorption of a herniated disc (HD) is a common occurrence. In literature, there are many studies attempting to explain the mechanism for regression, including imaging techniques and immunohistologic analyses. Nevertheless, the exact mechanism remains uncertain. In addition, the connection between HD regression and general conditions of patients is not concerned yet. Here we report a case of spontaneous resorption of a lumbar disc herniation in a patient with multiple myeloma, which had not reported before.Case presentation: An illustrative patient, a 42-year-old Chinese man, was admitted to our hospital with a disc herniation at L5-S1, experiencing 2-months history of low back pain and 1-month left leg pain. He was treated conservatively with medication and physical therapy. Then he was symptom-free after 2 months. The low back pain of the patient recurred with the herniated lumbar disc disappearing after 2 years. The disappearance demonstrated by magnetic resonance imaging (MRI). And besides, the patient was diagnosed with multiple myeloma (MM). The emergence of MM might result in the recurred backache, and the process of HD resorption might be accelerated by the high serum Vascular endothelial growth factor (VEGF) of the MM patient.Conclusions: For patients who suffering from intervertebral disc herniation together with diseases upregulating VEGF level, such as MM, surgical treatment should be limited and the conservatively treating time can be lengthened.

scholarly journals Microscopic extra-laminar sequestrectomy (MELS) for the treatment of hidden zone lumbar disc herniation: report of the surgical technique, patient selection, and clinical outcomes

BMC Surgery ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Chunxiao Wang ◽  
Yao Zhang ◽  
Xiaojie Tang ◽  
Haifei Cao ◽  
Qinyong Song ◽  
...  
Keyword(s):  
Blood Loss ◽  
Learning Curve ◽  
Clinical Outcomes ◽  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Operation Time ◽  
Operation Duration ◽  
The Mean

Abstract Background The area which located at the medial pedicle, posterior vertebral body and ventral hemilamina is defined as the hidden zone. Surgical management of hidden zone lumbar disc herniation (HZLDH) is technically challenging due to its difficult surgical exposure. The conventional interlaminar approach harbors the potential risk of post-surgical instability, while other approaches consist of complicated procedures with a steep learning curve and prolonged operation time. Objective To introduce microscopic extra-laminar sequestrectomy (MELS) technique for treatment of hidden zone lumbar disc herniation and present clinical outcomes. Methods Between Jan 2016 to Jan 2018, twenty one patients (13 males) with HZLDH were enrolled in this study. All patients underwent MELS (19 patients underwent sequestrectomy only, 2 patients underwent an additional inferior discectomy). The nerve root and fragment were visually exposed using MELS. The operation duration, blood loss, intra- and postoperative complications, and recurrences were recorded. The Visual Analog Scale (VAS), Oswestry Disability Index (ODI), and the modified MacNab criteria were used to evaluate clinical outcomes. Postoperative stability was evaluated both radiologically and clinically. Results The mean follow-up period was 20.95 ± 2.09 (18–24) months. The mean operation time was 32.43 ± 7.19 min and the mean blood loss was 25.52 ± 5.37 ml. All patients showed complete neurological symptom relief after surgery. The VAS and ODI score were significantly improved at the final follow-up compared to those before operation (7.88 ± 0.70 vs 0.10 ± 0.30, 59.24 ± 10.83 vs 11.29 ± 3.59, respectively, p < 0.05). Seventeen patients (81%) obtained an “excellent” outcome and the remaining four (19%) patients obtained a “good” outcome based the MacNab criteria. One patient suffered reherniation at the same level one year after the initial surgery and underwent a transforaminal endoscopic discectomy. No major complications and postoperative instability were observed. Conclusions Our observation suggest that MELS is safe and effective in the management of HZLDH. Due to its relative simplicity, it comprises a flat surgical learning curve and shorter operation duration, and overall results in reduced disturbance to lumbar stability.

New treatment of lumbar disc herniation involving 5-hydroxytryptamine2A receptor inhibitor: a randomized controlled trial

2005 ◽  
Vol 2 (4) ◽  
pp. 441-446 ◽  
Author(s):  
Masahiro Kanayama ◽  
Tomoyuki Hashimoto ◽  
Keiichi Shigenobu ◽  
Fumihiro Oha ◽  
Shigeru Yamane
Keyword(s):  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Leg Pain ◽  
Low Back ◽  
Content Type ◽  
Medical Interventions ◽  
Randomized Controlled ◽  
Nsaid Group ◽  
Fine Print

Object. Serotonin or 5-hydroxytryptamine (5-HT) is a chemical mediator associated with nucleus pulposus—induced radiculopathy. Inhibition of 5-HT receptors may potentially alleviate symptoms in patients with lumbar disc herniation. This prospective randomized controlled study was performed to evaluate the efficacy of the 5-HT2A receptor inhibitor in the treatment of symptomatic lumbar disc herniation. Methods. Forty patients with sciatica due to L4–5 or L5—S1 disc herniation were randomly allocated to treatment with the 5-HT2A inhibitor (sarpogrelate 300 mg/day) or nonsteroidal antiinflammatory drugs (NSAIDs; diclofenac 75 mg/day). Low-back pain, leg pain, and numbness were evaluated using a visual analog scale (VAS) before and after a 2-week course of treatment. The patients received only allocated medicine during the 2-week regimen and were thereafter allowed to choose any treatment options depending on their residual symptoms. One-year clinical outcomes were assessed based on the rates of additional medical interventions. The mean VAS score improvements in the 5-HT2A and NSAID groups were 33 and 46% for low-back pain, 32 and 32% for leg pain, and 35 and 22% for leg numbness, respectively. After the 2-week regimen, no additional medical interventions were required in 50% of 5-HT2A—treated patients and 15% of those receiving NSAIDs. Epidural or nerve root block procedures were performed in 35% of the 5-HT2A group and 45% of the NSAID group. Surgery was required in 20% of the 5-HT2A group and 30% of the NSAID group patients. Conclusions. The current study provided evidence that the efficacy of the 5-HT2A inhibitor was comparable with that of NSAID therapy for lumbar disc herniation. The 5-HT2A inhibitor has the potential to alleviate symptoms in patients with lumbar disc herniation.

scholarly journals Tubular approach to minimally invasive microdiscectomy for pediatric lumbar disc herniation

2018 ◽  
Vol 21 (5) ◽  
pp. 449-455 ◽  
Author(s):  
Julio D. Montejo ◽  
Joaquin Q. Camara-Quintana ◽  
Daniel Duran ◽  
Jeannine M. Rockefeller ◽  
Sierra B. Conine ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Pediatric Patients ◽  
Lumbar Disc ◽  
Low Back ◽  
Duration Of Symptoms ◽  
Patient Reported ◽  
The Mean

OBJECTIVELumbar disc herniation (LDH) in the pediatric population is rare and exhibits unique characteristics compared with adult LDH. There are limited data regarding the safety and efficacy of minimally invasive surgery (MIS) using tubular retractors in pediatric patients with LDH. Here, the outcomes of MIS tubular microdiscectomy for the treatment of pediatric LDH are evaluated.METHODSTwelve consecutive pediatric patients with LDH were treated with MIS tubular microdiscectomy at the authors’ institution between July 2011 and October 2015. Data were gathered from retrospective chart review and from mail or electronic questionnaires. The Macnab criteria and the Oswestry Disability Index (ODI) were used for outcome measurements.RESULTSThe mean age at surgery was 17 ± 1.6 years (range 13–19 years). Seven patients were female (58%). Prior to surgical intervention, 100% of patients underwent conservative treatment, and 50% had epidural steroid injections. Preoperative low-back and leg pain, positive straight leg raise, and myotomal leg weakness were noted in 100%, 83%, and 67% of patients, respectively. The median duration of symptoms prior to surgery was 9 months (range 1–36 months). The LDH level was L5–S1 in 75% of patients and L4–5 in 25%. The mean ± SD operative time was 90 ± 21 minutes, the estimated blood loss was ≤ 25 ml in 92% of patients (maximum 50 ml), and no intraoperative or postoperative complications were noted at 30 days. The median hospital length of stay was 1 day (range 0–3 days). The median follow-up duration was 2.2 years (range 0–5.8 years). One patient experienced reherniation at 18 months after the initial operation and required a second same-level MIS tubular microdiscectomy to achieve resolution of symptoms. Of the 11 patients seen for follow-up, 10 patients (91%) reported excellent or good satisfaction according to the Macnab criteria at the last follow-up. Only 1 patient reported a fair level of satisfaction by using the same criteria. Seven patients completed an ODI evaluation at the last follow-up. For these 7 patients, the mean ODI low-back pain score was 19.7% (SEM 2.8%).CONCLUSIONSTo the authors’ knowledge, this is the longest outcomes study and the largest series of pediatric patients with LDH who were treated with MIS microdiscectomy using tubular retractors. These data suggest that MIS tubular microdiscectomy is safe and efficacious for pediatric LDH. Larger prospective cohort studies with longer follow-up are needed to better evaluate the long-term efficacy of MIS tubular microdiscectomy versus other open and MIS techniques for the treatment of pediatric LDH.

Microscopic extra-laminar sequestrectomy (MELS) for the treatment of hidden zone lumbar disc herniation: report of the surgical technique, patient selection, and clinical outcomes

2020 ◽  
Author(s):  
Chunxiao Wang ◽  
Yao Zhang ◽  
Xiaojie Tang ◽  
Haifei Cao ◽  
Qinyong Song ◽  
...  
Keyword(s):  
Blood Loss ◽  
Learning Curve ◽  
Clinical Outcomes ◽  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Operation Time ◽  
Operation Duration ◽  
The Mean

Abstract Background Surgical management of lumbar disc herniation in the hidden zone is technically challenging due to its difficult surgical exposure. The conventional interlaminar approach harbors the potential risk of post-surgical instability, while other approaches consist of complicated procedures with a steep learning curve and prolonged operation time. Objective To introduce a safe and effective technique named microscopic extra-laminar sequestrectomy (MELS) for treatment of hidden zone lumbar disc herniation and present clinical outcomes within a two year follow-up period. Methods Between Jan 2016 to Jan 2018, twenty one patients (13 males) with hidden zone lumbar disc herniation were enrolled in this study. All patients underwent MELS (19 patients underwent sequestrectomy only, 2 patients underwent an additional inferior discectomy). The nerve root and herniated fragment were visually exposed using this extra-laminar approach. The operation duration, blood loss, intra- and postoperative complications, and recurrences were recorded. The Visual Analog Scale (VAS), Oswestry Disability Index (ODI), and the modified MacNab criteria were used to evaluate clinical outcomes. Postoperative stability was evaluated both radiologically and clinically. Results The mean follow-up period was 20.95 ± 2.09 months, ranging from 18 to 24 months. The mean operation time was 32.43 ± 7.19 min and the mean blood loss was 25.52 ± 5.37 ml. All patients showed complete neurological symptom relief after surgery. The VAS and ODI score were significantly improved at the final follow-up compared to those before operation (7.88 ± 0.70 vs 0.10 ± 0.30, 59.24 ± 10.83 vs 11.29 ± 3.59, respectively, p < 0.05). Seventeen patients (81%) obtained an “excellent” outcome and the remaining four (19%) patients obtained a “good” outcome based the MacNab criteria. One patient suffered reherniation at the same level one year after the initial surgery and underwent a transforaminal endoscopic discectomy. No major complications and postoperative instability were observed. Conclusions Our observation suggest that MELS is a safe and effective method in the management of hidden zone lumbar disc herniation. Due to its relative simplicity, it comprises a flat surgical learning curve and shorter operation duration, and overall results in reduced disturbance to lumbar stability.

scholarly journals Comparative Study between Full-Endoscopic Discectomy and Microendoscopic Discectomy for the Treatment of Lumbar Disc Herniation

Medicina ◽  
2020 ◽  
Vol 56 (12) ◽  
pp. 710
Author(s):  
Muneyoshi Fujita ◽  
Tomoaki Kitagawa ◽  
Masahiro Hirahata ◽  
Takahiro Inui ◽  
Hirotaka Kawano ◽  
...  
Keyword(s):  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Disc Height ◽  
Leg Pain ◽  
Height Loss ◽  
Common Disease ◽  
Low Back ◽  
Endoscopic Discectomy ◽  
Microendoscopic Discectomy

Background and objectives: Lumbar disc herniation (LDH) is a common disease in the meridian of life. Although surgical discectomy is commonly used to treat LDH, there are several different strategies. We compared the outcomes of uniportal full-endoscopic discectomy (FED) with those of microendoscopic discectomy (MED) in treating LDH. Materials and Methods: FED was performed using a 4.1-mm working channel endoscope, and MED was performed using a 16-mm diameter tubular retractor and endoscope. Data of patients with LDH treated with FED (n = 39) or MED (n = 27) by the single surgeon were retrospectively reviewed. Patient background information and operative data were collected. Pre- and postoperative low back and leg pain were evaluated using the numerical rating scale (NRS) score. Pre- and postoperative disc height index (DHI) values were calculated from plain radiographs, and the disc height loss was evaluated using the ratio (DHI ratio); Results: The median (interquartile range (IQR) Q25–75) operation times for FED and MED were 42 (33–61) and 43 (33–50) minutes, respectively. The median (IQR Q25–75) pre- and postoperative NRS scores for low back pain were 5 (2–7) and 1 (0–4), respectively, for FED and 6 (3–8) and 1 (0–2), respectively, for MED. The median (IQR Q25–75) pre- and postoperative NRS scores for leg pain were 7 (5–8) and 0 (0–2), respectively, for FED and 6 (5–8) and 0 (0–2), respectively, for MED. These data were not different between the FED and MED groups. The median (IQR Q25–75) DHI ratios of FED and MED were 0.94 (0.89–1.03) and 0.90 (0.79–0.95), respectively. The DHI ratio was significantly higher (p < 0.05) in the FED group than in the MED group, and there was less blood loss; Conclusions: The pain-relieving effect of FED in treating LDH was almost identical to that of MED. However, FED was superior to MED in preventing disc height loss, which is one of the indicators of postoperative disc degeneration.

scholarly journals Short-term clinical outcomes of percutaneous transforaminal endoscopic discectomy in treating adolescents under 25 years old with massive lumbar disc herniation

2020 ◽  
Author(s):  
Hai-Chao He ◽  
Yong-jin Zhang
Keyword(s):  
Clinical Outcomes ◽  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Leg Pain ◽  
Spinal Instability ◽  
Lower Limb Pain ◽  
Endoscopic Discectomy ◽  
Adolescent Patients ◽  
Percutaneous Transforaminal Endoscopic Discectomy

Abstract Background: In the last decades, endoscopic techniques to treat lumbar disc herniation (LDH) have gained popularity in clinical practice. However, few studies have described the safety and efficacy of percutaneous transforaminal endoscopic discectomy (PTED) in treating adolescent massive LDH. This study aims to evaluate the surgical outcomes of PTED in treating adolescent patients with massive LDH. Methods: Between October 2012 and December 2018, retrospective analysis of 13 adolescent patients with single segment massive LDH at the Department of Spinal Surgery of Affiliated Dongyang Hospital of Wenzhou Medical University. All patients were followed up for at least 12 months (range 12–20 months). The patients’ lower limb pain was evaluated using visual analogue scale (VAS) scores and the Oswestry Disability Index (ODI). Patient satisfaction was evaluated using the MacNab outcome scale. Clinical outcomes were measured preoperatively, at 3 days, 1 months, 3 months, 6 month and 12 months postoperatively. Results: The VAS score for leg pain was 7.08 ±1.12 preoperatively and 3.23±1.01, 3.0 ± 1.01, and 2.62 ± 0.51, and 2.32± 0.48, and 1.46± 0.52, at 3 days, 1 months, 3 months, 6 months and 12 months postoperatively respectively. The ODI scores was 51.51 ±3.08 preoperatively and 21.74±1.15, 14.81 ± 1.50, and 2.78 ± 0.64, at 3 months, 6 months and 12 months postoperatively respectively. These postoperative scores were all significantly different when compared with preoperative scores (P < 0.001). According to the modified MacNab outcome scale, excellent was obtained in 7 patients, good was obtained in 5 patients, and fair was obtained in 1 patient, and 92.31% of these patients had excellent and good outcomes at the final follow-up. There were no complications related to surgery, and no spinal instability was detected. Conclusion: The PTED is an effective and safe surgical method for the treatment of adolescent patients with massive LDH, but high-quality randomized controlled trials are still required to further verify these findings.

Percutaneous Endoscopic Lumbar Discectomy for Treating Cauda Equina Syndrome Due To Lumbar Disc Herniation

2021 ◽  
Author(s):  
Hai-Chao He ◽  
Xiao-qiang LV ◽  
Yong-Jin Zhang
Keyword(s):  
Back Pain ◽  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Cauda Equina Syndrome ◽  
Lumbar Disc ◽  
Cauda Equina ◽  
Lumbar Discectomy ◽  
Leg Pain ◽  
Endoscopic Lumbar Discectomy

Abstract Background In recent decades, endoscopic techniques to treat lumbar disc herniation (LDH) have gained popularity in clinical practice. However, there is little literature on the use of percutaneous endoscopic lumbar discectomy (PELD) to treat cauda equina syndrome (CES) due to LDH. This study aims to evaluate the feasibility and clinical efficacy of PELD for treating CES caused by disc herniation, and as well as to report some technical strategies. Methods Between October 2012 and April 2018, 15 patients with CES caused by LDH at the early and intermediate stages of Shi’s classification were selected as the subjects of study, and underwent PELD. All patients were followed up for at least two years. The patients’ back pain and leg pain were evaluated using visual analogue scale (VAS) scores and the Oswestry Disability Index (ODI). Patient satisfaction was evaluated using the MacNab outcome scale. Clinical outcomes were measured preoperatively and at 3 days, 3 months, 6 months and the last follow-up. Results The VAS score for back pain, leg pain and ODI score significantly decreased from preoperatively scores of 6.67 ± 1.05, 7.13 ± 1.19 and 62.0 ± 6.85 respectively, to postoperatively cores of 1.80 ± 0.41, 1.47 ± 0.52 and 12.93 ± 1.03 at the last follow-up postoperatively. These postoperative scores were all significantly different compared with preoperative scores (P < 0.01). According to the modified MacNab outcome scale, 86.67% of these patients had excellent and good outcomes at the final follow-up. Complications included one patient with cerebrospinal fluid leakage and one patient who developed recurrent herniation; the latter patient finally achieved satisfactory results after reoperation. Conclusion PELD could be used as an alternative surgical method for the treatment of CES due to LDH in properly selected cases and appropriate patient selection. However, the operator should pay attention to foraminoplasty to enlarge the working space.

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