scholarly journals Minimally invasive removal of lumbar intradural extramedullary lesions using the interlaminar approach

2015 ◽  
Vol 39 (2) ◽  
pp. E10 ◽  
Author(s):  
Yong-Jian Zhu ◽  
Guang-Yu Ying ◽  
Ai-Qin Chen ◽  
Lin-Lin Wang ◽  
Dan-Feng Yu ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Bone Destruction ◽  
Length Of Hospital Stay ◽  
Complete Removal ◽  
Tumor Location ◽  
Surrounding Tissue ◽  
Spinal Instability ◽  
Interlaminar Approach ◽  
Intradural Extramedullary

OBJECT Posterior midline laminectomy or hemilaminectomy has been successfully applied as the standard microsurgical technique for the treatment of spinal intradural pathologies. However, the associated risks of postoperative spinal instability increase the need for subsequent fusion surgery to prevent potential long-term spinal deformity. Continuous efforts have been made to minimize injuries to the surrounding tissue resulting from surgical manipulations. The authors report here their experiences with a novel minimally invasive surgical approach, namely the interlaminar approach, for the treatment of lumbar intraspinal tumors. METHODS A retrospective review was conducted of patients at the Second Affiliated Hospital of Zhejiang University School of Medicine who underwent minimally invasive resection of lumbar intradural-extramedullary tumors. By using an operative microscope, in addition to an endoscope when necessary, the authors were able to treat all patients with a unilateral, paramedian, bone-sparing interlaminar technique. Data including preoperative neurological status, tumor location, size, pathological diagnosis, extension of resections, intraoperative blood loss, length of hospital stay, and clinical outcomes were obtained through clinical and radiological examinations. RESULTS Eighteen patients diagnosed with lumbar intradural-extramedullary tumors were treated from October 2013 to March 2015 by this interlaminar technique. A microscope was used in 15 cases, and the remaining 3 cases were treated using a microscope as well as an endoscope. There were 14 schwannomas, 2 ependymomas, 1 epidermoid cyst, and 1 enterogenous cyst. Postoperative radiological follow-up revealed complete removal of all the lesions and no signs of bone defects in the lamina. At clinical follow-up, 14 of the 18 patients had less pain, and patients' motor/sensory functions improved or remained normal in all cases except 1. CONClUSIONS When meeting certain selection criteria, intradural-extramedullary lumbar tumors, especially schwannomas, can be completely and safely resected through a less-invasive interlaminar approach using a microscope, or a microscope in addition to an endoscope when necessary. This approach was advantageous because it caused even less bone destruction, resulting in better postoperative spinal stability, no need for facetectomy and fusion, and quicker functional recovery for the patients. Individualized surgical planning according to preoperative radiological findings is key to a successful microsurgical resection of these lesions through the interlaminar space.

scholarly journals Laminectomy versus Unilateral Hemilaminectomy for the Removal of Intraspinal Schwannoma: Experience of a Single Institution and Review of Literature

2021 ◽  
Author(s):  
Mauro Dobran ◽  
Riccardo Paracino ◽  
Davide Nasi ◽  
Denis Aiudi ◽  
Mara Capece ◽  
...  
Keyword(s):  
Postoperative Pain ◽  
Operative Time ◽  
Bed Rest ◽  
Tumor Location ◽  
Spinal Instability ◽  
Extramedullary Tumor ◽  
Postoperative Time ◽  
Intradural Extramedullary ◽  
Slow Growing

Abstract Background and Study Aims Spinal schwannomas are benign slow-growing tumors, and gross total resection is the gold standard of treatment. The conventional surgical approach is laminectomy, which provides a wide working area. Today minimally invasive surgery (MIS) is popular because it is associated with shorter hospital stay, less operative blood loss, minimized tissue traumas and relative postoperative pain, and, and spine surgery, avoidance of spinal instability. Material and Methods From January 2016 to December 2019, we operated on 40 patients with spinal intradural extramedullary tumor (schwannoma) with laminectomy or hemilaminectomy. Baseline medical data, including patients' sex and age, tumor location, days of postoperative bed rest, operative time, length of hospitalization, and 1-month visual analog scale (VAS) value were collected and analyzed. Data analysis was performed using STATA/IC 13.1 statistical package (StataCorp LP, College Station, Texas, United States). Results Hemilaminectomy was associated with faster operative time (p < 0.001), shorter postoperative time spent in bed (p < 0.001), and shorter hospitalization (p < 0.001). At 1-month follow-up, the mean VAS score was 4.6 (1.7) among the laminectomy patients and 2.5 (1.3) among the hemilaminectomy patients (p < 0.001). Postoperative complications occurred in 1 (7.7%) and 7 (25.9%) patients in the hemilaminectomy and laminectomy groups, respectively (p = 0.177). Conclusions Unilateral hemilaminectomy has significant advantages compared with laminectomy in spinal schwannoma surgery including shorter operative time, less time spent in bed, shorter hospitalization, and less postoperative pain.

scholarly journals Minimally Invasive Removal of Extra- and Intradural Spinal Tumors Using Full Endoscopic Visualization

2020 ◽  
pp. 219256822094880
Author(s):  
Joel Caballero-García ◽  
Yurledys Jhohana Linares-Benavides ◽  
Ueza Laurinelis Salazar Leitão ◽  
Carlos Aparicio-García ◽  
Misael López-Sánchez
Keyword(s):  
Minimally Invasive ◽  
Invasive Surgery ◽  
Minimal Invasive ◽  
Spinal Tumors ◽  
Spinal Instability ◽  
Tertiary Center ◽  
Computed Tomography Scans ◽  
Microsurgical Approach ◽  
Intradural Extramedullary

Study Design: Retrospective cohort study. Objective: To evaluate the clinical efficacy of minimally invasive endoscopic surgery in patients with spinal extradural and intradural-extramedullary tumors. Methods: This was a study of 15 consecutive patients with spinal extradural or intradural-extramedullary tumors up to 2 levels treated by minimal invasive surgery using a full endoscopic visualization and Caspar’s retraction system (for cervical, thoracic, and lumbar tumors) over a 4-year period between January 2015 to April 2019 at a tertiary center. Results: A gross total remove was achieved in all patients (100%), determined by postoperative contrast computed tomography scans and magnetic resonance imaging. There was no postoperative spinal instability. All patients had equal or better neurologic functions after surgery at follow-up. The average preoperative Nurick’s grade mean was 1.9 and the postoperative was 1.1. The average preoperative McCormick’s grade mean was 2.9 versus 1.3 in the postoperative period. Conclusions: Selective extradural or intradural-extramedullary tumors well localized and up to 2 levels can be safely and effectively treated by minimally invasive surgery using a full endoscopic visualization and the Caspar’s retractor. However, there is insufficient evidence to recommend this approach over the classical or other microsurgical approach described.

scholarly journals Keyhole approaches to intradural pathologies

2017 ◽  
Vol 43 (2) ◽  
pp. E5 ◽  
Author(s):  
Klaus C. Mende ◽  
Theresa Krätzig ◽  
Malte Mohme ◽  
Manfred Westphal ◽  
Sven O. Eicker
Keyword(s):  
Complete Resection ◽  
Spinal Tumors ◽  
Spinal Instability ◽  
Open Approach ◽  
Intramedullary Tumors ◽  
Interlaminar Approach ◽  
Intradural Extramedullary ◽  
The Mean ◽  
Mini Open

OBJECTIVESpinal tumors account for 2%–4% of all tumors of the central nervous system and can be intramedullary, intradural extramedullary, or extradural. In the past, wide approaches were used to obtain safe access to these tumors, as complete resection is the goal in treating most tumor entities. To reduce surgical complications due to large skin incisions and destabilizing laminectomies, minimally invasive approaches were established. In this study, the authors share their experience with mini-open approaches to intradural tumor pathologies.METHODSThe authors retrospectively reviewed cases involving patients with intramedullary and intradural extramedullary lesions treated between 2009 and 2016. They present their surgical mini-open approach to the spinal cord as well as unique characteristics, key steps, and postsurgical complications for specific tumor subgroups (meningioma, neuroma, and intramedullary tumors).RESULTSA total of 245 intradural tumors were surgically treated during the study period. Of these lesions, 151 were intradural extramedullary meningiomas (n = 79) or neuromas (n = 72). Nine (12.5%) of the neuromas were dumbbell neuromas. Ninety-four tumors were intramedullary. The mean age of the patients was 51.4 years, and 53.9% were female. The mean duration of follow-up was 46.0 months.All meningiomas and neuromas could be resected using a mini-open keyhole approach, but only 5.3% of the intramedullary lesions could be accessed using this technique. Of the 94 patients with intramedullary tumors, 76.6% required a laminotomy, 7.4% required a hemilaminectomy, and 10.6% required a 2-level laminectomy. Only 2 of the patients with intramedullary tumors needed stabilization for progressive cervical kyphosis during follow-up. None of the other patients developed spinal instability after undergoing surgery via the mini-open (keyhole/interlaminar) approach. There were significantly more surgery-associated complications in the large exposure group than in the patients treated with the mini-open approach (19.1% vs 9.6%, p < 0.01).CONCLUSIONSIntradural extramedullary and in selected cases intramedullary pathologies may safely be resected using a mini-open interlaminar approach. Avoiding laminectomy, laminotomy, and even hemilaminectomy preserves spinal stability and significantly reduces comorbidities, while still allowing for complete resection of these tumors.

Percutaneous Endoscopic Interlaminar Discectomy for Intracanalicular Disc Herniations At L5–S1 Using a Rigid Working Channel Endoscope

2006 ◽  
Vol 58 (suppl_1) ◽  
pp. ONS-59-ONS-68 ◽  
Author(s):  
Gun Choi ◽  
Sang-Ho Lee ◽  
Pradyumna Pai Raiturker ◽  
Seungcheol Lee ◽  
Yu-Sik Chae
Keyword(s):  
Minimally Invasive ◽  
Invasive Procedure ◽  
Cerebrospinal Fluid Leakage ◽  
Favorable Result ◽  
Minimally Invasive Procedure ◽  
Transforaminal Approach ◽  
Interlaminar Approach ◽  
Endoscopic Discectomy ◽  
Disc Herniations

Abstract OBJECTIVE: Percutaneous endoscopic transforaminal discectomy is often used as a minimally invasive procedure for lumbar disc herniation. However, a transforaminal approach posts limitations at the L5–S1 level owing to anatomic constraints, such as a high iliac crest or small intervertebral foramen and especially for migrated large intracanalicular disc herniations. We discuss the procedure and clinical results of percutaneous endoscopic interlaminar discectomy using a rigid working channel endoscope at the L5–S1 level and the relevant surgical anatomy. METHODS: We performed percutaneous endoscopic discectomy through the interlaminar approach in 67 patients who satisfied our inclusion criteria during the period from March 2002 to November 2002. All procedures were performed under local anesthesia. Under fluoroscopic guidance, we performed discography using indigocarmine mixed with radio-opaque dye. The 6-mm working channel endoscope was then introduced into the epidural space. Herniated disc material was removed using forceps and laser under clear endoscopic visualization. We retrospectively evaluated the 65 cases with more than 1.5 years of follow-up. The patients were evaluated using the visual analogue scale (VAS) and the Oswestry Disability Index (ODI). RESULTS: VAS for leg pain (preoperative mean, 7.89; postoperative mean, 1.58) and ODI (preoperative mean, 57.43; postoperative mean, 11.52) showed statistically significant (P = 0.00) improvement in their values at the last follow-up examination compared with preoperative scores. Of the study group, 90.8% individuals showed favorable result. The mean hospital stay was 12 hours. The average time to return to work was 6.79 weeks. Complications included two cases of dural injury with cerebrospinal fluid leakage, nine cases of dysesthesia that were transient, and one case of recurrence. Two patients required conversion to open procedure at the initial operation. There was no evidence of infection in any patients. CONCLUSION: Percutaneous endoscopic interlaminar discectomy is a safe, effective, and minimally invasive procedure for the treatment of intracanalicular disc herniations at the L5–S1 level in properly selected cases, especially when the transforaminal approach is not possible because of anatomic constraints.

scholarly journals A 5-Year Experience of a Minimally Invasive Technique for Correction of Pectus Excavatum in Croatia

2006 ◽  
Vol 49 (2) ◽  
pp. 105-107 ◽  
Author(s):  
Mirko Žganjer ◽  
Božidar Župančić ◽  
Ljiljana Popović
Keyword(s):  
Minimally Invasive ◽  
Pectus Excavatum ◽  
Average Length ◽  
Length Of Hospital Stay ◽  
Minimally Invasive Technique ◽  
Invasive Technique ◽  
Minimally Invasive Operation ◽  
Steel Bar ◽  
Normal Chest

The aim of this study was to assess the results of 5-year experience with minimally invasive operation without medial incision and resection cartilages for correction of pectum excavatum. From 2000 we made in our Hospital minimally invasive technique for the correction of pectus excavatum. 75 patients were treated by minimally invasive technique. A convex steel bar is inserted under the sternumtrough small bilateral Incisions. The steel bar is inserted with the convexity facing posteriorly, and when it is in position, the bar is turned over. After 2 years the bar is removed when permanent remolding has occurred. Initial excelent results were maintained in 54 patients (normal chest), good results in 16 (mild residual pectus) and poor in 5 (severe recurrence requiring further treatment). The mean follow-up since surgery were 3 months to 3 years. Average blood loss was 25 ml. Average length of hospital stay was 8 days. Patients returned to full activity after 2 month. Complications were pneumothorax in 12 patients, pneumonia in 6 patients and displacement of the steel barr requiring revision in 2 patients. Poor results occurred because steel bar was too soft in 3 patients, and soft sternum in 2 patients with Marfan’s syndrome. The minimally invesive technique is effective without cartilage incision and resection or sternal osteotomy.

scholarly journals Minimally Invasive Non-Endoscopic Correction for Sagittal Craniosynostosis in Children Aged Below 6 Months

2021 ◽  
Vol 9 (D) ◽  
pp. 294-299
Author(s):  
Ayman Farghal ◽  
Khaled Bassim ◽  
Amr Mostafa Elkatatny
Keyword(s):  
Minimally Invasive ◽  
Length Of Hospital Stay ◽  
Sagittal Craniosynostosis ◽  
Significant Difference ◽  
Duration Of Surgery ◽  
Long Term Follow Up ◽  
Good Cosmetic ◽  
Endoscopic Correction ◽  
A Prospective Study

AIM: Object of this study is to determine effectiveness of this procedure used in this study which is minimally invasive non endoscopic correction for sagittal craniosynostosis in children below 6 months. METHODS: A prospective study was done in Neurosurgery children unit, Abu Elreash Japanese children hospital, Cairo university, Egypt, for patients with non syndromatic sagittal craniosynostosis. The variables analyzed; OFD, BPD, CI pre. & postoperative, age of patients at time of surgery, sex, duration of surgery and length of hospital stay. RESULTS: Our results shows statistically significant difference between pre-operative with post-operative after 2 days, post-operative follow-up, and follow-up after 1 year for OFD, BPD and CI. CONCLUSIONS: Internal helmet technique used in correction of sagittal synostosis in children below 6 months old giving good cosmetic results with the following advantages, (1) short surgery time, (2) small wound, (3) no much blood loss, (4) immediate good cosmetic result, (5) no need to use external devices which reduces the cost, family load, and child suffering, and (6) no need for long-term follow-up.

scholarly journals Orthotic Bracing or Minimally Invasive Surgery? A Summary of 767 Pectus Carinatum Cases for 9 Years

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Ziyin Shang ◽  
Chun Hong ◽  
Xianlun Duan ◽  
Xiangyong Li ◽  
Yuan Si
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Invasive Surgery ◽  
Pediatric Patients ◽  
Average Length ◽  
Length Of Hospital Stay ◽  
Operation Time ◽  
Pectus Carinatum ◽  
Treatment Methods

Orthotic bracing and minimally invasive surgery are currently the treatment methods for pectus carinatum. We present our experience with the advantages, method selection criteria, and precautions for both treatment methods. A total of 767 pediatric patients (596 boys and 171 girls) with pectus carinatum were retrospectively analyzed. All of them received orthotic bracing, and 108 pediatric patients received minimally invasive surgery, achieving good outcomes. Among the 767 pediatric patients, 644 obtained satisfactory chest appearance through orthotic bracing, with a success rate of 84.0%. Younger pediatric patients had better orthotic outcomes. Among the 123 failure cases, 108 pediatric patients underwent minimally invasive surgery as the treatment. Seventy-six pediatric patients with simple chondrogladiolar prominence underwent a minimally invasive sternal depression procedure, whereas 32 pediatric patients with complex chondromanubrial prominence underwent surgery. All 108 pediatric patients successfully completed the surgery. The operation time was 112.8 ± 23.5  min, and the average length of hospital stay after the surgery was 7 days. A follow-up was conducted for at least 3 months and up to 3 years. The orthotic effect was satisfactory. For younger pediatric patients with pectus carinatum, noninvasive orthotic bracing treatment should be considered first. For older pediatric patients, the failure rate of the bracing was higher, and the outcomes were often unsatisfactory. Especially for patients over 15 years old, minimally invasive sternal depression may be the preferred treatment for pectus carinatum.

Minimally invasive removal of thoracic and lumbar spinal tumors using a nonexpandable tubular retractor

2013 ◽  
Vol 19 (6) ◽  
pp. 708-715 ◽  
Author(s):  
Andre Nzokou ◽  
Alexander G. Weil ◽  
Daniel Shedid
Keyword(s):  
Minimally Invasive ◽  
Spinal Tumors ◽  
Subtotal Resection ◽  
Minimally Invasive Approach ◽  
Tubular Retractor ◽  
Invasive Approach ◽  
Duration Of Surgery ◽  
Intradural Extramedullary ◽  
Mini Open

Object Resection of spinal tumors traditionally requires bilateral subperiosteal muscle stripping, extensive laminectomy, and, in cases of foraminal extension, partial or radical facetectomy. Fusion is often warranted in cases of facetectomy to prevent deformity, pain, and neurological deterioration. Recent reports have demonstrated safety and efficacy of mini-open removal of these tumors using expandable tubular retractors. The authors report their experience with the minimally invasive removal of extradural foraminal and intradural-extramedullary tumors using the nonexpandable tubular retractor. Methods A retrospective chart review of consecutive patients who underwent minimally invasive resection of spinal tumors at Notre Dame Hospital was performed. Results Between December 2005 and March 2012, 13 patients underwent minimally invasive removal of spinal tumors at Notre Dame Hospital, Montreal. There were 6 men and 7 women with a mean age of 55 years (range 20–80 years). There were 2 lumbar and 2 thoracic intradural-extramedullary tumors and 7 thoracic and 2 lumbar extradural foraminal tumors. Gross-total resection was achieved in 12 patients. Subtotal resection (90%) was attained in 1 patient because the tumor capsule was adherent to the diaphragm. The average duration of surgery was 189 minutes (range 75–540 minutes), and the average blood loss was 219 ml (range 25–500 ml). There were no major procedure-related complications. Pathological analysis revealed benign schwannoma in 8 patients and meningioma, metastasis, plasmacytoma, osteoid osteoma, and hemangiopericytoma in 1 patient each. The average equivalent dose of postoperative narcotics after surgery was 66.3 mg of morphine. The average length of hospitalization was 66 hours (range 24–144 hours). All working patients returned to normal activities within 4 weeks. The average MRI and clinical follow-up were 13 and 21 months, respectively (range 2–68 months). At last follow-up, 92% of patients had improvement or resolution of pain with a visual analog scale score that improved from 7.8 to 1.2. All patients with neurological impairment improved. The American Spinal Injury Association grade improved in all but 1 patient. Conclusions Intradural-extramedullary and extradural tumors can be completely and safely resected through a minimally invasive approach using the nonexpandable tubular retractor. This approach may be associated with even less tissue destruction than mini-open techniques, translating into a quicker functional recovery. In cases of foraminal tumors, by eliminating the need for facetectomy, this minimally invasive approach may decrease the incidence of postoperative deformity and eliminate the need for adjunctive fusion surgery.

scholarly journals An evaluation of trans-anal rectoscopic-assisted minimally invasive surgery (ARAMIS): a new platform for transanal surgery

2020 ◽  
Vol 35 (9) ◽  
pp. 1681-1687 ◽  
Author(s):  
Lino Polese ◽  
Roberto Rizzato ◽  
Andrea Porzionato ◽  
Gianfranco Da Dalt ◽  
Alice Bressan ◽  
...  
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Invasive Surgery ◽  
Anal Verge ◽  
Complete Removal ◽  
Transanal Surgery ◽  
Study Results ◽  
Human Cadavers ◽  
Sils Port

Abstract Purpose The study aimed to evaluate the feasibility and safety of a new trans-anal rectoscopic-assisted minimally invasive surgery (ARAMIS) platform to treat rectal lesions. Methods ARAMIS was first compared with two transanal minimally invasive surgery platforms (SILS Port and GelPOINT Path) on human cadavers. Surgeons with different experience performed running sutures at different distances, at four quadrants, using the three platforms and gave a score to visibility, safety, and maneuverability. ARAMIS was then utilized on patients affected with rectal neoplasia who met the inclusion criteria. Patients and tumor characteristic and results were prospectively collected. The follow-up examinations included proctoscopy at 3, 6, and 12 months. Results According to surgeons’ scores, ARAMIS improves visibility and safety with respect to other platforms for distances beyond 10 cm. The procedure, which lasted an average of 59 min, was successfully carried out in 14 patients. No intraoperative or postoperative complications were reported. The mean tumor size was 3 cm; they were located a mean of 11 cm from the anal verge. Complete removal of the lesion was possible in 13/14 patients. There was one case of adenoma recurrence at follow-up. Conclusion Study results showed that ARAMIS, which is equipped with an adjustable rectoscope, can be considered a safe, effective platform for transanal surgery. The rectoscope protects the rectum during the procedure, a particularly important consideration when proximal rectal lesions are being treated. Further clinical studies are warranted to confirm these encouraging results.

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