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Hsu YC, Liu YF, Chang CJ, Hsiao YM, Huang YH, Liu KC, Chen CM, Kim HS, Lin CL. How to Prevent Nerve Root Injury in Uniportal Full Endoscopic Lumbar Fusion Surgery? Insights From a Cadaveric Anatomic Study With Simulation Surgery. Spine (Phila Pa 1976) 2024; 49:1301-1310. [PMID: 38872241 DOI: 10.1097/brs.0000000000005066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 05/25/2024] [Indexed: 06/15/2024]
Abstract
STUDY DESIGN The study included 2 fresh-frozen cadavers. OBJECTIVE To elucidate the positional relationship between surgical instruments and nerve roots during full endoscopic facet-sparing (FE fs-TLIF) and full endoscopic facet-resecting (FE fr-TLIF) transforaminal lumbar interbody fusion and propose safe instrumentation insertion procedures and recommend cage glider designs aimed at protecting nerve roots. BACKGROUND Endoscopic surgical techniques are increasingly used for minimally invasive lumbar fusion surgery, with FE fr-TLIF and FE fs-TLIF being common approaches. However, the risk of nerve root injury remains a significant concern during these procedures. PATIENTS AND METHODS Eight experienced endoscopic spine surgeons performed uniportal FE fr-TLIF and FE fs-TLIF on cadaveric lumbar spines, totaling 16 surgeries. Postoperation, soft tissues were removed to assess the positional relationship between the cage entry point and nerve roots. Distances between the cage entry point, traversing nerve root, and exiting nerve root were measured. Safe instrumentation design and insertion procedures were determined. RESULTS In FE fr-TLIF, the mean distance between the cage entry point and traversing nerve root was significantly shorter compared with FE fs-TLIF (3.30 ± 1.35 vs . 8.58 ± 2.47 mm, respectively; P < 0.0001). Conversely, the mean distance between the cage entry point and the exiting nerve root was significantly shorter in FE fs-TLIF compared with FE fr-TLIF (3.73 ± 1.97 vs . 6.90 ± 1.36 mm, respectively; P < 0.0001). For FE fr-TLIF, prioritizing the protection of the traversing root using a 2-bevel tip cage glider was crucial. In contrast, for FE fs-TLIF, a single-bevel tip cage glider placed in the caudal location was recommended. CONCLUSION This study elucidates the anatomic relationship between cage entry points and nerve roots in uniportal endoscopic lumbar fusion surgery. Protection strategies should prioritize the traversing root in FE fr-TLIF and the exiting root in FE fs-TLIF, with corresponding variations in surgical techniques. LEVEL OF EVIDENCE Level V.
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Affiliation(s)
- Yu-Chia Hsu
- Department of Orthopedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yuan-Fu Liu
- Department of Orthopedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chao-Jui Chang
- Department of Orthopedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Meng Hsiao
- Department of Orthopedics, Tainan Municipal An-Nan Hospital, China Medical University, Tainan
| | - Yi-Hung Huang
- Department of Orthopedics, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi City, Taiwan
| | - Keng-Chang Liu
- Department of Orthopedic Surgery, Buddhist Dalin Tzu Chi General Hospital, Chiayi, Taiwan
| | - Chien-Min Chen
- Division of Neurosurgery, Department of Surgery, Changhua Christian Hospital, Changhua, Taiwan
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan
| | - Hyeun-Sung Kim
- Department of Spine Surgery, Nanoori Gangnam Hospital, Seoul, Korea
| | - Cheng-Li Lin
- Department of Orthopedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Moscatelli MA, Vargas AR, de Lima MV, Komp M, Silva RB, de Carvalho MOP, Dos Santos JR, Pokorny G, Ruetten S. New ipsilateral full endoscopic interlaminar approach for L5-S1 foraminal and extraforaminal decompression: technique description and initial case series. Neurosurg Rev 2024; 47:490. [PMID: 39190169 DOI: 10.1007/s10143-024-02720-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 06/17/2024] [Accepted: 08/18/2024] [Indexed: 08/28/2024]
Abstract
BACKGROUND The L5-S1 interlaminar access described in 2006 by Ruetten et al. represented a paradigm shift and a new perspective on endoscopic spinal approaches. Since then, the spinal community has shown that both the traditional ipsilateral and novel contralateral interlaminar approaches to the L5-S1 foramen are good alternatives to transforaminal access. This study aimed to provide a technical description and brief case series analysis of a new endoscopic foraminal and extraforaminal approach for pathologies at the lumbar L5-S1 level using a new ipsilateral interlaminar approach. METHODS Thirty patients with degenerative stenotic conditions at the L5-S1 disc level underwent the modified interlaminar approach. The surgical time, blood loss, occurrence of complications, and clinical outcomes were recorded. The data were compiled in Excel and analyzed using R software version 4.2. All continuous variables are presented as the mean, median, minimum, and maximal ranges. For categorical variables, data are described as counts and percentages. RESULTS Thirty patients were included in the study. The cohort showed significant improvements in all quality-of-life scores (ODI, visual analog scale of back pain, and visual analog scale of leg pain). Five cases of postoperative numbness and three cases of postoperative dysesthesia have been reported. No case of durotomy or leg weakness has been reported. CONCLUSIONS The fundamental change proposed by this procedure, the new ipsilateral approach, presents potential advantages to surgeons by overcoming anatomical challenges at the L5-S1 level and by providing surgeon-friendly visualization and access. This approach allows for extensive foraminal and extraforaminal decompression, including the removal of hernias and osteophytosis, without causing neural retraction of the L5-S1 roots while maintaining the stability of the operated level.
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Affiliation(s)
- Marco Aurélio Moscatelli
- Department of Neurosurgery, NeuroLife Clinic Natal/Hospital Casa de Saúde São Lucas, Natal, Brazil.
- Avenida Governador Silvio Pedroza 246, apto 1102, bairro areia preta, Natal, CEP 59014100, Rio Grande do Norte, Brazil.
| | - Antonio Roth Vargas
- Department of Neurosurgery, Hospital Centro Médico Campinas, Campinas, Brazil
| | - Marcos Vaz de Lima
- Department of Orthopaedics and Traumatology, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
| | - Martin Komp
- Center for Spine Surgery and Pain Therapy, Center for Orthopaedics and Traumatology of the St. Elisabeth Group, Marien Hospital Herne, Catholic Hospital Rhein-Ruhr, St. Anna Hospital Herne, University Hospital/Marien Hospital Witten, Herne, Germany
| | | | | | | | | | - Sebastian Ruetten
- Center for Spine Surgery and Pain Therapy, Center for Orthopaedics and Traumatology of the St. Elisabeth Group, Marien Hospital Herne, Catholic Hospital Rhein-Ruhr, St. Anna Hospital Herne, University Hospital/Marien Hospital Witten, Herne, Germany
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Pan H, Li H, Liu T, Xiao C, Li S. Finite element analysis of precise puncture vertebral augmentation in the treatment of different types of osteoporotic vertebral compression fractures. BMC Musculoskelet Disord 2024; 25:599. [PMID: 39080550 PMCID: PMC11287837 DOI: 10.1186/s12891-024-07735-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Accepted: 07/25/2024] [Indexed: 08/03/2024] Open
Abstract
BACKGROUND Osteoporosis vertebral compression fracture (OVCF) secondary to osteoporosis is a common health problem in the elderly population. Vertebral augmentation (VA) has been widely used as a minimally invasive surgical method. The transpedicle approach is commonly used for VA puncture, but sometimes, it is limited by the anatomy of the vertebral body and can not achieve good surgical results. Therefore, we propose the treatment of OVCF with precise puncture vertebral augmentation (PPVA). This study used finite element analysis to explore the biomechanical properties of PPVA in the treatment of osteoporotic vertebral compression fractures (OVCFs) with wedge, biconcave, and collapse deformities. METHOD Three-dimensional finite element models of the fractured vertebral body and adjacent superior and inferior vertebral bodies were established using Computed Tomography (CT) data from patients with OVCF, both before and after surgery. Evaluate the stress changes of the wedged deformed vertebral body, biconcave deformed vertebral body, collapsed deformed vertebral body, and adjacent vertebral bodies before and after PPVA. RESULT In vertebral bodies with wedge deformity and collapsed deformity, PPVA can effectively reduce the stress on the vertebral body but increases the stress on the vertebral body with biconcave deformity. PPVA significantly decreases the stress on the adjacent vertebral bodies of the wedge deformed vertebral body, and decreases the stress on the adjacent superior vertebral body of biconcave deformity and collapsed deformed vertebral bodies, but increases the stress on the adjacent inferior vertebral bodies. PPVA improves the stress distribution of the vertebral body and prevents high-stress areas from being concentrated on one side of the vertebral body. CONCLUSION PPVA has shown positive surgical outcomes in treating wedge deformed and collapsed deformed vertebral bodies. However, its effectiveness in treating biconcave vertebral body is limited. Furthermore, PPVA has demonstrated favorable results in addressing adjacent superior vertebral body in three types of fractures.
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Affiliation(s)
- Hongyu Pan
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Hongtao Li
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Tianzhu Liu
- Neurological Disease Center, Zigong Fourth People's Hospital, Zigong, Sichuan, China
| | - Changming Xiao
- Department of Spinal Surgery, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Sen Li
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China.
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Yu P, Li Y, Zhao Q, Chen X, Wu L, Jiang S, Rao L, Rao Y. Three-dimensional analysis of puncture needle path through safety triangle approach PLD and design of puncture positioning guide plate. JOURNAL OF X-RAY SCIENCE AND TECHNOLOGY 2024; 32:825-837. [PMID: 38517837 DOI: 10.3233/xst-230267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
OBJECTIVE In this study, the three-dimensional relationship between the optimal puncture needle path and the lumbar spinous process was discussed using digital technology. Additionally, the positioning guide plate was designed and 3D printed in order to simulate the surgical puncture of specimens. This plate served as an important reference for the preoperative simulation and clinical application of percutaneous laser decompression (PLD). METHOD The CT data were imported into the Mimics program, the 3D model was rebuilt, the ideal puncture line N and the associated central axis M were developed, and the required data were measured. All of these steps were completed. A total of five adult specimens were chosen for CT scanning; the data were imported into the Mimics program; positioning guide plates were generated and 3D printed; a simulated surgical puncture of the specimens was carried out; an X-ray inspection was carried out; and an analysis of the puncture accuracy was carried out. RESULTS (1) The angle between line N and line M was 42°~55°, and the angles between the line M and 3D plane were 1°~2°, 5°~12°, and 78°~84°, respectively; (2) As the level of the lumbar intervertebral disc decreases, the distance from point to line and point to surface changes regularly; (3) The positioning guide was designed with the end of the lumbar spinous process and the posterior superior iliac spine on both sides as supporting points. (4) Five specimens were punctured 40 times by using the guide to simulate surgical puncture, and the success rate was 97.5%. CONCLUSION By analyzing the three-dimensional relationship between the optimal puncture needle path and the lumbar spinous process, the guide plate was designed to simulate surgical puncture, and the individualized safety positioning of percutaneous puncture was obtained.
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Affiliation(s)
- Penghui Yu
- School of Basic Medical Science, Hunan University of Medicine, Huaihua, Hunan, China
- Huaihua Key Laboratory of Digital Anatomy and 3D Printing for Clinical Translational Research, Huaihua, Hunan, China
| | - Yanbing Li
- School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, China
| | - Qidong Zhao
- Imaging Department, The First Affiliated Hospital of Hunan University of Medicine, Huaihua, Hunan, China
| | - Xia Chen
- School of Basic Medical Science, Hunan University of Medicine, Huaihua, Hunan, China
| | - Liqin Wu
- International Education School, Hunan University of Medicine, Huaihua, Hunan, China
| | - Shuai Jiang
- School of Basic Medical Science, Hunan University of Medicine, Huaihua, Hunan, China
- Huaihua Key Laboratory of Digital Anatomy and 3D Printing for Clinical Translational Research, Huaihua, Hunan, China
| | - Libing Rao
- School of Basic Medical Science, Hunan University of Medicine, Huaihua, Hunan, China
- Huaihua Key Laboratory of Digital Anatomy and 3D Printing for Clinical Translational Research, Huaihua, Hunan, China
| | - Yihua Rao
- Huaihua Key Laboratory of Digital Anatomy and 3D Printing for Clinical Translational Research, Huaihua, Hunan, China
- Neurosurgery Department, Hunan University of Medicine General Hospital, Huaihua, Hunan, China
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Doshi TL, Engle AM, Przybysz AJ, Nelson AM. Pro-Con Debate: Superior Versus Inferior Triangle Needle Placement in Transforaminal Epidural Injections. Anesth Analg 2023; 137:1139-1146. [PMID: 37973127 DOI: 10.1213/ane.0000000000006444] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Although transforaminal epidural injections have long been used for radicular pain, there is no universal standard injection approach to the neural foramen. The intervertebral foramen and its surrounding structures comprise an anatomically sensitive area that includes bone and joint structures, the intervertebral disk, blood vessels (in particular, the radicular arteries), the epidural sheath, and the spinal nerve root. Given the relatively high risk of inadvertent injury or injection to these nearby structures, image guidance for transforaminal epidural steroid injections (TFESIs) is standard of care. However, there is a lack of consensus regarding the optimal approach to the neural foramen: from the traditional superior ("safe") triangle or from the inferior (Kambin's) triangle. In this Pro-Con commentary article, we discuss the relative advantages and disadvantages of each approach for TFESIs.
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Affiliation(s)
- Tina L Doshi
- From the Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Alyson M Engle
- Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Aaron J Przybysz
- Department of Anesthesiology, University of California Irvine, Irvine, California
| | - Ariana M Nelson
- Department of Anesthesiology, University of California Irvine, Irvine, California
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Dannebrock FA, Zardo EDA, Ziegler MS, Vialle E, Soder RB, Schwanke CHA. Lumbar safety triangle: comparative study of coronal and coronal oblique planes in 3.0-T magnetic resonance imaging. Radiol Bras 2023; 56:327-335. [PMID: 38504808 PMCID: PMC10948153 DOI: 10.1590/0100-3984.2023.0022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 07/31/2023] [Accepted: 09/26/2023] [Indexed: 03/21/2024] Open
Abstract
Objective To compare the measurements of the lumbar safety triangle (Kambin's triangle) and the invasion of the dorsal root ganglion in the triangle in coronal and coronal oblique planes. Materials and Methods A cross-sectional study, in which 210 3.0-T magnetic resonance images of L2-L5 were analyzed in coronal and coronal oblique planes. Exams with lumbar spine anomalies were excluded. Demographic (sex and age) and radiological variables were recorded by a single evaluator. Results Most sample was female (57.1%), mean age 45.5 ± 13.3 (18-98 years). The measurements average, as well as the areas, gradually increased from L2 to L5. The dorsal root ganglion invaded the triangle in all images. The safety triangle average area was smaller in the coronal oblique plane than in the coronal plane. Of the seven dimensions of safety triangle obtained for each level of the lumbar spine, six were significantly smaller in the coronal oblique plane than in the coronal plane. The only dimension that showed no difference was the smallest ganglion dimension. Conclusion The dimensions and areas investigated were smaller in coronal oblique plane, especially the area (difference > 1 mm). The analysis of the triangular zone in this plane becomes important in the preoperative assessment of minimally invasive procedures.
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Affiliation(s)
| | - Erasmo de Abreu Zardo
- Pontifícia Universidade Católica do Rio Grande do Sul
(PUCRS), Porto Alegre, RS, Brazil
- Instituto Gaúcho de Cirurgia da Coluna Vertebral, Porto
Alegre, RS, Brazil
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Chen F, Su C, Yang G, Sun J, Cui X. Is Kambin's Triangle Safe or Not for Percutaneous Endoscopic Transforaminal Oblique Fixation from the Posterior Corner in the Lumbar Spine: A Neuroimaging Anatomic Assessment. World Neurosurg 2023; 172:e77-e85. [PMID: 36521761 DOI: 10.1016/j.wneu.2022.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Nerve root injury and dural tears are important complications in endoscopic spine techniques. Whether Kambin's triangle is safe or not is unknown for percutaneous endoscopic transforaminal oblique fixation from the posterior corner (PETOFPC) in lumbar spine. This study aimed to verify neural safety of PETOFPC and to define and evaluate the ideal operating target and actual safe working area in Kambin's triangle for PETOFPC. METHODS Lumbar magnetic resonance imaging was performed in 60 outpatients. The distances from the working targets to exiting nerve roots and dural sac/traversing nerve roots in the coronal and sagittal planes (c1-c6, s1-s6) and the distances from the exiting roots to the dural sac/traversing nerve roots in the upper and lower endplate planes (d1 and d2) were measured and statistically analyzed. RESULTS All coronal planes (c1-c6) first increased and then decreased; they gradually increased from L1-2, maximized in L4-5, and decreased slightly in L5-S1. In L1-2 through L5-S1, d1 and d2 gradually increased (F = 249.7, P < 0.0001; F = 511.7, P < 0.0001), d2 > d1 (P < 0.05). Values of d1 and d2 were smallest in L1-2 (6.71 ± 2.10 mm and 11.89 ± 2.55 mm) and largest in L5-S1 (13.37 ± 4.09 mm and 22.05 ± 3.96 mm). With the outward shift of the targets in the sagittal plane, both s1, s3, s5 and s2, s4, s6 gradually decreased (s1 > s3 > s5, s2 > s4 > s6). CONCLUSIONS We calculated the ideal operating target and actual safe area and further proved that Kambin's triangle is safe enough for PETOFPC. PETOFPC is a promising technology and may have great clinical significance.
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Affiliation(s)
- Feifei Chen
- Department of Spine Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan City, China
| | - Cheng Su
- Department of Spine Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan City, China
| | - Guihe Yang
- Department of Spine Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, China
| | - Jianmin Sun
- Department of Spine Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan City, China
| | - Xingang Cui
- Department of Spine Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan City, China; Department of Spine Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, China.
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Neurological Safety of Endoscopic Transforaminal Lumbar Interbody Fusion: A Magnetic Resonance Neurography Study. Spine (Phila Pa 1976) 2023; 48:344-349. [PMID: 36191017 DOI: 10.1097/brs.0000000000004496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 09/17/2022] [Indexed: 02/01/2023]
Abstract
OBJECTIVE A magnetic resonance neurography (MRN) study was conducted to assess the neurological safety of endoscopic transforaminal lumbar intervertebral fusion (endo-TLIF). MATERIALS AND METHODS A total of 56 healthy volunteers (29 men, 27 women; average age, 44 yr; age range, 21-60 yr) were included in the study. Coronal MRN images were collected from L2/L3 to L5/S1. The working triangle, modified working zone, and safest working zone areas, as well as the vertical and horizontal safe operation diameters, were measured. Linear regression analyses were conducted to explore the correlations between general characteristics (sex, age, height, body mass index) and the measured radiographic indicators. RESULTS MRN can effectively evaluate the operation zone of endo-TLIF. The safest working zone, modified working zone, and working triangle areas were largest at L4/L5 (92.4±23.4, 136±35.6, and 197±41.7 mm 2 , respectively) and smallest at L2/L3 (45.5±12.9, 68.1±19.5, and 92.6±24.4 mm 2 , respectively). The vertical safe operation diameter was large at L4/L5 and L2/L3 (5.34±0.8 and 5.42±0.9 mm, respectively) and smallest at L5/S1 (2.94±0.9 mm). The horizontal safe operation diameter was large at L4/L5 (7.28±1.2 mm) and smaller at L5/S1 and L2/L3 (4.28±1.0 and 4.77±0.8 mm, respectively). CONCLUSIONS L4/L5 has the lowest risk of nerve injury, and may be the safest level for beginners initiating endo-TLIF in their practice. We recommend that coronal MRN is routinely performed before endo-TLIF to minimize the risk of neurological injury.
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Tabarestani TQ, Sykes DAW, Maquoit G, Wang TY, Ayoub CM, Shaffrey CI, Wiggins WF, Abd-El-Barr MM. Novel Merging of CT and MRI to Allow for Safe Navigation into Kambin's Triangle for Percutaneous Lumbar Interbody Fusion-Initial Case Series Investigating Safety and Efficacy. Oper Neurosurg (Hagerstown) 2023; 24:331-340. [PMID: 36701664 DOI: 10.1227/ons.0000000000000531] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 09/18/2022] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND For percutaneous lumbar fusion (percLIF), magnetic resonance imaging and computed tomography are critical to defining surgical corridors. Currently, these scans are performed separately, and surgeons then use fluoroscopy or neuromonitoring to guide instruments through Kambin's triangle. However, anatomic variations and intraoperative positional changes are possible, meaning that safely accessing Kambin's triangle remains a challenge because nerveroot visualization without endoscopes has not been thoroughly described. OBJECTIVE To overcome the known challenges of percLIF and reduce the likelihood of iatrogenic injuries by showing real-time locations of neural and bony anatomy. METHODS The authors demonstrate an intraoperative navigational platform that applies nerve root segmentation and image fusion to assist with percLIF. Five patients from a single institution were included. RESULTS Of the 5 patients, the mean age was 71 ± 8 years and 3 patients (60%) were female. One patient had general anesthesia while the remaining 4 patients underwent awake surgery with spinal anesthesia. The mean area for the L4-L5 Kambin's triangle was 76.1 ± 14.5 mm 2 . A case example is shown where the side of approach was based on the fact that Kambin's triangle was larger on one side compared with the other. The mean operative time was 170 ± 17 minutes, the mean blood loss was 32 ± 16 mL, and the mean hospital length of stay was 19.6 ± 8.3 hours. No patients developed postoperative complications. CONCLUSION This case series demonstrates the successful and safe application of nerve segmentation using magnetic resonance imaging/computed tomography fusion to perform percLIF and provide positive patient outcomes.
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Affiliation(s)
- Troy Q Tabarestani
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, USA
| | - David A W Sykes
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, USA
| | - Gisselle Maquoit
- Department of Anesthesiology, Duke University Hospital, Durham, North Carolina, USA
| | - Timothy Y Wang
- Department of Neurosurgery, Duke University Hospital, Durham, North Carolina, USA
| | - Chakib M Ayoub
- Department of Anesthesiology, Duke University Hospital, Durham, North Carolina, USA
| | | | - Walter F Wiggins
- Department of Radiology, Duke University Hospital, Durham, North Carolina, USA
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Extraforaminal Full-Endoscopic Approach for the Treatment of Lateral Compressive Diseases of the Lumbar Spine. J Pers Med 2023; 13:jpm13030453. [PMID: 36983638 PMCID: PMC10058867 DOI: 10.3390/jpm13030453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/10/2023] [Accepted: 02/17/2023] [Indexed: 03/06/2023] Open
Abstract
Background: The authors conducted a 2-year retrospective follow-up to investigate the efficiency of an extraforaminal full-endoscopic approach with foraminoplasty used to treat lateral compressive diseases of the lumbar spine in 247 patients. Methods: The visual analogue scale (VAS), Oswestry disability index (ODI), and MacNab scale were used to analyze the results collected during the preoperative and postoperative periods. Results: The most common diagnosis was disk herniation with lateral recess stenosis, and the most common surgical level among patients was between L4 and L5 on the left side. Pain decreased over time, as determined during sessions held to evaluate pain in the lumbar, gluteal, led, and foot regions. The ODI demonstrated significant enhancement over the evaluation period and the MacNab scale classified the surgery as good or excellent. The most common complication was dysesthesia. Conclusions: An extraforaminal full-endoscopic approach with foraminoplasty can be recommended in cases of lateral herniation or stenosis for patients with symptoms of radiculopathy, and for those who have not responded to conventional rehabilitation treatment or chronic pain management. Few complications arose as a result of this approach, and most of them were treated clinically.
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Waguia Kouam R, Tabarestani TQ, Sykes DAW, Gupta N, Futch BG, Kakmou E, Goodwin CR, Foster NA, Than KD, Wiggins WF, Abd-El-Barr MM. How dimensions can guide surgical planning and training: a systematic review of Kambin's triangle. Neurosurg Focus 2023; 54:E6. [PMID: 36587400 DOI: 10.3171/2022.10.focus22606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/17/2022] [Indexed: 01/02/2023]
Abstract
OBJECTIVE The authors sought to analyze the current literature to determine dimensional trends across the lumbar levels of Kambin's triangle, clarify the role of imaging techniques for preoperative planning, and understand the effect of inclusion of the superior articular process (SAP). This compiled knowledge of the triangle is needed to perform successful procedures, reduce nerve root injuries, and help guide surgeons in training. METHODS The authors performed a search of multiple databases using combinations of keywords: Kambin's triangle, size, measurement, safe triangle, and bony triangle. Articles were included if their main findings included measurement of Kambin's triangle. The PubMed, Scopus, Ovid, Cochrane, Embase, and Medline databases were systematically searched for English-language articles with no time frame restrictions through July 2022. RESULTS Eight studies comprising 132 patients or cadavers were included in the study. The mean ± SD age was 66.69 ± 9.6 years, and 53% of patients were male. Overall, the size of Kambin's triangle increased in area moving down vertebral levels, with L5-S1 being the largest (133.59 ± 4.36 mm2). This trend followed a linear regression model when SAP was kept (p = 0.008) and removed (p = 0.003). There was also a considerable increase in the size of Kambin's triangle if the SAP was removed. CONCLUSIONS Here, the authors have provided the first reported systematic review of the literature of Kambin's triangle, its measurements at each lumbar level, and key areas of debate related to the definition of the working safe zone. These findings indicate that CT is heavily utilized for imaging of the safe zone, the area of Kambin's triangle tends to increase caudally, and variation exists between patients. Future studies should focus on using advanced imaging techniques for preoperative planning and establishing guidelines for surgeons.
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Affiliation(s)
| | | | | | - Nithin Gupta
- 1Campbell University School of Osteopathic Medicine, Lillington
| | | | - Elisabeth Kakmou
- 3Department of Neurosurgery, Duke University Hospital, Durham, North Carolina
| | - C Rory Goodwin
- 3Department of Neurosurgery, Duke University Hospital, Durham, North Carolina
| | - Norah A Foster
- 4Department of Orthopedic Surgery, Miami Valley Hospital, Centerville, Ohio; and
| | - Khoi D Than
- 3Department of Neurosurgery, Duke University Hospital, Durham, North Carolina
| | - Walter F Wiggins
- 5Department of Radiology, Duke University Hospital, Durham, North Carolina
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12
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Wang S, Yu HL, Zheng L, Ma JX, Wang H, Xiang LB, Chen Y. Randomized controlled trial of overall functional exercise process in perioperative of percutaneous transforaminal endoscopic discectomy. Medicine (Baltimore) 2022; 101:e32544. [PMID: 36596075 PMCID: PMC9803417 DOI: 10.1097/md.0000000000032544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Percutaneous transforaminal endoscopic discectomy (PTED) has become the standard surgery for the patients of lumbar disc herniation with the advantages of less trauma and rapid recovery. But still some patients have poor prognosis after PTED. A major risk factor associated with the poor prognosis may be the unfit function exercise. OBJECTIVE To discuss the effect of overall functional exercise process for PTED. METHODS In January 2019 to June 2020, a single center randomized controlled trial was proceeded. The patients scheduled for PTED were randomly divided into the experimental group, which received overall functional exercise and the control group, which received routine process. The overall process included advance, whole-course exercise and integrating of traditional Chinese medical methods. The general information, visual analog scale (VAS) score and Oswestry Dysfunction Index (ODI) score at each follow-up point perioperative period were compared between the 2 groups. RESULTS There were no significant differences in the general information, the preoperative VAS and ODI. On the 3rd day after operation, the VAS of low back pain and leg pain in the experimental group were lower than the control group. One month after operation, the VAS of low back pain in the experimental group was lower than that in the control group. One to 3 months after operation, the ODI scores of the experimental group were better than that of the control group. There was no significant difference in modified MacNab index between the experimental group and the control group. CONCLUSION Function exercise is important for the prognosis of minimally invasive lumbar surgery. The overall function exercise process perioperative is helpful to relieve the short-term pain of the patients and significantly improve the prognosis.
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Affiliation(s)
- Shuang Wang
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenhe District, Shenyang, China
| | - Hai-Long Yu
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenhe District, Shenyang, China
| | - Liang Zheng
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenhe District, Shenyang, China
| | - Jun-Xiong Ma
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenhe District, Shenyang, China
| | - Hong Wang
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenhe District, Shenyang, China
| | - Liang-Bi Xiang
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenhe District, Shenyang, China
| | - Yu Chen
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenhe District, Shenyang, China
- * Correspondence: Yu Chen, Department of Orthopedics, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenhe District, Shenyang 110016, China (e-mail: )
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13
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Li T, Wu G, Dong Y, Song Z, Li H. Kambin's triangle-related data based on magnetic resonance neurography and its role in percutaneous transforaminal endoscopic lumbar interbody fusion. J Orthop Surg Res 2022; 17:543. [PMID: 36522770 PMCID: PMC9756519 DOI: 10.1186/s13018-022-03428-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 12/02/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The percutaneous transforaminal endoscopic lumbar interbody fusion (PETLIF) has many advantages as a new minimally invasive surgical technique, and its surgical approach passes through the Kambin's triangle. One of the greatest challenges in completing PETLIF is avoiding nerve root damage. In previous studies, the relevant anatomic data do not correspond well with current surgical techniques, and there is a paucity of studies based on magnetic resonance neurography (MRN), which is the clearest imaging method for nerve roots. The purpose of this study was to analyze the safety of the PETLIF at each lumbar segment based on measured results from the MRN imaging data and to propose a novel method of intraoperative positioning. METHODS The coronal images with the clearest course of nerve roots were chosen for retrospective observation. During the PETLIF, the secure region of the operation was considered to be a trapezium. The following parameters were measured, respectively: trapezoid area, height, and median line length, as well as the relevant parameters of the positional relation between the point "O," the most secure operating center point of the secure region, and each osseous anatomic landmark. And the data were compared with the size of the cage to obtain safety. RESULTS At L1-S1, with the downward motion of the target intervertebral space, the area increased from (67.94 ± 15.22) mm2 to (140.99 ± 26.06) mm2, and the height increased from (7.23 ± 1.17) mm to (12.59 ± 1.63) mm. At L1-L5, the length of the median line was increased from (9.42 ± 1.70) mm to (12.70 ± 1.88) mm. Even though it was reduced to (11.59 ± 1.99) mm at L5-S1, it was still longer than that at L3-L4. The safety obtained by the primary observational indicator was 34.52%, 33.33%, 53.57%, 96.43%, and 77.38%, respectively, at L1-S1. The safety obtained by the two secondary observational indicators was 77.38% and 95.24% at L3-L4 and 100% at L4-S1. There was no point "O" outside the anatomic mark line. The intraoperative positioning method of the point "O" was as follows: It was located medially and horizontally approximately 3/5 of the anatomic mark line at L1-L5; the horizontal distances were (0.48 ± 0.67) mm, (1.20 ± 0.89) mm, (2.72 ± 1.01) mm, and (3.69 ± 1.47) mm, respectively. In addition, it was necessary to locate (3.43 ± 1.41) mm inward at about 4/5 of the anatomic mark line at L5-S1. CONCLUSIONS The MRN allows clearer and more accurate visualization of the nerve roots, and the basic anatomic study of the Kambin's triangle based on this technology is of practical clinical significance. In the current study, it is believed that, during the PETLIF, cage implantation is the safest at L4-L5, followed by L5-S1; L1-L3 is more likely to cause nerve root injury, and L3-L4 is not less likely. To improve safety, a comprehensive individualized imaging assessment should be performed before surgery. This study also provides an easy method of intraoperative localization, which helps avoid nerve root injury.
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Affiliation(s)
- Tianqi Li
- grid.479690.50000 0004 1789 6747Postgraduate Training Base of Dalian Medical University, Taizhou People’s Hospital, Jiangsu, 225300 China
| | - Gang Wu
- grid.89957.3a0000 0000 9255 8984Department of Orthopedics, The Affiliated Taizhou People’s Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, 366 Taihu Road, Taizhou, 225300 Jiangsu China
| | - Yongle Dong
- grid.479690.50000 0004 1789 6747Postgraduate Training Base of Dalian Medical University, Taizhou People’s Hospital, Jiangsu, 225300 China
| | - Zhiwei Song
- grid.479690.50000 0004 1789 6747Postgraduate Training Base of Nantong University, Taizhou People’s Hospital, Jiangsu, 225300 China
| | - Haijun Li
- grid.89957.3a0000 0000 9255 8984Department of Orthopedics, The Affiliated Taizhou People’s Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, 366 Taihu Road, Taizhou, 225300 Jiangsu China
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14
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Zhu D, Hu J, Wang L, Zhu J, Ma S, Liu B. A Comparison Between Modified Unilateral Extrapedicular and Bilateral Transpedicular Percutaneous Kyphoplasty in the Treatment of Lumbar Osteoporotic Vertebral Compression Fracture. World Neurosurg 2022; 166:e99-e108. [PMID: 35779757 DOI: 10.1016/j.wneu.2022.06.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Few researchers have verified the clinical efficacy and safety of the modified unilateral extrapedicular approach (mUEP) applied to the percutaneous kyphoplasty (PKP) in comparative studies with other puncture techniques. Compared with the bilateral transpedicular approach (BTP), whether mUEP PKP is a preferred treatment for lumbar osteoporotic vertebral compression fracture (OVCF) remains unclear. METHODS Patients treated by PKP for single-level lumbar OVCF in our institution from September 2019 to December 2020 were retrospectively enrolled. Patients were grouped according to the puncture techniques. Clinical and radiologic outcomes were evaluated preoperatively, postoperatively, and at follow-up. The clinical evaluation was performed by using visual analog scale for pain relief and Oswestry Disability Index for health status. Radiologic measurements contained anterior vertebral height, kyphotic angle, and bone cement distribution. RESULTS In total, 76 patients with a mean follow-up duration of 16.6 months were enrolled, including 34 patients in the mUEP PK group and 42 patients in the BTP PKP group. In the mUEP group, operation time, fluoroscopy times, and injected cement volume were significantly less than that in the BTP group (P < 0.01). Both visual analog scale and Oswestry Disability Index scores of all patients decreased significantly after surgery (P < 0.01), with no significant differences between the 2 groups at each follow-up. Both mUEP PKP and BTP PKP showed significant anterior height restoration and kyphotic angle correction (P < 0.01), with no significant differences between the 2 groups at each follow-up. Meanwhile, the mUEP PKP reduced the incidence of intraspinal cement leakage (P < 0.05), and no facet joint violation was found in mUEP PKP. CONCLUSIONS mUEP PKP could be clinically and radiographically equivalent to BTP PKP. However, it has advantages in reducing operation time and fluoroscopy times, lowering the risk of intraspinal cement leakage, and preventing the presence of facet joint violation. Compared with BTP PKP, the mUEP PKP seems to be an effective and alternative puncture technique for the treatment of lumbar OVCF after appropriate patient selection.
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Affiliation(s)
- Di Zhu
- Department of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Junnan Hu
- Department of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Lei Wang
- Department of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jichao Zhu
- Department of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Song Ma
- Department of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Baoge Liu
- Department of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
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15
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Waguia R, Gupta N, Gamel KL, Ukachukwu A. Current and Future Applications of the Kambin’s Triangle in Lumbar Spine Surgery. Cureus 2022; 14:e25686. [PMID: 35812644 PMCID: PMC9259071 DOI: 10.7759/cureus.25686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2022] [Indexed: 11/05/2022] Open
Abstract
Kambin’s triangle has become the anatomical location of choice when accessing the lumbar spine to treat degenerative spinal disorders. Currently, lumbar interbody fusion is the most common procedure utilizing this space; however, with the advent of the Kambin’s prism definition, advanced imaging modalities, and robotic-assisted techniques, lumbar spine surgery has become increasingly precise and less invasive. These technological and procedural advances have drastically reduced the rate of complications, improved patient outcomes, and expanded the use of the Kambin’s triangle to treat different pathologies utilizing cutting-edge techniques. In this review, the authors present the current uses of the Kambin’s triangle and the future application of this anatomical corridor in lumbar spine surgery.
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16
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Usefulness of 3D CT/MRI Fusion Imaging for the Evaluation of Lumbar Disc Herniation and Kambin's Triangle. Diagnostics (Basel) 2022; 12:diagnostics12040956. [PMID: 35454004 PMCID: PMC9031438 DOI: 10.3390/diagnostics12040956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/03/2022] [Accepted: 04/10/2022] [Indexed: 02/04/2023] Open
Abstract
Study design: Prospective study. Objective: The aim of this study is to visualize the morphology of a lumbar herniated disc and Kambin’s triangle in three dimensions (3D) based on preoperative CT/MRI fusion images. Methods: CT/MRI fusion images of 23 patients (10 males and 13 females; mean age 58.2 years) were used to evaluate Kambin’s triangle, which is created between the superior articular process (SAP), exiting nerve root (ENR), inferiorly by the superior endplate of the lower lumbar vertebra and dural canal medially at 60 degree and 45 degree endoscopic approach angles. The percentage of the safe usage of transforaminal endoscopic approach was evaluated to utilize a 5 mm dilater without partial facet resection in the fusion image. The 3D lumbar nerve root sleeve angulation (3DNRA), which is the angle between the axis of the thecal sac and the nerve root sleeve, was calculated. The herniated discs were also visualized in the CT/MRI fusion image. Results: The 3DNRA became smaller from L2 to S1. The L2 3DNRA was statistically larger than those of the other root, and the S1 3DNRA was significantly smaller than the others (p < 0.05). (L2, 41.0°; L3, 35.6°; L4, 36.4°; L5, 33.9°; and S1, 23.2°). The SAP-ENR distance at 60° was greatest at L4/5 (5.9 mm). Possible needle passages at 60° to each disc level were 89.1% at L2/3, 87.0% at L3/4 and 84.8% at L4/5. However, the safe 5 mm dilater passage at 60° without bony resection to each disc level were 8.7% at L2/3, 28.3% at L3/4 and 37.0% at L4/5. The 60° corridor at L2/3 was the narrowest (p < 0.01). All herniated discs were visualized in the fusion image and the root compression site was clearly demonstrated especially with foraminal/extraforaminal herniations. Conclusion: The 3D lumbar CT/MRI fusion image enabled a combined nerve-bony assessment of Kambin’s triangle and herniated disc. A fully endoscopic 5 mm dilater may retract the exiting nerve root in more than 60% of total cases. This new imaging technique could prove to be very useful for the safety of endoscopic lumbar disc surgery.
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17
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Wang R, Liang ZY, Chen XY, Chen CM. Technical Tips for Percutaneous Transforaminal Endoscopic Discectomy: A Three-step Maneuver for Puncture and Early Clinical Experience. Orthop Surg 2021; 14:104-110. [PMID: 34873865 PMCID: PMC8755869 DOI: 10.1111/os.13113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 04/19/2021] [Accepted: 05/26/2021] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE To investigate the feasibility and efficacy of percutaneous transforaminal endoscopic discectomy (PTED) with three-step maneuver for puncture (TSMP) for lumbar herniated disc (LDH). METHODS We performed a retrospective review of 30 patients who underwent PTED using TSMP for LDH and met inclusion criteria from January 2018 to September 2018. The primary outcome, leg or back pain, was assessed using Visual Analogue Scale (VAS). Patient surgical satisfaction was measured at 12 months post surgery using a five-point Likert scale. Potential prognostic factors measured were demographic characteristics, duration of symptom (DOS), and involved levels. Statistical analysis was performed using Fisher exact test and t-test. TSMP is a three-step maneuver that builds on the concept of needle puncture site and trajectory determination based on the principles of Kambin's triangle. First, accurate direction of the puncture is confirmed by inserting the needle horizontally. Then by gradually raising the needle tail in the manner described, the superior articular facet and the intervertebral foramen are sequentially located. Finally, the needle tip slides into the intervertebral foramen to reach the target superior articular facet. RESULTS Preoperative mean VAS was 7.6 ± 1.19, which decreased to 1.4 ± 0.97 at 12 months following treatment (P < 0.0001). Rates of surgical satisfaction per Likert scale were as follows: very satisfied and satisfied in 26 patients (86.7%). Three recurrent disc herniations of adjacent segmental levels were observed in the L5-S1 group at eight and 12 months after surgery. VAS scores at 12 months varied significantly between L4-L5 level surgery and L5-S1 level surgery groups (P < 0.01). CONCLUSION TSMP is a reliable technique for puncture into the intervertebral foramen.
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Affiliation(s)
- Rui Wang
- Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ze Yan Liang
- Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xin Yao Chen
- Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Chun Mei Chen
- Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, China
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18
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A Modified Transverse Process-Pedicle Approach Applied to Unilateral Extrapedicular Percutaneous Vertebroplasty. Pain Res Manag 2021; 2021:6493712. [PMID: 34721749 PMCID: PMC8556083 DOI: 10.1155/2021/6493712] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/01/2021] [Accepted: 10/12/2021] [Indexed: 12/24/2022]
Abstract
Objective To introduce a modified transverse process-pedicle puncture technique applied to unilateral extrapedicular percutaneous vertebroplasty (PVP) for the treatment of osteoporotic lumbar vertebral compression fractures. Methods A retrospective study was performed on 91 patients with osteoporotic vertebral compression fractures (OVCFs) who underwent unilateral extrapedicular PVP from June 2016 to September 2018. Lumbar and back pain was assessed through the visual analogue scale (VAS). Function recovery was assessed through the Oswestry disability index (ODI). Radiologic outcomes were assessed mainly on the basis of bone cement distribution and anterior vertebral height. Results A total of 101 fractured vertebrae were successfully treated using the extrapedicular technique without any recognized clinical complications. The postoperative VAS and ODI values were significantly lower than the corresponding preoperative values (P < 0.01). Radiologic outcomes in all fractured vertebrae showed that the diffusion of bone cement could exceed the midline of the vertebral body. There was no significant difference between preoperative and postoperative anterior vertebral heights (P < 0.05). Conclusion The modified transverse process-pedicle approach applied to unilateral extrapedicular percutaneous vertebroplasty is a simple, safe, and effective surgical method.
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19
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Kumari C, Gupta T, Gupta R, Kumar V, Sahni D, Aggarwal A, Neelkamal. Cadaveric anatomy of the lumbar triangular safe zone of Kambin's in North West Indian population. Anat Cell Biol 2021; 54:35-41. [PMID: 33619238 PMCID: PMC8017462 DOI: 10.5115/acb.20.243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 11/27/2022] Open
Abstract
A three dimensional triangular space ‘the Kambin’s triangle (KT)’ present on the dorsolateral aspect of the intervertebral disc, is considered to be a safe area for transforaminal approaches. It allows access to the exiting and traversing nerve roots, the thecal sac and to the intervertebral disc spaces. Our aim was to calculate the area of the triangle by measuring the height and base at all the intervertebral spaces bilaterally in the lumbar region in North West Indian cadavers and to assess the diameter of circle inscribed within this triangle which will correspond to the size of cannula inserted for the minimally invasive transforaminal approaches in this population. Five randomly chosen adult cadavers were used for this study. After clearing the area, the exiting nerve was identified. The height and base of the bony KTs (n=40) were measured with the help of digital Vernier’s calliper (accuracy 0.02 mm) to calculate the area of the KT. There is a steady increase in the area of the bony KT reaching maximum at the level of L4-5 intervertebral space. Statistically there were no differences in the calculated areas between right and left side. The mean diameter of inscribed circle within the triangle also showed gradual increase from 5.82 mm at L1-2 level, reaching maximum value of 7.26 mm at L4-5 level on the right side while on the left side the values were 5.66 mm and 8.16 mm respectively. Careful anatomical consideration is of utmost importance in transforaminal approaches during surgical or interventional procedures in this region. Cannula having external diameter ranging 6–8 mm is recommended for any interventional approach through Kambin’s space.
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Affiliation(s)
- Chiman Kumari
- Department of Anatomy, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Tulika Gupta
- Department of Anatomy, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Richa Gupta
- Department of Anatomy, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Vishal Kumar
- Department of Orthopaedics, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Daisy Sahni
- Department of Anatomy, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Anjali Aggarwal
- Department of Anatomy, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Neelkamal
- Department of Anatomy, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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20
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Yu T, Wu JP, Zhang J, Yu HC, Yuan TY, Xu DR, Yun ZH, He T, Liu R, Liu QY. Zina percutaneous screw fixation combined with endoscopic lumbar intervertebral fusion under intraoperative neuromonitoring: A case report. Medicine (Baltimore) 2021; 100:e24220. [PMID: 33725928 PMCID: PMC7982225 DOI: 10.1097/md.0000000000024220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 12/16/2020] [Indexed: 01/05/2023] Open
Abstract
INTRODUCTION Traditional open discectomy and intervertebral fusion surgery is the common strategy for lumbar disc herniation (LDH). However, it has the disadvantages of long recovery time and severe paravertebral soft tissue injury. Zina percutaneous screw fixation combined with endoscopic lumbar intervertebral fusion (ZELIF), as a novel minimally invasive surgical technique for LDH, has the advantages in quicker recovery, less soft tissue destruction, shorter hospital stays and less pain. We report a novel technique of ZELIF under intraoperative neuromonitoring (INM) for the treatment of LDH. PATIENT CONCERNS A 51-year-old male presented to our hospital with left lower extremity pain and numbness for 1 year. DIAGNOSIS Lumbar disc herniation (LDH). INTERVENTIONS This patient was treated with Zina percutaneous screw fixation combined with endoscopic neural decompression, endplate preparation, and intervertebral fusion through Kambin's triangle. Each step of the operation was performed under INM. OUTCOMES The follow-up period lasted 12 months; the hospitalization lasted 4 nights; the blood loss volume was 65 ml, and the time of operation was 266 min. INM showed no neurological damage during the surgery. No surgical complications, including neurological deterioration, cage migration, non-union, instrumentation failure or revision operation, were observed during the follow-up period. Visual Analogue Scale (VAS) score reduced from 7 to 1; the Oswestry Disability Index (ODI) decreased from 43 to 14; the EQ-5D score was 10 preoperatively and 15 at the final follow-up visit; the Physical Component Summary of the 36-Item Short Form Health Survey (SF-36) was 48 preoperatively and 49 at the last follow up visit; the SF-36 Mental Component Summary was 47 before surgery and decreased to 41 postoperatively. CONCLUSION ZELIF under INM may represent a feasible, safe and effective alternative to endoscopic intervertebral fusion and percutaneous screw fixation, for decompressing the lumbar's exiting nerve root directly with minimal invasion in selected patients.
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21
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Yamaya S, Tezuka F, Sugiura K, Takeuchi M, Manabe H, Morimoto M, Yamashita K, Takata Y, Sakai T, Maeda T, Sairyo K. Risk Factor for Additional Intravenous Medication during Transforaminal Full-endoscopic Lumbar Discectomy under Local Anesthesia. Neurol Med Chir (Tokyo) 2021; 61:236-242. [PMID: 33504730 PMCID: PMC7966206 DOI: 10.2176/nmc.oa.2020-0275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Transforaminal full-endoscopic lumbar discectomy (TELD) can be performed under local anesthesia. However, there have been no reports on risk factors for a change in vital signs or the need for additional medications to maintain adequate analgesia during this procedure. The purpose of this study was to identify risk factors for additional intravenous medication during TELD under local anesthesia. The following factors were retrospectively evaluated in 113 consecutive patients who underwent TELD under local anesthesia at our institution: demographic characteristics, radiological features at the intervertebral disc level, distance between the superior articular process and the exiting nerve root, height of the intervertebral disc, height of the bulging disc, height of the intervertebral foramen, and distance from the insertion site to the spinous process on magnetic resonance imaging (MRI) and computed tomography (CT) scans of the lumbar spine. Logistic regression analysis was performed to determine factors associated with the need for additional drugs. In all, 23 cases (20.4%) required additional intraoperative medications because of hypertension, hypotension, bradycardia, or pain. Logistic regression analysis revealed that age (partial regression coefficient 0.05, p = 0.02) and bulging disc height (partial regression coefficient −0.7, p = 0.003) influenced the need for additional drugs. There were significant associations of need for additional intravenous medication with older age (>62 years) and a smaller bulging disc height (<8.2 mm). Patients with these factors require close monitoring for changes in vital signs or increasing pain when performing TELD under local anesthesia and may need additional intravenous medication.
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Affiliation(s)
- Seiji Yamaya
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan.,Department of Orthopaedic Surgery, Sendai Nishitaga National Hospital, Sendai, Miyagi, Japan
| | - Fumitake Tezuka
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan
| | - Kosuke Sugiura
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan
| | - Makoto Takeuchi
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan
| | - Hiroaki Manabe
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan.,Department of Orthopedic Surgery, Tokushima Prefecture Naruto Hospital, Tokushima, Tokushima, Japan
| | - Masatoshi Morimoto
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan
| | - Kazuta Yamashita
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan
| | - Yoichiro Takata
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan
| | - Toshinori Sakai
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan
| | - Toru Maeda
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan
| | - Koichi Sairyo
- Department of Orthopedics, Tokushima University, Tokushima, Tokushima, Japan
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22
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Aydın AL, Sasani M, Sasani H, Üçer M, Hekimoğlu M, Öktenoğlu T, Özer AF. Comparison of Two Minimally Invasive Techniques with Endoscopy and Microscopy for Extraforaminal Disc Herniations. World Neurosurg 2020; 144:e612-e621. [DOI: 10.1016/j.wneu.2020.09.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/02/2020] [Accepted: 09/04/2020] [Indexed: 11/25/2022]
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23
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Ju CI. Technical Considerations of the Transforaminal Approach for Lumbar Disk Herniation. World Neurosurg 2020; 145:597-611. [PMID: 32916343 DOI: 10.1016/j.wneu.2020.08.229] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/30/2020] [Accepted: 08/31/2020] [Indexed: 11/16/2022]
Abstract
Transforaminal full endoscopic lumbar diskectomy (TELD) is a typical minimally invasive surgery, with the associated benefit of decreased possibility of anatomic structural injury, and is an effective alternative to open diskectomy. Among the various endoscopic spinal surgical techniques currently available, TELD is the most basic and traditional surgery that can be performed through the transforaminal route; it has been used for >30 years. Recently, with the advancements in surgical techniques, TELD has been successfully performed for patients with lumbar disk herniation of different types. However, beginner surgeons are unfamiliar with the anatomy of transforaminal endoscopic surgery and this surgery has a steep learning curve to date. If not well prepared, operators may experience complications that require reoperation in the early stages. These complications may include symptomatic incomplete decompression, exiting nerve root injury, dural tearing, and rarely, hematoma, infection, and visceral injury. Here, we propose several technical guidelines for TELD to increase the possibility of successful lumbar diskectomy and to reduce the incidence of complications. The first step is the accurate anatomic understanding of Kambin triangle and determining the appropriate endoscopic access angle, depending on the type of disk herniation. The second step is to determine a safe and easily accessible entry point and then landing and docking the working sleeve as close to the target as possible without causing exiting nerve root injury. The third step is complete decompression of the symptomatic nerve with free mobilization of the neural tissue. The final step involves performing foraminoplasty using an advanced technique to overcome the limitations associated with TELD in difficult cases.
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Affiliation(s)
- Chang Il Ju
- Department of Neurosurgery, College of Medicine, Chosun University, Gwangju, South Korea.
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Fan G, Liu H, Wang D, Feng C, Li Y, Yin B, Zhou Z, Gu X, Zhang H, Lu Y, He S. Deep learning-based lumbosacral reconstruction for difficulty prediction of percutaneous endoscopic transforaminal discectomy at L5/S1 level: A retrospective cohort study. Int J Surg 2020; 82:162-169. [PMID: 32882401 DOI: 10.1016/j.ijsu.2020.08.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/30/2020] [Accepted: 08/19/2020] [Indexed: 01/11/2023]
Abstract
BACKGROUND Deep learning has been validated as a promising technique for automatic segmentation and rapid three-dimensional (3D) reconstruction of lumbosacral structures on CT. Simulated foraminoplasty of percutaneous endoscopic transforaminal discectomy (PETD) through the Kambin triangle may benefit viability assessment of PETD at L5/S1 level. MATERIAL AND METHODS Medical records and radiographic data of patients with L5/S1 lumbar disc herniation (LDH) who received a single-level PETD from March 2013 to February 2018 were retrospectively collected and analyzed. Deep learning was adopted to achieve semantic segmentation of lumbosacral structures (nerve, bone, disc) on CT, and the segmented masks on reconstructed 3D models. Two observers measured the area of the Kambin triangle on 6 selected deep learning-derived 3D (DL-3D) models and ground truth-derived 3D (GT-3D) models, and intraclass correlation coefficient (ICC) was calculated to assess the test-retest and interobserver reliability. Foraminoplasty of PETD was simulated on L5/S1 lumbosacral 3D models. Patients with extended foraminoplasty or stuck canula occurs on simulations were predicted as PETD-difficult cases (Group A). The remaining patients were regarded as PETD-normal cases (Group B). Clinical information and outcomes were compared between the two groups. RESULTS Deep learning-derived 3D models of lumbosacral structures (nerves, bones, and disc) from thin-layer CT were reliable. The area of the Kambin triangle was 161.27 ± 40.10 mm2 on DL-3D models and 153.57 ± 32.37 mm2 on GT-3D models (p = 0.206). Reliability test revealed strong test-retest reliability (ICC between 0.947 and 0.971) and interobserver reliability of multiple measurements (ICC between 0.866 and 0.961). The average operation time was 99.62 ± 17.39 min in Group A and 88.93 ± 21.87 min in Group B (P = 0.025). No significant differences in patient-reported outcomes or complications were observed between the two groups (P > 0.05). CONCLUSION Deep learning achieved accurate and rapid segmentations of lumbosacral structures on CT, and deep learning-based 3D reconstructions were efficacious and reliable. Foraminoplasty simulation with deep learning-based lumbosacral reconstructions may benefit surgical difficulty prediction of PETD at L5/S1 level.
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Affiliation(s)
- Guoxin Fan
- Department of Spine Surgery, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
| | - Huaqing Liu
- Artificial Intelligence Innovation Center, Research Institute of Tsinghua, Pearl River Delta, Guangzhou, 510735, China
| | - Dongdong Wang
- Department of Orthopaedic Trauma, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chaobo Feng
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China; Spinal Pain Research Institute, Tongji University School of Medicine, Shanghai, China
| | - Yufeng Li
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Bangde Yin
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhi Zhou
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China; Spinal Pain Research Institute, Tongji University School of Medicine, Shanghai, China
| | - Xin Gu
- Department of Orthopaedics, Changzheng Hospital Affiliated to the Second Military Medical University, Shanghai, China
| | - Hailong Zhang
- Department of Orthopaedics, Shanghai Putuo People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yi Lu
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, USA
| | - Shisheng He
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China; Spinal Pain Research Institute, Tongji University School of Medicine, Shanghai, China.
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Awake percutaneous transforaminal lumbar interbody fusion with expandable cage and robotic-assisted navigation and instrumentation: Case report and review of literature. INTERDISCIPLINARY NEUROSURGERY 2020. [DOI: 10.1016/j.inat.2020.100685] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Can H, Unal TC, Dolas I, Guclu G, Diren F, Dolen D, Gomleksiz C, Aydoseli A, Civelek E, Sencer A. Comprehensive Anatomic and Morphometric Analyses of Triangular Working Zone for Transforaminal Endoscopic Approach in Lumbar Spine: A Fresh Cadaveric Study. World Neurosurg 2020; 138:e486-e491. [PMID: 32147551 DOI: 10.1016/j.wneu.2020.02.160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 01/17/2023]
Abstract
OBJECTIVE The aim of this study is to provide essential information for endoscopic transforaminal approach by performing morphometric analysis of the triangular working zone (TWZ) in fresh cadavers. METHODS Fifteen fresh human cadavers (9 women and 6 men) with no history of spinal surgery were used in this study. Anatomic dissection of 150 foraminal levels were performed. Significant surgical landmarks constructing TWZ were measured bilaterally from L1-2 to L5-S1 on 15 fresh cadavers. The relationship between traversing roots and intervertebral discs was defined. RESULTS Base, height, and hypotenuse measurements of TWZ were longer as the level lowered. Mean base height and hypotenuse of TWZ were 12.15 mm, 11.29 mm, and 16.69 mm (L1-2); 17.94 mm, 17.18 mm, and 28.03 mm (L5-S1), respectively. TWZ was triangular shaped at the upper lumbar levels (L1-2, L2-3, and L3-4), and trapezoid at the lower lumbar levels (L4-5 and L5-S1). Going down the levels, the exiting root angle was narrower, the mean exiting angle of the L5 root being 28.23°. All L2 and L3 traversing roots and nearly all L4 traversing roots (86.7%) originated from below the disc level. Forty percent of L5 traversing roots originated above the disc level, and 53.3% originated at the disc level. Most S1 traversing roots originated at the proximal margin of the disc level (80%). CONCLUSIONS Our study reveals a detailed morphometric analysis of TWZ. Understanding the foraminal anatomy is crucial for safely performing transforaminal endoscopic surgery. The learning curve of transforaminal surgery can be reduced by garnering knowledge of TWZ anatomy.
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Affiliation(s)
- Halil Can
- Department of Neurosurgery, Biruni University Faculty of Medicine, Istanbul, Turkey; Department of Neurosurgery, Medicine Hospital, Istanbul, Turkey
| | - Tugrul Cem Unal
- Department of Neurosurgery, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey.
| | - Ilyas Dolas
- Department of Neurosurgery, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Gucluhan Guclu
- Department of Neurosurgery, Bakirkoy Dr Sadi Konuk Training and Research Hospital, Istanbul, Turkey
| | - Furkan Diren
- Department of Neurosurgery, Gaziosmanpasa Taksim Training and Research Hospital, Istanbul, Turkey
| | - Duygu Dolen
- Department of Neurosurgery, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Cengiz Gomleksiz
- Department of Neurosurgery, Silivri State Hospital, Istanbul, Turkey
| | - Aydin Aydoseli
- Department of Neurosurgery, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Erdinc Civelek
- Department of Neurosurgery, Gaziosmanpasa Taksim Training and Research Hospital, Istanbul, Turkey
| | - Altay Sencer
- Department of Neurosurgery, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
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Fanous AA, Tumialán LM, Wang MY. Kambin's triangle: definition and new classification schema. J Neurosurg Spine 2020; 32:390-398. [PMID: 31783346 DOI: 10.3171/2019.8.spine181475] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 08/21/2019] [Indexed: 11/06/2022]
Abstract
Kambin's triangle is an anatomical corridor used to access critical structures in a variety of spinal procedures. It is considered a safe space because it is devoid of vascular and neural structures of importance. Nonetheless, there is currently significant variation in the literature regarding the exact dimensions and anatomical borders of Kambin's triangle. This confusion was originally caused by leaving the superior articular process (SAP) unassigned in the description of the working triangle, despite Kambin identifying that structure in his original report. The SAP is the most relevant structure to consider when accessing the transforaminal corridor. Leaving the SAP unassigned has led to an open-handed application of the term "Kambin's triangle." That single eponym currently has two potential meanings, one meaning for endoscopic surgeons working through a corridor in the intact spine and a second meaning for surgeons accessing the disc space after a complete or partial facetectomy. Nevertheless, an anatomical corridor should have one consistent definition to clearly communicate techniques and use of instrumentation performed through that space. As such, the authors propose a new surgically relevant classification of this corridor. Assigning the SAP a border requires adding another dimension to the triangle, thereby transforming it into a prism. The term "Kambin's prism" indicates the assignment of a border to all relevant anatomical structures, allowing for a uniform definition of the 3D space. From there, the classification scheme considers the expansion of the corridor and the extent of bone removal, with a particular focus on the SAP.
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Affiliation(s)
- Andrew A Fanous
- 1Department of Neurosciences, INOVA Health System, Falls Church, Virginia
| | - Luis M Tumialán
- 2Department of Neurosurgery, The Barrow Neurological Institute, Phoenix, Arizona; and
| | - Michael Y Wang
- 3Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida
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Relationship of the Exiting Nerve Root and Superior Articular Process in Kambin's Triangle: Assessment of Lumbar Anatomy Using Cadavers and Computed Tomography Imaging. World Neurosurg 2020; 137:e336-e342. [PMID: 32028008 DOI: 10.1016/j.wneu.2020.01.195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 01/24/2020] [Accepted: 01/25/2020] [Indexed: 10/25/2022]
Abstract
BACKGROUND Percutaneous transforaminal endoscopic diskectomy has been a major treatment for lumbar disk herniation. However, damage to exiting nerve roots is one of the most severe complications in this surgery. In this paper, the relationship of the exiting nerve root and the superior articular process in Kambin's triangle of the lumbar intervertebral foramen was assessed using cadavers and computed tomography (CT) imaging. METHODS The anatomic relationship between the exiting nerve root and the superior articular process in Kambin's triangle of the intervertebral foramen was investigated on 6 cadavers. The distance between the exiting nerve and the superior articular process of the L1-2 to L5-S1 intervertebral foramina was measured using multiplane reconstruction. RESULTS The bone-nerve space between the exiting nerve root and the superior articular process in Kambin's triangle was quite narrow both in cadaver and CT imaging study. The distance of the L5-S1 intervertebral foramen was the greatest, which was no more than 5.77 ± 0.56 mm. The distances increased gradually from the tip to the root, and the distances between the root and the tip were 0.91 ± 0.31 to 1.86 ± 0.57 mm, which took on a trapezoid shape that was relatively narrow at the proximal end and wider at the distal end. CONCLUSIONS The bone-nerve space between the exiting nerve root and the superior articular process in Kambin's triangle of the lumbar intervertebral foramen was exceedingly narrow. It is necessary to perform a foraminoplasty to enlarge the working space and decrease the possibility of injury to the exiting nerve root.
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Dannebrock FA, Zardo EDA, Ziegler MS, Severo CMD, Abramczuk J, Vialle E, Radaelli G, Schwanke CHA, Soder RB. EVALUATION OF THE LUMBAR SAFETY TRIANGLE THROUGH MAGNETIC RESONANCE IMAGING. COLUNA/COLUMNA 2019. [DOI: 10.1590/s1808-185120191804196935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT Objective: To evaluate the lumbar triangular safety zone, its boundaries and its relationship with the dorsal root ganglion through Magnetic Resonance Imaging (MRI). Methods: The boundaries, shape and dimensions of 303 triangular safety zones were analyzed in Tesla 3.0 Magnetic Resonance Imaging (MRI) coronal sections from L2 to L5, including the dorsal root ganglion. Results: The sample consisted of 101 patients with a mean age of 32 years. The height of the triangular safety zone was formed by the lateral edge of the dura mater, the width by the upper plateau of the lower vertebra and the hypotenuse by the corresponding nerve root. The mean dimensions and the area varied according to the level studied. The dorsal root ganglion invaded the dimensions of the triangle in all the images studied. Conclusion: Based on the data and the analyses performed, we concluded that knowledge of the boundaries of the triangular safety zone through MRI increases the safety of minimally invasive procedures in the lumbar spine. Level of evidence I; Diagnostic studies – Investigation of a diagnostic test.
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Affiliation(s)
| | | | | | | | - Joel Abramczuk
- Pontifícia Universidade Católica do Rio Grande do Sul, Brazil
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Yu P, Wang Y, Wu X, Liu Z, Liu F, Li Q, Lin L, Li Y. A digital anatomic investigation of the safe triangle areas for L1-5 percutaneous minimally invasive discectomy. Surg Radiol Anat 2019; 42:103-110. [PMID: 31440808 DOI: 10.1007/s00276-019-02303-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 08/12/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE To reconstruct the three-dimensional safe triangle areas at L1-5 based on the computed tomography digital data, analyze the safe scopes for the puncture location and angles, and provide anatomic references for percutaneous lumbar discectomy. METHODS Computed tomography data from patients and control group were imported from the database and anatomical reference parameters were measured in Mimics software. The rebuilt model was rotated clockwise along the M-axis to measure the inscribed circle radius of the safe triangle at different angles. Based on the outer diameter of the largest cannula, the safe angles were calculated. The distances between points on the projection of safe triangle-inscribed circle and the upper lumbar spinous process were measured. Similarly, while the safe triangle was on the left side, the model was contra-rotated to measure all the parameters. RESULTS There was no significant difference between the patient and control group in both the least distance between the selected anatomical reference locations and the safe triangle-inscribed circle radius at L4-5. According to the series which had a largest cannula of 2.5 mm, the safe puncture angles increased with the descending disc levels. The optimal angles were 40°-45° for L1-2, 45°-50° for L2-3, 50° for L3-4, and 55° for L4-5 separately. The differences between genders in the distances of paired reference points were significant. CONCLUSIONS Individual safe localization of the percutaneous puncture could be obtained by analyzing the three-dimensional relationship between the puncture localization and anatomical landmarks.
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Affiliation(s)
- Penghui Yu
- Department of Human Anatomy, Hunan University of Medicine, Huaihua, 418000, Hunan, China
| | - Yanfang Wang
- School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Xiuyu Wu
- Department of Human Anatomy, Hunan University of Medicine, Huaihua, 418000, Hunan, China
| | - Zhenghai Liu
- Clinical Anatomy and Reproductive Medicine Application Institute, University of South China, Hengyang, 421001, Hunan, China
| | - Fang Liu
- Clinical Anatomy and Reproductive Medicine Application Institute, University of South China, Hengyang, 421001, Hunan, China
| | - Qiao Li
- Department of Human Anatomy, Hunan University of Medicine, Huaihua, 418000, Hunan, China
| | - Lusheng Lin
- Imaging Department of the First Affiliated Hospital, Hunan University of Medicine, Huaihua, 418000, Hunan, China
| | - Yanbing Li
- School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China.
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Iida K, Yoshikane K, Tono O, Tarukado K, Harimaya K. The effectiveness of a percutaneous endoscopic approach in a patient with psoas and epidural abscess accompanied by pyogenic spondylitis: a case report. J Med Case Rep 2019; 13:253. [PMID: 31412911 PMCID: PMC6694662 DOI: 10.1186/s13256-019-2193-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 07/08/2019] [Indexed: 11/25/2022] Open
Abstract
Background Psoas or epidural abscesses are often accompanied by pyogenic spondylitis and require drainage. Posterolateral percutaneous endoscopic techniques are usually used for hernia discectomy, but this approach is also useful in some cases of psoas or lumbar ventral epidural abscess. We here report a case of psoas and epidural abscesses accompanied by pyogenic spondylitis that was successfully treated by percutaneous endoscopic drainage. Case presentation Our patient was a 57-year-old Japanese woman who had been receiving chemotherapy for inflammatory breast cancer and who became unable to walk due to lower back and left leg pain. She was transported as an emergency to another hospital. Magnetic resonance imaging revealed psoas and epidural abscesses accompanied by pyogenic spondylitis, and methicillin-resistant Staphylococcus aureus was detected in a blood culture. Drainage of the psoas abscess was performed under echo guidance, but was not effective, and she was transferred to our institution. We performed percutaneous endoscopic drainage for the psoas and epidural abscesses. Immediate pain relief was achieved and the inflammatory reaction subsided after 8 weeks of antibiotic therapy with daptomycin. Conclusions Percutaneous endoscopy allowed us to approach the psoas and epidural abscesses directly, enabling the immediate drainage of the abscesses with less burden on the patient.
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Affiliation(s)
- Keiichiro Iida
- Department of Orthopaedic Surgery, Kyushu University Beppu Hospital, 4546 Tsurumibaru, Beppu, Oita, 874-0838, Japan.
| | - Koichi Yoshikane
- Department of Orthopaedic Surgery, Kitakyushu Municipal Medical Center, Fukuoka, Japan
| | - Osamu Tono
- Department of Orthopaedic Surgery, Kyushu University Beppu Hospital, 4546 Tsurumibaru, Beppu, Oita, 874-0838, Japan
| | - Kiyoshi Tarukado
- Department of Orthopaedic Surgery, Kyushu University Beppu Hospital, 4546 Tsurumibaru, Beppu, Oita, 874-0838, Japan
| | - Katsumi Harimaya
- Department of Orthopaedic Surgery, Kyushu University Beppu Hospital, 4546 Tsurumibaru, Beppu, Oita, 874-0838, Japan
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Percutaneous Endoscopic Transforaminal Decompression in the Treatment of Patients with Migrated Lumbar Disc Herniation: A Retrospective Study. World Neurosurg 2019; 128:e562-e569. [DOI: 10.1016/j.wneu.2019.04.195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/21/2019] [Accepted: 04/22/2019] [Indexed: 11/18/2022]
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Tumialán LM, Madhavan K, Godzik J, Wang MY. The History of and Controversy over Kambin’s Triangle: A Historical Analysis of the Lumbar Transforaminal Corridor for Endoscopic and Surgical Approaches. World Neurosurg 2019; 123:402-408. [DOI: 10.1016/j.wneu.2018.10.221] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 01/10/2023]
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Zhu R, Dean K, Mehta N, Gupta A, Gruber J, Gulati A. CT angiography depicted lumbar spinal artery anatomic course: defining a safer zone for lumbar sympathetic and splanchnic blocks. Reg Anesth Pain Med 2019; 44:rapm-2018-100097. [PMID: 30770419 DOI: 10.1136/rapm-2018-100097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 12/16/2018] [Accepted: 12/19/2018] [Indexed: 11/03/2022]
Abstract
INTRODUCTION Determining safer techniques for lumbar injections is an important goal in pain medicine. This study aims to characterize the location of the T10-L5 spinal arteries using CT angiogram scans to define a safer approach for sympathetic and splanchnic blocks that minimizes intra-arterial injection. METHODS CT angiograms of 68 patients were included this study. The path of the spinal arteries from the aorta origin along the vertebral body to the neural foramina was traced on axial CT images. The sagittal plane of the vertebral body was divided into nine quadrants to map the path of a spinal artery at a vertebral level. At a given vertebral level and laterality, the presence of an artery as well as the quadrants the artery traveled in along its path were recorded. RESULTS At the anterior vertebral body, >90% of the spinal arteries were observed either at or below the pedicle level. At the middle portion of the vertebral body from T11 to L3, >80% of the spinal arteries were found at the pedicle level. For the posterior portion of the vertebral bodies at L4 and L5, the spinal arteries terminated almost universally below the pedicle level. For other levels at the posterior vertebral bodies, the spinal arteries were equivocally located at or below the pedicle level. CONCLUSION Using routine anatomic landmarks visible on CT imaging, we classified the anatomic course of low thoracic and lumbar spinal arteries originating from the aorta into the neural foraminal space. A safe recommendation to avoid intra-arterial injection for a splanchnic or lumbar sympathetic is to start above the pedicle and add a slight caudal angulation to the needle trajectory to avoid disc injury at the anterolateral vertebral body.
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Affiliation(s)
- Richard Zhu
- Interventional Pain Management, Greenwich Hospital, Greenwich, Connecticut, USA
| | - Kathryn Dean
- Radiology, Cornell University Joan and Sanford I Weill Medical College, New York City, New York, USA
| | - Neel Mehta
- Anesthesiology, Cornell University Joan and Sanford I Weill Medical College, New York City, New York, USA
| | - Ajay Gupta
- Radiology, Cornell University Joan and Sanford I Weill Medical College, New York City, New York, USA
| | - Jesse Gruber
- Anesthesiology, NewYork-Presbyterian Hospital, New York City, New York, USA
| | - Amitabh Gulati
- Anesthesiology, Memorial Sloan Kettering Cancer Center, New York City, New York, USA
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Minimally Invasive, Far Lateral Lumbar Microdiscectomy with Intraoperative Computed Tomography Navigational Assistance and Electrophysiological Monitoring. World Neurosurg 2019; 122:e1228-e1239. [DOI: 10.1016/j.wneu.2018.11.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 11/02/2018] [Accepted: 11/04/2018] [Indexed: 11/19/2022]
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