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Li H, Xiao C, Pan H, Yang H, Lei Y, Wang H, Li S. Surgical Strategy for Lumbar Disc Herniation based on the MSU Classification: Percutaneous Endoscopic Lumbar Discectomy versus Transforaminal Lumbar Interbody Fusion: A 5-year Retrospective Study. Orthop Surg 2024. [PMID: 38961670 DOI: 10.1111/os.14145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 06/01/2024] [Accepted: 06/04/2024] [Indexed: 07/05/2024] Open
Abstract
OBJECTIVE Currently, there is no established guideline on whether to opt for percutaneous endoscopic lumbar discectomy (PELD) or traditional transforaminal lumbar interbody fusion (TLIF) surgery based on specific types of lumbar disc herniation (LDH). Based on the Michigan State University (MSU) classification system, this study conducted a medium- to long-term follow-up analysis of two surgical methods over 5 years for the first time, aiming to provide empirical evidence to assist in making more informed decisions before surgery for LDH treatment. METHODS This was a retrospective study that included 273 patients with single-level LDH who underwent PELD or TLIF treatment at our hospital between January 1, 2016, and December 31, 2018. Detailed metrics included preoperative and postoperative visual analogue scale (VAS) scores and Oswestry disability index (ODI) at 1-day, 1-week, 1-year, and 5-year follow-ups. Complications, recurrences, and 5-year postoperative modified MacNab criteria scores were also recorded. Statistical methods included independent sample t-tests, repeated measures analysis of variance (ANOVA), and χ2 tests. RESULTS Classified into seven groups according to the MSU classification, it was found that there was an improvement in the VAS and ODI scores at four postoperative follow-ups (p < 0.001). PELD showed better results than TLIF in reducing pain and improving the ODI scores in the classifications of 3B, 2B, and 2C (p < 0.05). TLIF demonstrated consistent superiority over PELD in 2A, 2AB, 3A, and 3AB classifications (p < 0.05). The total recurrence rate in the PELD group (11.05%) within 5 years after surgery was higher (p < 0.05) than that in the TLIF group (3.96%). These were mainly concentrated in the 2A, 2AB, 3A, and 3AB types. Moreover, the rate of excellent and good outcomes in the PELD was higher than in the TLIF but no significant difference (χ2 = 1.0568, p = 0.5895). CONCLUSION This study suggests that PELD and TLIF may relieve LDH, but have advantages under different MSU classifications. The MSU classification has specific guiding significance and could aid in the surgical selection of PELD or TLIF to achieve optimal treatment outcomes for patients with lumbar disc herniation.
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Affiliation(s)
- Hongtao Li
- Department of Spine Surgery, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Changming Xiao
- Department of Spine Surgery, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Hongyu Pan
- Department of Spine Surgery, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Haomiao Yang
- Department of Spine Surgery, The Nanjing TCM Hospital Affiliated to Nanjing University of Traditional Chinese Medicine, Nanjing, China
| | - Yang Lei
- Department of Spine Surgery, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Haozhong Wang
- Department of Spine Surgery, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Sen Li
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
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Roca AM, Anwar FN, Nie JW, Hartman TJ, Medakkar SS, Loya AC, MacGregor KR, Oyetayo OO, Zheng E, Federico VP, Lopez GD, Sayari AJ, Singh K. Prognostic value in preoperative Veterans RAND-12 mental Component score on clinical outcomes for patients undergoing minimally invasive transforaminal lumbar interbody fusion. J Clin Neurosci 2024; 125:12-16. [PMID: 38733898 DOI: 10.1016/j.jocn.2024.04.030] [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: 01/19/2024] [Revised: 04/25/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024]
Abstract
No study has examined the prognostic value of the Veterans RAND-12 (VR-12) Mental Component Score (MCS) on postoperative outcomes in minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) patients. This study examines the effect of preoperative VR-12 MCS on postoperative patient-reported outcome measures (PROMs) in MIS-TLIF patients. Patients were separated into 2 cohorts: VR-12 MCS < 50 and VR-12 MCS ≥ 50. PROMs of VR-12 MCS/Physical Component Score (PCS), Short Form-12 (SF-12) MCS/PCS, Patient-Reported Outcomes Measurement Information System-Physical Function (PROMIS-PF), Patient Health Questionnaire-9 (PHQ-9), Visual Analog Scale (VAS) Back/Leg Pain (VAS-BP/LP), and Oswestry Disability Index (ODI) were collected.Of 329 patients, 151 were in the VR-12 MCS < 50 cohort. The VR-12 MCS < 50 cohort reported significantly inferior scores in all PROMs preoperatively, significantly inferior VR-12 MCS, SF-12 MCS, PROMIS-PF, PHQ-9, and ODI scores at 6-weeks postoperatively, and significantly inferior scores in all PROMs, except for VAS-BP at final follow-up. Magnitude of 6-week postoperative improvement was significantly greater in the VR-12 MCS < 50 cohort for VR-12 MCS, SF-12 MCS, and PHQ-9. Magnitude of final postoperative improvement was significantly greater in the VR-12 MCS < 50 cohort for VR-12 MCS, SF-12 MCS/PCS, and PHQ-9. MCID achievement rates were significantly greater in the VR-12 MCS < 50 cohort for VR-12 MCS, SF-12 MCS, and PHQ-9. MIS-TLIF patients with lesser preoperative VR-12 MCS reported inferior postoperative outcomes in mental health, physical function, pain, and disability. However, patients with inferior preoperative mental health reported greater rates of clinically meaningful improvement in mental health. Inferior preoperative mental health does not limit postoperative improvement in patients undergoing MIS-TLIF.
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Affiliation(s)
- Andrea M Roca
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Fatima N Anwar
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - James W Nie
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Timothy J Hartman
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Srinath S Medakkar
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Alexandra C Loya
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Keith R MacGregor
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Omolabake O Oyetayo
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Eileen Zheng
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Vincent P Federico
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Gregory D Lopez
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Arash J Sayari
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States
| | - Kern Singh
- Department of Orthopaedic Surgery, Rush University Medical Center, 1611 W. Harrison St. Suite #300, Chicago, IL 60612, United States.
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Takaki Y, Tanida S, Murata K, Shimizu T, Matsuda S, Otsuki B. Pressure Dynamics on Intervertebral Disc Cages in Transforaminal Lumbar Interbody Fusion: A Cadaver Study. World Neurosurg 2024; 185:e1321-e1329. [PMID: 38521226 DOI: 10.1016/j.wneu.2024.03.080] [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: 02/27/2024] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 03/25/2024]
Abstract
OBJECTIVE This study aimed to quantify the change in pressure on the cage during compression manipulation in lumbar interbody fusion. While the procedure involves applying compression between pedicle screws to press the cage against the endplate, the exact compression force remains elusive. We hypothesize that an intact facet joint might serve as a fulcrum, potentially reducing cage pressure. METHODS Pressure on the intervertebral disc cage was measured during compression manipulation in 4 donor cadavers undergoing lumbar interbody fusion. Unilateral facetectomy models with both normal and parallel compression and bilateral facetectomy models were included. A transforaminal lumbar interbody fusion cage with a built-in load cell measured the compression force. RESULTS Pressure data from 14 discs indicated a consistent precompression pressure average of 68.16 N. Following compression, pressures increased to 125.99 N and 140.84 N for normal and parallel compression postunilateral facetectomy, respectively, and to 154.58 N and 150.46 N for bilateral models. A strong linear correlation (correlation coefficient: 0.967, P < 0.0001) between precompression and postcompression pressures emphasized the necessity of sufficient precompression pressure for achieving desired postcompression outcomes. None of the data showed a decrease in compression force to the cage with the compression maneuver. CONCLUSIONS Both normal and parallel compression maneuvers effectively increased the pressure on the cage, irrespective of the facet joint resection status. Compression manipulation consistently enhanced compressive force on the cage. However, when baseline pressure is low, the manipulation might not yield significant increases in compression force. This underlines the essential role of meticulous precompression preparation in enhancing surgical outcomes.
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Affiliation(s)
- Yoshiyama Takaki
- Department of Orthopaedic Surgery, Osaka Red Cross Hospital, Osaka, Japan
| | - Shimei Tanida
- Department of Orthopaedic Surgery, Shiga General Hospital, Shiga, Japan
| | - Koichi Murata
- Department of Orthopaedic and Musculoskeletal Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takayoshi Shimizu
- Department of Orthopaedic and Musculoskeletal Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shuichi Matsuda
- Department of Orthopaedic and Musculoskeletal Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Bungo Otsuki
- Department of Orthopaedic and Musculoskeletal Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
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Jitpakdee K, Sommer F, Gouveia E, Mykolajtchuk C, Boadi B, Berger J, Hussain I, Härtl R. Expandable cages that expand both height and lordosis provide improved immediate effect on sagittal alignment and short-term clinical outcomes following minimally invasive transforaminal lumbar interbody fusion (MIS TLIF). JOURNAL OF SPINE SURGERY (HONG KONG) 2024; 10:55-67. [PMID: 38567017 PMCID: PMC10982918 DOI: 10.21037/jss-23-106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/07/2024] [Indexed: 04/04/2024]
Abstract
Background Failure to restore lordotic alignment is not an uncommon problem following minimally invasive transforaminal lumbar interbody fusion (MIS TLIF), even with expandable cages that increase disc height. This study aims to investigate the effect of the expandable cage that is specifically designed to expand both height and lordosis. We evaluated the outcomes of MIS TLIF in restoring immediate postoperative sagittal alignment by comparing two different types of expandable cages. One cage is designed to solely increase disc height (Group H), while the other can expand both height and lordosis (Group HL). Methods Patients undergoing MIS TLIF using expandable cages were retrospectively reviewed, including 40 cases in Group H and 109 cases in Group HL. Visual analog scores of back and leg pain, and Oswestry disability index were collected. Disc height, disc angle, and sagittal alignment were measured. Complications were recorded, including early subsidence which was evaluated with computed tomography. Results Clinical and radiographic outcomes significantly improved in both groups postoperatively. Group HL showed superior improvement in segmental lordosis (4.4°±3.5° vs. 2.1°±4.8°, P=0.01) and disc angle (6.3°±3.8 vs. 2.2°±4.3°, P<0.001) compared to Group H. Overall incidence of early subsidence was 23.3%, predominantly observed during initial cases as part of the learning curve, but decreased to 18% after completion of the first 20 cases. Conclusions Expandable cages with a design specifically aimed at increasing lordotic angle can provide favorable outcomes and effectively improve immediate sagittal alignment following MIS TLIF, compared to conventional cages that only increase in height. However, regardless of the type of expandable cage used, it is crucial to avoid applying excessive force to achieve greater disc height or lordosis, as this may contribute to subsidence and a possible reduction in lordotic alignment restoration. Long-term results are needed to evaluate the clinical outcome, fusion rate, and maintenance of the sagittal alignment.
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Affiliation(s)
- Khanathip Jitpakdee
- Weill Cornell Medicine-Department of Neurosurgery, New York-Presbyterian Hospital – Och Spine, New York, NY, USA
- Department of Orthopedics, Queen Savang Vadhana Memorial Hospital, Chonburi, Thailand
| | - Fabian Sommer
- Weill Cornell Medicine-Department of Neurosurgery, New York-Presbyterian Hospital – Och Spine, New York, NY, USA
| | - Edna Gouveia
- Weill Cornell Medicine-Department of Neurosurgery, New York-Presbyterian Hospital – Och Spine, New York, NY, USA
- Department of Neurosurgery, Clinica Sagrada Esperança-Ilha, Luanda, Angola
| | - Catherine Mykolajtchuk
- Weill Cornell Medicine-Department of Neurosurgery, New York-Presbyterian Hospital – Och Spine, New York, NY, USA
| | - Blake Boadi
- Weill Cornell Medicine-Department of Neurosurgery, New York-Presbyterian Hospital – Och Spine, New York, NY, USA
| | - Jessica Berger
- Weill Cornell Medicine-Department of Neurosurgery, New York-Presbyterian Hospital – Och Spine, New York, NY, USA
| | - Ibrahim Hussain
- Weill Cornell Medicine-Department of Neurosurgery, New York-Presbyterian Hospital – Och Spine, New York, NY, USA
| | - Roger Härtl
- Weill Cornell Medicine-Department of Neurosurgery, New York-Presbyterian Hospital – Och Spine, New York, NY, USA
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Wang Y, Maimaiti A, Xiao Y, Tuoheti A, Zhang R, Maitusong M, Chen Q, Rexiti P. Hybrid cortical bone trajectory and modified cortical bone trajectory techniques in transforaminal lumbar interbody fusion at L4-L5 segment: A finite element analysis. Heliyon 2024; 10:e26294. [PMID: 38434416 PMCID: PMC10906328 DOI: 10.1016/j.heliyon.2024.e26294] [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: 08/23/2023] [Revised: 02/03/2024] [Accepted: 02/09/2024] [Indexed: 03/05/2024] Open
Abstract
Background The academia has increasingly acknowledged the superior biomechanical performance of the hybrid fixation technique in recent years. However, there is a lack of research on the hybrid fixation technique using BCS (Bilateral Cortical Screws) and BMCS (Bilateral Modified Cortical Screws). This study aims to investigate the biomechanical performance of the BCS and BMCS hybrid fixation technique in transforaminal lumbar interbody fusion (TLIF) at the L4-L5 segment in a complete lumbar-sacral finite element model. Methods Three cadaver specimens are used to construct three lumbar-sacral finite element models. The biomechanical properties of various fixation technologies (BCS-BCS, BMCS-BMCS, BMCS-BCS, and BCS-BMCS) are evaluated at the L4-5 segment with a TLIF procedure conducted, including the range of motion (ROM) of the L4-5 segment, as well as the stress experienced by the cage, screws, and rods. The testing is conducted under specific loading conditions, including a compressive load of 400 N and a torque of 7.5Nm, subjecting the model to simulate flexion, extension, lateral bending, and rotation. Results No significant variations are seen in the ROM at the L4-5 segment when comparing the four fixation procedures during flexion and extension. However, when it comes to lateral bending and rotation, the ROM is ordered in descending order as BCS-BCS, BCS-BMCS, BMCS-BMCS, and BMCS-BCS. The maximum stress experienced by the cage is observed to be highest within the BMCS-BCS technique during movements including flexion, extension, and lateral bending. Conversely, the BMCS-BMCS technique exhibits the highest cage stress levels during rotational movements. The stress applies to the screws and rods order the sequence of BCS-BCS, BCS-BMCS, BMCS-BCS, and BMCS-BMCS throughout all four working conditions. Conclusion The BMCS-BCS technique shows better biomechanical performance with less ROM and lower stress on the internal fixation system compared to other fixation techniques. BMCS-BMCS technology has similar mechanical performance to BMCS-BCS but has more contact area between screws and cortical bone, making it better for patients with severe osteoporosis.
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Affiliation(s)
- Yixi Wang
- First Clinical Medical College, Xinjiang Medical University, Urumqi, China
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Abulikemu Maimaiti
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Yang Xiao
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Abudusalamu Tuoheti
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Rui Zhang
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | | | - Qihao Chen
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Paerhati Rexiti
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Key Laboratory of High Incidence Disease Research in Xinjiang (Xinjiang Medical University), Ministry of Education, Urumqi, China
- Xinjiang Clinical Research Center for Orthopedics, Urumqi, China
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Ryu S, Yoon SJ, Lee CK, Yi S, Kim KN, Ha Y, Shin DA. The Combined Effects of RhBMP-2 and Systemic RANKL Inhibitor in Patients With Bone Density Loss Undergoing Posterior Lumbar Interbody Fusion: A Retrospective Observational Analysis With Propensity Score Matching. Neurospine 2023; 20:1186-1192. [PMID: 38171287 PMCID: PMC10762388 DOI: 10.14245/ns.2346702.351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/05/2023] [Accepted: 08/28/2023] [Indexed: 01/05/2024] Open
Abstract
OBJECTIVE The risks of nonunion and subsidence are high in patients with bone density loss undergoing spinal fusion surgery. The internal application of recombinant human bone morphogenic protein 2 (rhBMP-2) in an interbody cage improves spinal fusion; however, related complications have been reported. Denosumab, a human monoclonal antibody targeting the receptor activator of nuclear factor kappa B ligand (RANKL), hinders osteoblast differentiation and function. Therefore, this study aimed to observe the combined effect of the local application of rhBMP-2 in a lumbar cage and systemic RANKL inhibition on postoperative spinal fusion in patients with bone density loss undergoing posterior lumbar interbody fusion (PLIF). METHODS This retrospective observational study included 251 consecutive patients with spinal stenosis who underwent PLIF at a single center between 2017 and 2021. Clinical outcomes were assessed, and radiographic evaluations included lumbar flexion, extension, range of motion, and subsidence. Statistical analyses were conducted to identify the combined effect of the treatment and the subsidence and spinal fusion status. RESULTS One hundred patients were included in the final analysis. Denosumab treatment significantly reduced the rate of osteolysis (p = 0.013). When denosumab was administered in combination with rhBMP-2, the fusion status remained similar; however, the incidences of postoperative osteolysis and postoperative oozing day decreased. CONCLUSION The combined use of rhBMP-2 and RANKL inhibition in patients with bone density loss can enhance bone formation after PLIF with fewer complications than rhBMP-2 alone.
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Affiliation(s)
- Seungjun Ryu
- Department of Neurosurgery, Daejeon Eulji University Hospital, School of Medicine, Eulji University, Daejeon, Korea
| | - Seon-Jin Yoon
- Department of Neurosurgery, Spine and Spinal Cord Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Chang Kyu Lee
- Department of Neurosurgery, Spine and Spinal Cord Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Seong Yi
- Department of Neurosurgery, Spine and Spinal Cord Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Keung-Nyun Kim
- Department of Neurosurgery, Spine and Spinal Cord Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yoon Ha
- Department of Neurosurgery, Spine and Spinal Cord Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- POSTECH Biotech Center, Pohang University of Science and Technology, Pohang, Korea
| | - Dong Ah Shin
- Department of Neurosurgery, Spine and Spinal Cord Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Lee S, Jung JW, Lee SW, Kim KT, Kwon HD, Lee S, Ko YS, Kim P, Cho DC. Fusion Assessment of Oblique Lumbar Interbody Fusion Using Demineralized Bone Matrix: A 2-Year Prospective Study. Neurospine 2023; 20:1205-1216. [PMID: 38171289 PMCID: PMC10762405 DOI: 10.14245/ns.2347032.516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/24/2023] [Accepted: 12/03/2023] [Indexed: 01/05/2024] Open
Abstract
OBJECTIVE Although several studies have reported successful fusion rates after oblique lumbar interbody fusion (OLIF) using allografts or dimerized bone matrix (DBM) instead of autografts, whether OLIF can achieve satisfactory solid fusion without the use of autografts remains unclear. This study investigated the real fusion rates after OLIF using allografts and DBM, which were evaluated using both dynamic radiographs and computed tomography scans. METHODS We enrolled 79 consecutive patients who underwent minimally invasive OLIF followed by percutaneous pedicle screw fixation. All patients were treated with OLIF between L2 and L5 and underwent radiographic and clinical follow-ups at 12, 18, and 24 months after surgery. Radiographic assessment of fusion was performed using the modified BrantigaSteffee-Fraser (mBSF) scale, which was categorized as follows: grades I (radiographic pseudoarthrosis), II (indeterminate fusion), and III (solid radiographic fusion). Other radiologic and clinical outcomes were evaluated using the following parameters: vertebral slippage distance, disc height, subsidence, Oswestry Disability Index (ODI), and visual analogue scale (VAS). RESULTS Clinical outcomes demonstrated significant improvements in the VAS scores for back pain, leg pain, and ODI after surgery. Subsidence was present in 34 cases (35.4%) at 12 months postoperatively, which increased to 47.9% and reached 50.0% at 1.5 years and 2 years after surgery, respectively. The solid fusion rate after OLIF was 32.3% at 1 year, increased to 58.3% at 1.5 years, and reached 72.9% at 2 years. Radiographic pseudoarthrosis was 24.0% at 1 year, which decreased to 6.3% at 1.5 years and 3.1% at 2 years. CONCLUSION OLIF is a safe and effective surgical procedure for the treatment of degenerative lumbar diseases. The mBSF scale, which simultaneously evaluates both dynamic angles and bone bridge formation, offers great reliability for the radiological assessment of fusion. Moreover, OLIF using allografts and DBM, which is performed on one or 2 levels at L2-5, can achieve satisfactory fusion rates within 2 years after surgery.
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Affiliation(s)
- Sangseok Lee
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jin Woo Jung
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sang-Woo Lee
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Kyoung-Tae Kim
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Heum-Dai Kwon
- Department of Neurosurgery, Pohang Stroke and Spine Hospital, Pohang, Korea
| | - Subum Lee
- Department of Neurosurgery, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - Young San Ko
- Department of Neurosurgery, Keimyung University Dongsan Hospital, Keimyung University College of Medicine, Daegu, Korea
| | - Pius Kim
- Department of Neurosurgery, College of Medicine, Chosun University, Gwangju, Korea
| | - Dae-Chul Cho
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
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Tanasansomboon T, Robinson JE, Anand N. Minimally Invasive Transforaminal Lumbar Interbody Fusion: Strategies for Creating Lordosis with a Posterior Approach. Neurosurg Clin N Am 2023; 34:643-651. [PMID: 37718110 DOI: 10.1016/j.nec.2023.06.014] [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] [Indexed: 09/19/2023]
Abstract
The purpose of this article is to review the outcomes concerning lumbar lordosis restoration after the MIS-TLIF and to present strategies to create lumbar lordosis by using this MIS posterior approach. MIS-TLIF is an effective MIS lumbar interbody fusion that can achieve lumbar lordosis restoration. Several crucial steps aid in this sagittal profile correction during the MIS-TLIF, including the appropraite prone positioning, optimizing disc space preparation, maximizing disc space height, anterior interbody cage placement, and reducing the spondylolisthesis.
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Affiliation(s)
- Teerachat Tanasansomboon
- Department of Orthopedic Surgery, Cedars-Sinai Medical Center, 444 South San Vicente Boulevard, Suite 901, Los Angeles, CA 90048, USA; Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA; Department of Orthopedics, Center of Excellence in Biomechanics and Innovative Spine Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Jerry E Robinson
- University of Pittsburg Medical Center (UPMC), Harrisburg, PA, USA
| | - Neel Anand
- Department of Orthopedic Surgery, Cedars-Sinai Medical Center, 444 South San Vicente Boulevard, Suite 901, Los Angeles, CA 90048, USA.
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Han J, Ha CM, Yuh WT, Ko YS, Kim JH, Kim TS, Lee CH, Lee S, Lee SH, Khan A, Chung CK, Kim CH. Surgical treatment of spondylolisthesis by oblique lumbar interbody fusion and transpedicular screw fixation: Comparison between conventional double position versus navigation-assisted single lateral position. PLoS One 2023; 18:e0291114. [PMID: 37708151 PMCID: PMC10501584 DOI: 10.1371/journal.pone.0291114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 08/22/2023] [Indexed: 09/16/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Oblique lumbar interbody fusion (OLIF) procedures involve anterior insertion of interbody cage in lateral position. Following OLIF, insertion of pedicle screws and rod system is performed in a prone position (OLIF-con). The location of the cage is important for restoration of lumbar lordosis and indirect decompression. However, inserting the cage at the desired location is difficult without reduction of spondylolisthesis, and reduction after insertion of interbody cage may limit the amount of reduction. Recent introduction of spinal navigation enabled both surgical procedures in one lateral position (OLIF-one). Therefore, reduction of spondylolisthesis can be performed prior to insertion of interbody cage. The objective of this study was to compare the reduction of spondylolisthesis and the placement of cage between OLIF-one and OLIF-con. METHODS We retrospectively reviewed 72 consecutive patients with spondylolisthesis for this study; 30 patients underwent OLIF-one and 42 underwent OLIF-con. Spinal navigation system was used for OLIF-one. In OLIF-one, the interbody cage was inserted after reducing spondylolisthesis, whereas in OLIF-con, the cage was inserted before reduction. The following parameters were measured on X-rays: pre- and postoperative spondylolisthesis slippage, reduction degree, and the location of the cage in the disc space. RESULTS Both groups showed significant improvement in back and leg pains (p < .05). Transient motor or sensory changes occurred in three patients after OLIF-con and in two patients after OLIF-one. Pre- and postoperative slips were 26.3±7.7% and 6.6±6.2% in OLIF-one, and 23.1±7.0% and 7.4±5.8% in OLIF-con. The reduction of slippage was 74.4±6.3% after OLIF-one and 65.4±5.7% after OLIF-con, with a significant difference between the two groups (p = .04). The cage was located at 34.2±8.9% after OLIF-one and at 42.8±10.3% after OLIF-con, with a significant difference between the two groups (p = .004). CONCLUSION Switching the sequence of surgical procedures with OLIF-one facilitated both the reduction of spondylolisthesis and the placement of the cage at the desired location.
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Affiliation(s)
- Junghoon Han
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Chang-Min Ha
- Department of Neurosurgery, Samsung Medical Center, Seoul, Republic of Korea
| | - Woon Tak Yuh
- Department of Neurosurgery, Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea
| | - Young San Ko
- Department of Neurosurgery, Keimyung University Dongsan Hospital, Daegu, Republic of Korea
| | - Jun-Hoe Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Tae-Shin Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Chang-Hyun Lee
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sungjoon Lee
- Department of Neurosurgery, Samsung Medical Center, Seoul, Republic of Korea
- Department of Neurosurgery, Sungkyunkwan University School of Medicine, Suwon-si, Gyeonggi-do, Republic of Korea
| | - Sun-Ho Lee
- Department of Neurosurgery, Samsung Medical Center, Seoul, Republic of Korea
- Department of Neurosurgery, Sungkyunkwan University School of Medicine, Suwon-si, Gyeonggi-do, Republic of Korea
| | - Asfandyar Khan
- School of Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Chun Kee Chung
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, Republic of Korea
| | - Chi Heon Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Medical Device Development, Seoul National University College of Medicine, Seoul, Republic of Korea
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Lee DH, Lee DG, Park CK, Jang JW, Hwang JS, Kim JY, Cho YE, Lee SW, Lee DC, Han BS, Han SY. Saving Stabilizing Structure Treatment With Bilateral-Contralateral Decompression for Spinal Stenosis in Degenerative Spondylolisthesis Using Unilateral Biportal Endoscopy. Neurospine 2023; 20:931-939. [PMID: 37798987 PMCID: PMC10562235 DOI: 10.14245/ns.2346504.252] [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: 05/06/2023] [Revised: 06/15/2023] [Accepted: 06/19/2023] [Indexed: 10/07/2023] Open
Abstract
OBJECTIVE This study aimed to evaluate the treatment of spinal stenosis with spondylolisthesis using bilateral-contralateral unilateral biportal endoscopic (UBE) decompression to minimize facet joint damage. METHODS We retrospectively evaluated 42 patients with grade 1 spondylolisthesis who underwent bilateral-contralateral UBE decompression between July 2018 and September 2019. To identify segmental instability, static and dynamic images from preoperative and postoperative procedures and final follow-up radiographs were reviewed. Lateral radiograph slippage ratio, sagittal motion, and facet joint preservation were evaluated. Clinical assessments were conducted using the visual analogue scale (VAS), Oswestry Disability Index (ODI), and modified MacNab criteria. RESULTS The average final follow-up period was 26.5 ± 1.3 months. The average preoperative slip percentage was 15.70% ± 5.25%, which worsened to 18.80% ± 5.41% at the final follow-up (p < 0.005). The facet joint preservation rate was 95.6% ± 4.1% on the contralateral side. Improvements in the VAS scores (leg pain: from 7.9 ± 2.2 to 3.1 ± 0.7; p < 0.005; back pain: from 7.2 ± 3.0 to 2.8 ± 1.0; p < 0.005) were observed at the final follow-up. The mean preoperative ODI was 26.19 ± 3.42, which improved to 9.6 ± 1.0 (p < 0.005). Thirteen patients exhibited delayed focal segmental instability following decompression. Despite the absence of symptoms or improvement with conservative treatment in the majority of patients with delayed instability, two patients required fusion surgery to address the instability. Additionally, 2 patients developed facet synovial cysts, while 2 experienced spinous process fractures. CONCLUSION Bilateral decompression with a contralateral UBE approach could be an effective and alternative treatment method to reduce instability in spinal stenosis with grade 1 spondylolisthesis.
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Affiliation(s)
- Dong Hyun Lee
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Dong-Geun Lee
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Choon Keun Park
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Jae-Won Jang
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Jin Sub Hwang
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Jun Yong Kim
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Yong-Eun Cho
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Sang Won Lee
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Dong Chan Lee
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Anyang, Korea
| | - Bang Sang Han
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Sang Yeop Han
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
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Lv H, Yang YS, Zhou JH, Guo Y, Chen H, Luo F, Xu JZ, Zhang ZR, Zhang ZH. Simultaneous Single-Position Lateral Lumbar Interbody Fusion Surgery and Unilateral Percutaneous Pedicle Screw Fixation for Spondylolisthesis. Neurospine 2023; 20:824-834. [PMID: 37798977 PMCID: PMC10562230 DOI: 10.14245/ns.2346378.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/31/2023] [Accepted: 06/10/2023] [Indexed: 10/07/2023] Open
Abstract
OBJECTIVE To evaluate the clinical and radiological efficacy of a combine of lateral single screw-rod and unilateral percutaneous pedicle screw fixation (LSUP) for lateral lumbar interbody fusion (LLIF) in the treatment of spondylolisthesis. METHODS Sixty-two consecutive patients with lumbar spondylolisthesis who underwent minimally invasive (MIS)-TLIF with bilateral pedicle screw (BPS) or LLIF-LSUP were retrospectively studied. Segmental lordosis angle (SLA), lumbar lordosis angle (LLA), disc height (DH), slipping percentage, the cross-sectional areas (CSA) of the thecal sac, screw placement accuracy, fusion rate and foraminal height (FH) were used to evaluate radiographic changes postoperatively. Visual analogue scale (VAS) and Oswestry Disability Index (ODI) were used to evaluate the clinical efficacy. RESULTS Patients who underwent LLIF-LSUP showed shorter operating time, less length of hospital stay and lower blood loss than MIS-TLIF. No statistical difference was found between the 2 groups in screw placement accuracy, overall complications, VAS, and ODI. Compared with MIS-TLIF-BPS, LLIF-LSUP had a significant improvement in sagittal parameters including DH, FH, LLA, and SLA. The CSA of MIS-TLIF-BPS was significantly increased than that of LLIF-LSUP. The fusion rate of LLIF-LSUP was significantly higher than that of MIS-TLIF-BPS at the follow-up of 3 months postoperatively, but there was no statistical difference between the 2 groups at the follow-up of 6 months, 9 months, and 12 months. CONCLUSION The overall clinical outcomes and complications of LLIF-LSUP were comparable to that of MIS-TLIF-BPS in this series. Compared with MIS-TLIF-BPS, LLIF-LSUP for lumbar spondylolisthesis represents a significantly shorter operating time, hospital stay and lower blood loss, and demonstrates better radiological outcomes to maintain lumbar lordosis, and reveal an overwhelming superiority in the early fusion rate.
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Affiliation(s)
- Hui Lv
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, Chongqing, China
| | - Yu Sheng Yang
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, Chongqing, China
| | - Jian Hong Zhou
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, Chongqing, China
| | - Yuan Guo
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, Chongqing, China
| | - Hui Chen
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, Chongqing, China
| | - Fei Luo
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, Chongqing, China
| | - Jian Zhong Xu
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, Chongqing, China
| | - Zhong Rong Zhang
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, Chongqing, China
| | - Ze Hua Zhang
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, Chongqing, China
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Wu PH, Lau ETC, Kim HS, Grasso G, Jang IT. Spinal Canal Remodeling and Indirect Decompression of Contralateral Foraminal Stenosis After Endoscopic Posterolateral Transforaminal Lumbar Interbody Fusion. Neurospine 2023; 20:99-109. [PMID: 37016858 PMCID: PMC10080438 DOI: 10.14245/ns.2346132.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 03/16/2023] [Indexed: 04/03/2023] Open
Abstract
Objective: There is a lack of literature on indirect decompression in uniportal endoscopic posterolateral transforaminal lumbar interbody fusion (EPTLIF). Our aim is to evaluate the dimensions of the spinal canal and contralateral foramen before and after EPTLIF.Methods: This is a retrospective study of patients who underwent EPTLIF in a tertiary spine centre over a 2-year period. The cross-sectional area of the spinal canal and the contralateral foramen at the level of fusion were measured on magnetic resonance imaging scan at 1-day postoperation and at the final follow-up. Patients were grouped according to the decompression performed as per the clinician’s judgement.Results: One hundred fifty-two levels of fusion were performed in 120 patients. There was a statistically significant clinical improvement in visual analogue scale and Oswestry Disability Index scores postoperation. The measurements of the spinal canal area were 106.0 mm<sup>2</sup>, 138.8 mm<sup>2</sup>, and 195.5 mm<sup>2</sup>; while contralateral foraminal area were 73.2 mm<sup>2</sup>, 104.4 mm<sup>2</sup>, and 120.7 mm<sup>2</sup> at preoperation, 1-day postoperation, and at the final follow-up, respectively (p < 0.001). For the subgroup analyses, spinal canal area measurements for the bilateral decompression cohort (n = 35) were 57.0 mm<sup>2</sup>, 123.9 mm<sup>2</sup>, and 191.8 mm<sup>2</sup>; for the ipsilateral decompression cohort (n = 42) were 89.3 mm<sup>2</sup>, 128.9 mm<sup>2</sup>, 183.3 mm<sup>2</sup>; and for the cohort without any decompression and only cage inserted (n = 75) were 138.3 mm<sup>2</sup>, 151.2 mm<sup>2</sup>, and 204.1 mm<sup>2</sup> (p < 0.001). Contralateral foraminal area measurements were 73.3 mm<sup>2</sup>, 106.4 mm<sup>2</sup> and 120.4 mm<sup>2</sup> in the bilateral decompression cohort; 69.5 mm<sup>2</sup>, 99.0 mm<sup>2</sup>, 116.9 mm<sup>2</sup> in the ipsilateral decompression cohort; and 75.1 mm<sup>2</sup>, 106.5 mm<sup>2</sup>, 122.9 mm<sup>2</sup> in the cohort without any decompression (p < 0.001).Conclusion: Indirect decompression of both the spinal canal and the contralateral foramen can be achieved via EPTLIF. Decompression on an asymptomatic contralateral side is not necessary.
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Affiliation(s)
- Pang Hung Wu
- National University Health System, Juronghealth Campus, Department of Orthopaedic Surgery, Singapore
| | - Eugene Tze-Chun Lau
- National University Health System, Juronghealth Campus, Department of Orthopaedic Surgery, Singapore
| | - Hyeun-Sung Kim
- Neurosurgical Clinic, Department of Biomedicine, Neurosciences and Advanced Diagnostics University for Palermo, Palermo, Italy
- Corresponding Author Hyeun-Sung Kim Department of Neurosurgery, Nanoori Hospital Gangnam, 731 Eonju-ro, Gangnam-gu, Seoul 06048, Korea ,
| | - Giovanni Grasso
- Neurosurgical Clinic, Department of Biomedicine, Neurosciences and Advanced Diagnostics University for Palermo, Palermo, Italy
| | - Il-Tae Jang
- Nanoori Gangnam Hospital, Spine Surgery, Seoul, Korea
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Pao JL. Biportal Endoscopic Transforaminal Lumbar Interbody Fusion Using Double Cages: Surgical Techniques and Treatment Outcomes. Neurospine 2023; 20:80-91. [PMID: 37016856 PMCID: PMC10080423 DOI: 10.14245/ns.2346036.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 03/03/2023] [Indexed: 04/03/2023] Open
Abstract
Objective: To describe the surgical techniques and the treatment outcomes of biportal endoscopic transforaminal lumbar interbody fusion (BETLIF) using double cages.Methods: This study included 89 patients with 114 fusion segments between July 2019 and May 2021. One pure polyetheretherketone (PEEK) cage and 1 composite titanium-PEEK cage were used for interbody fusion. Clinical outcomes measures included visual analogue scale (VAS) scores for lower back pain and leg pain, Oswestry Disability Index (ODI), and Japanese Orthopedic Association (JOA) scores. Computed tomography (CT) of the lumbar spine 1 year postoperatively was used to evaluate the Bridwell interbody fusion grades.Results: There were significant improvement in VAS for lower back pain from 5.2 ± 3.1 to 1.7 ± 2.1, VAS for leg pain from 6.3 ± 2.5 to 1.7 ± 2.0, ODI from 46.7 ± 17.0 to 12.7 ± 16.1, and JOA score from 15.6 ± 6.3 to 26.4 ± 3.2. The p-values were all < 0.001. The average hospital stay was 5.7 ± 1.1 days. The CT studies available for 60 fusion segments showed successful fusion (Bridwell grade I or grade II) in 56 segments (93.3%). Significant cage subsidence of more than 2 mm was only noted in 3 segments (5.0%). Complications included 1 dural tear, 2 pedicle screws malposition, and 2 epidural hematomas, in which 2 patients required reoperations.Conclusion: BETLIF with double cages provided good neural decompression and a sound environment for interbody fusion with a big cage footprint, a large amount of bone graft, endplate preservation, and segmental stability.
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Affiliation(s)
- Jwo-Luen Pao
- Department of Orthopedic Surgery, Far-Eastern Memorial Hospital, New Taipei City, Taiwan
- Longhwa University of Science and Technology, Taoyuan, Taiwan
- Corresponding Author Jwo-Luen Pao Department of Orthopedic Surgery, Far-Eastern Memorial Hospital, 21, Section 2, Nanya South Road, Banqiao District, New Taipei 22060, Taiwan
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Bhujel B, Yang SS, Kim HR, Kim SB, Min BH, Choi BH, Han I. An Injectable Engineered Cartilage Gel Improves Intervertebral Disc Repair in a Rat Nucleotomy Model. Int J Mol Sci 2023; 24:3146. [PMID: 36834559 PMCID: PMC9966384 DOI: 10.3390/ijms24043146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/19/2023] [Accepted: 02/03/2023] [Indexed: 02/09/2023] Open
Abstract
Lower back pain is a major problem caused by intervertebral disc degeneration. A common surgical procedure is lumbar partial discectomy (excision of the herniated disc causing nerve root compression), which results in further disc degeneration, severe lower back pain, and disability after discectomy. Thus, the development of disc regenerative therapies for patients who require lumbar partial discectomy is crucial. Here, we investigated the effectiveness of an engineered cartilage gel utilizing human fetal cartilage-derived progenitor cells (hFCPCs) on intervertebral disc repair in a rat tail nucleotomy model. Eight-week-old female Sprague-Dawley rats were randomized into three groups to undergo intradiscal injection of (1) cartilage gel, (2) hFCPCs, or (3) decellularized extracellular matrix (ECM) (n = 10/each group). The treatment materials were injected immediately after nucleotomy of the coccygeal discs. The coccygeal discs were removed six weeks after implantation for radiologic and histological analysis. Implantation of the cartilage gel promoted degenerative disc repair compared to hFCPCs or hFCPC-derived ECM by increasing the cellularity and matrix integrity, promoting reconstruction of nucleus pulposus, restoring disc hydration, and downregulating inflammatory cytokines and pain. Our results demonstrate that cartilage gel has higher therapeutic potential than its cellular or ECM component alone, and support further translation to large animal models and human subjects.
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Affiliation(s)
- Basanta Bhujel
- Department of Biomedical Science, College of Life Sciences, CHA University, Seongnam 13496, Republic of Korea
| | | | | | - Sung Bum Kim
- Department of Neurosurgery, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Byoung-Hyun Min
- ATEMs Inc., Seoul 02447, Republic of Korea
- Wake Forest Institute of Regenerative Medicine, School of Medicine, Wake Forest University, Winston Salem, NC 27101, USA
| | - Byung Hyune Choi
- ATEMs Inc., Seoul 02447, Republic of Korea
- Department of Biomedical Sciences, Inha University College of Medicine, Incheon 22212, Republic of Korea
| | - Inbo Han
- Department of Neurosurgery, CHA Bundang Medical Center, School of Medicine, CHA University, Seongnam 13496, Republic of Korea
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