181. Sequential changes in lumbar lordosis and segmental stability following lateral interbody cage placement, Smith-Peterson Osteotomy, and anterior longitudinal ligament release

2019 ◽  
Vol 19 (9) ◽  
pp. S87-S88
Author(s):  
Richard Hurley ◽  
Amy Claeson ◽  
Jason A. Inzana ◽  
Anup Gandhi ◽  
Zachary Child
Keyword(s):  
Lumbar Lordosis ◽  
Anterior Longitudinal Ligament ◽  
Interbody Cage ◽  
Lateral Interbody

scholarly journals Outcomes of Oblique Lateral Interbody Fusion for Adult Spinal Deformity: A Systematic Review and Meta-Analysis

2021 ◽  
pp. 219256822097914
Author(s):  
Lei Zhu ◽  
Jun-Wu Wang ◽  
Liang Zhang ◽  
Xin-Min Feng
Keyword(s):  
Systematic Review ◽  
Lumbar Lordosis ◽  
Interbody Fusion ◽  
Perioperative Complications ◽  
Adult Spinal Deformity ◽  
Meta Analysis ◽  
Fusion Rate ◽  
The Mean ◽  
Oblique Lateral Interbody Fusion ◽  
Lateral Interbody

Study Design: A systematic review and meta-analysis. Objectives: To evaluate clinical and radiographic outcomes, and perioperative complications of oblique lateral interbody fusion (OLIF) for adult spinal deformity (ASD). Methods: We performed a systematic review and meta-analysis of related studies reporting outcomes of OLIF for ASD. The clinical outcomes were assessed by visual analogue scale (VAS) and Oswestry Disability Index (ODI). The radiographic parameters were evaluated by sagittal vertical axis (SVA), pelvic tilt (PT), sacral slope (SS), thoracic kyphosis (TK), lumbar lordosis (LL), pelvic incidence-lumbar lordosis (PI-LL), Cobb angle and fusion rate. A random effects model and 95% confidence intervals (CI) were performed to investigate the results. Results: A total of 16 studies involving 519 patients were included in the present study. The mean difference of VAS-back score, VAS-leg score and ODI score before and after surgery was 5.1, 5.0 and 32.3 respectively. The mean correction of LL was 20.6°, with an average of 6.9° per level and the mean correction of Cobb was 16.4°, with an average of 4.7° per level. The mean correction of SVA, PT, SS, TK and PI-LL was 59.3 mm, 11.7°, 6.9°, 9.4° and 20.6° respectively. The mean fusion rate was 94.1%. The incidence of intraoperative and postoperative complications was 4.9% and 29.6% respectively. Conclusions: OLIF is an effective and safe surgery method in the treatment of mild or moderate ASD and it has advantages in less intraoperative blood loss and lower perioperative complications.

Anterior Longitudinal Ligament Release From the Minimally Invasive Lateral Retroperitoneal Transpsoas Approach: Technical Note

2016 ◽  
Vol 12 (3) ◽  
pp. 214-221 ◽  
Author(s):  
Joshua M Beckman ◽  
Nicola Marengo ◽  
Gisela Murray ◽  
Konrad Bach ◽  
Juan S Uribe
Keyword(s):  
Blood Loss ◽  
Minimally Invasive ◽  
Lumbar Lordosis ◽  
Adult Spinal Deformity ◽  
Vascular Complications ◽  
Deformity Correction ◽  
Anterior Longitudinal Ligament ◽  
Global Improvement ◽  
Transpsoas Approach ◽  
Indirect Decompression

Abstract BACKGROUND The technique for minimally invasive anterior longitudinal ligament release is a major advancement in lateral access surgery. This method provides hypermobility of lumbar segments to allow for aggressive lordosis restoration while maintaining the benefits of indirect decompression and minimally invasive access. OBJECTIVE To provide video demonstration of the lateral retroperitoneal transpsoas approach with anterior longitudinal ligament sectioning. METHODS A detailed surgical technique of the minimally invasive anterior column release is described and illustrated in an elderly patient with adult spinal deformity and low back pain (visual analog scale, 8 of 10) refractory to conservative measures. The 3-foot standing radiographs demonstrated a lumbar lordosis of 54.4°, pelvic incidence of 63.7°, and pelvic tilt of 17.5°. Computed tomography and magnetic resonance imaging showed generalized lumbar spondylosis and degenerative disc changes from L2 to L5. RESULTS The patient underwent a multilevel minimally invasive deformity correction with an anterior longitudinal ligament release at the L3/L4 level through the lateral retroperitoneal transpsoas approach. Lumbar lordosis increased from 54.4° to 77° with a global improvement in sagittal vertical axis from 4.37 cm to 0 cm. Total blood loss was less than 25 mL, and there were no major neurological or vascular complications. CONCLUSION The anterior longitudinal ligament release using the minimally invasive lateral approach allows for deformity correction without the morbidity and blood loss encountered by traditional open posterior approaches. However, the risk of major vascular/visceral complication warrants only experts in minimally invasive lateral surgery to attempt this technique.

Comparative study of multilevel posterior interbody fusion plus anterior longitudinal ligament release versus classic multilevel posterior interbody fusion in the treatment of adult spinal deformities

2019 ◽  
Vol 31 (1) ◽  
pp. 46-52 ◽  
Author(s):  
Silviu Sabou ◽  
Apostolos Lagaras ◽  
Rajat Verma ◽  
Irfan Siddique ◽  
Saeed Mohammad
Keyword(s):  
Spinal Surgery ◽  
Lumbar Lordosis ◽  
Interbody Fusion ◽  
Posterior Lumbar Interbody Fusion ◽  
Minimal Risk ◽  
Lumbar Interbody Fusion ◽  
Anterior Longitudinal Ligament ◽  
Degenerative Scoliosis ◽  
Release Group ◽  
The Mean

OBJECTIVESagittal imbalance and loss of lumbar lordosis are the main drivers of functional disability in adult degenerative scoliosis. The main limitations of the classic posterior lumbar interbody fusion technique are increased risk of neurological injury and suboptimal correction of the segmental lordosis. Here, the authors describe the radiological results of a modified posterior lumbar interbody fusion and compare the results with a historical cohort of patients.METHODSEighty-two consecutive patients underwent surgical treatment for degenerative scoliosis/kyphosis in a single tertiary referral center for complex spinal surgery. Fifty-five patients were treated using the classic multilevel posterior lumbar interbody fusion (MPLIF) technique and 27 were treated using the modified MPLIF technique to include a release of the anterior longitudinal ligament (ALL) and the annulus. A radiographic review of both series of patients was performed by two independent observers. Functional outcomes were obtained, and patients were registered in the European Spine Tango registry.RESULTSThe mean L4–5 disc angle increased by 3.14° in the classic MPLIF group and by 12.83° in MPLIF plus ALL and annulus release group. The mean lumbar lordosis increased by 15.23° in the first group and by 25.17° in the second group. The L4–S1 lordosis increased on average by 4.92° in the classic MPLIF group and increased by a mean of 23.7° in the MPLIF plus ALL release group when both L4–5 and L5–S1 segments were addressed. There were significant improvements in the Core Outcome Measures Index and EQ-5D score in both groups (p < 0.001). There were no vascular or neurological injuries observed in either group.CONCLUSIONSThe authors’ preliminary results suggest that more correction can be achieved at the disc level using posterior-based ALL and annulus release in conjunction with posterior lumbar interbody fusion. They demonstrate that ALL and annulus release can be performed safely using a posterior-only approach with minimal risk of vascular injury. However, the authors recommend that this approach should only be used by surgeons with considerable experience in anterior and posterior spinal surgery.

Biomechanical analysis of stand-alone lumbar interbody cages versus 360° constructs: an in vitro and finite element investigation

2021 ◽  
pp. 1-9
Keyword(s):  
Interbody Fusion ◽  
Posterior Instrumentation ◽  
Axial Rotation ◽  
Posterior Fixation ◽  
Interbody Cage ◽  
Lateral Bending ◽  
Flexion Extension ◽  
Lateral Interbody ◽  
Flexion And Extension

OBJECTIVE Low fusion rates and cage subsidence are limitations of lumbar fixation with stand-alone interbody cages. Various approaches to interbody cage placement exist, yet the need for supplemental posterior fixation is not clear from clinical studies. Therefore, as prospective clinical studies are lacking, a comparison of segmental kinematics, cage properties, and load sharing on vertebral endplates is needed. This laboratory investigation evaluates the mechanical stability and biomechanical properties of various interbody fixation techniques by performing cadaveric and finite element (FE) modeling studies. METHODS An in vitro experiment using 7 fresh-frozen human cadavers was designed to test intact spines with 1) stand-alone lateral interbody cage constructs (lateral interbody fusion, LIF) and 2) LIF supplemented with posterior pedicle screw-rod fixation (360° constructs). FE and kinematic data were used to validate a ligamentous FE model of the lumbopelvic spine. The validated model was then used to evaluate the stability of stand-alone LIF, transforaminal lumbar interbody fusion (TLIF), and anterior lumbar interbody fusion (ALIF) cages with and without supplemental posterior fixation at the L4–5 level. The FE models of intact and instrumented cases were subjected to a 400-N compressive preload followed by an 8-Nm bending moment to simulate physiological flexion, extension, bending, and axial rotation. Segmental kinematics and load sharing at the inferior endplate were compared. RESULTS The FE kinematic predictions were consistent with cadaveric data. The range of motion (ROM) in LIF was significantly lower than intact spines for both stand-alone and 360° constructs. The calculated reduction in motion with respect to intact spines for stand-alone constructs ranged from 43% to 66% for TLIF, 67%–82% for LIF, and 69%–86% for ALIF in flexion, extension, lateral bending, and axial rotation. In flexion and extension, the maximum reduction in motion was 70% for ALIF versus 81% in LIF for stand-alone cases. When supplemented with posterior fixation, the corresponding reduction in ROM was 76%–87% for TLIF, 86%–91% for LIF, and 90%–92% for ALIF. The addition of posterior instrumentation resulted in a significant reduction in peak stress at the superior endplate of the inferior segment in all scenarios. CONCLUSIONS Stand-alone ALIF and LIF cages are most effective in providing stability in lateral bending and axial rotation and less so in flexion and extension. Supplemental posterior instrumentation improves stability for all interbody techniques. Comparative clinical data are needed to further define the indications for stand-alone cages in lumbar fusion surgery.

Anterior longitudinal ligament release using the minimally invasive lateral retroperitoneal transpsoas approach: a cadaveric feasibility study and report of 4 clinical cases

2012 ◽  
Vol 17 (6) ◽  
pp. 530-539 ◽  
Author(s):  
Armen R. Deukmedjian ◽  
Tien V. Le ◽  
Ali A. Baaj ◽  
Elias Dakwar ◽  
Donald A. Smith ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Lumbar Lordosis ◽  
Lumbar Disc ◽  
Vena Cava ◽  
Surgical Anatomy ◽  
Sagittal Imbalance ◽  
Anterior Longitudinal Ligament ◽  
Vertebral Column Resection ◽  
Transpsoas Approach ◽  
Clinical Cases

Object Traditional procedures for correction of sagittal imbalance via shortening of the posterior column include the Smith-Petersen osteotomy, pedicle subtraction osteotomy, and vertebral column resection. These procedures require wide exposure of the spinal column posteriorly, and may be associated with significant morbidity. Anterior longitudinal ligament (ALL) release using the minimally invasive lateral retroperitoneal approach with a resultant net lengthening of the anterior column has been performed as an alternative to increase lordosis. The objective of this study was to demonstrate the feasibility and early clinical experience of ALL release through a minimally invasive lateral retroperitoneal transpsoas approach, as well as to describe its surgical anatomy in the lumbar spine. Methods Forty-eight lumbar levels were dissected in 12 fresh-frozen cadaveric specimens to study the anatomy of the ALL as well as its surrounding structures, and to determine the feasibility of the technique. The lumbar disc spaces and ALL were accessed via the lateral transpsoas approach and confirmed with fluoroscopy in each specimen. As an adjunct, 4 clinical cases of ALL release through the minimally invasive lateral retroperitoneal transpsoas approach were reviewed. Operative technique, results, complications, and early outcomes were assessed. Results In the cadaveric study, sectioning of the ALL proved to be feasible from the minimally invasive lateral retroperitoneal transpsoas approach. The structures at most immediate risk during this procedure were the aorta, inferior vena cava, iliac vessels, and sympathetic plexus. The mean increase in segmental lumbar lordosis per level of ALL release was 10.2°, while global lumbar lordosis improved by 25°. Each level of ALL release took 56 minutes and produced 40 ml of blood loss on average. Visual analog scale and Oswestry Disability Index scores improved by 9 and 35 points, respectively. There were no cases of hardware failure, and as of yet no complications to report. Conclusions This initial experience suggests that ALL release through the minimally invasive lateral retroperitoneal transpsoas approach may be feasible, allows for improvement of lumbar lordosis without the need of an open laparotomy/thoracotomy, and minimizes the tissue disruption and morbidity associated with posterior osteotomies.

Radiographic and clinical evaluation of cage subsidence after stand-alone lateral interbody fusion

2013 ◽  
Vol 19 (1) ◽  
pp. 110-118 ◽  
Author(s):  
Luis Marchi ◽  
Nitamar Abdala ◽  
Leonardo Oliveira ◽  
Rodrigo Amaral ◽  
Etevaldo Coutinho ◽  
...  
Keyword(s):  
Lumbar Lordosis ◽  
Interbody Fusion ◽  
Disc Height ◽  
Standard Group ◽  
Lateral Interbody Fusion ◽  
Cage Subsidence ◽  
Grade Ii ◽  
Wide Group ◽  
Lateral Interbody

Object Indirect decompression of the neural structures through interbody distraction and fusion in the lumbar spine is feasible, but cage subsidence may limit maintenance of the initial decompression. The influence of interbody cage size on subsidence and symptoms in minimally invasive lateral interbody fusion is heretofore unreported. The authors report the rate of cage subsidence after lateral interbody fusion, examine the clinical effects, and present a subsidence classification scale. Methods The study was performed as an institutional review board–approved prospective, nonrandomized, comparative, single-center radiographic and clinical evaluation. Stand-alone short-segment (1- or 2-level) lateral lumbar interbody fusion was investigated with 12 months of postoperative follow-up. Two groups were compared. Forty-six patients underwent treatment at 61 lumbar levels with standard interbody cages (18 mm anterior/posterior dimension), and 28 patients underwent treatment at 37 lumbar levels with wide cages (22 mm). Standing lateral radiographs were used to measure segmental lumbar lordosis, disc height, and rate of subsidence. Subsidence was classified using the following scale: Grade 0, 0%–24% loss of postoperative disc height; Grade I, 25%–49%; Grade II, 50%–74%; and Grade III, 75%–100%. Fusion status was assessed on CT scanning, and pain and disability were assessed using the visual analog scale and Oswestry Disability Index. Complications and reoperations were recorded. Results Pain and disability improved similarly in both groups. While significant gains in segmental lumbar lordosis and disc height were observed overall, the standard group experienced less improvement due to the higher rate of interbody graft subsidence. A difference in the rate of subsidence between the groups was evident at 6 weeks (p = 0.027), 3 months (p = 0.042), and 12 months (p = 0.047). At 12 months, 70% in the standard group and 89% in the wide group had Grade 0 or I subsidence, and 30% in the standard group and 11% in wide group had Grade II or III subsidence. Subsidence was detected early (6 weeks), at which point it was correlated with transient clinical worsening, although progression of subsidence was not observed after the 6-week time point. Moreover, subsidence occurred predominantly (68%) in the inferior endplate. Fusion rate was not affected by cage dimension (p > 0.999) or by incidence of subsidence (p = 0.383). Conclusions Wider cages avoid subsidence and better restore segmental lordosis in stand-alone lateral interbody fusion. Cage subsidence is identified early in follow-up and can be accessed using the proposed classification scale.

scholarly journals Using aneurysm clips for repair of cisterna chyli injury during posterior spinal fusion

2021 ◽  
Vol 12 ◽  
pp. 428
Author(s):  
Robert McCabe ◽  
Doris Tong ◽  
Connor Hanson ◽  
Dejan Slavnic ◽  
Teck Mun Soo
Keyword(s):  
Surgical Complication ◽  
Lymphatic Vessels ◽  
Posterior Spinal Fusion ◽  
Cord Compression ◽  
Anterior Longitudinal Ligament ◽  
Interbody Cage ◽  
Pelvic Fixation ◽  
Cisterna Chyli

Background: Injury to the cisterna chyli (CC) is a rare surgical complication with a lack of literature describing its repair. Aneurysm clips have been successfully used to repair durotomies. Its usage in lymphatic injury has never been described. We sought to demonstrate the use of aneurysm clips for the repair of lymphatic vessels. Case Description: A 60-year-old male retired physician with Parkinson’s disease underwent a lumbosacral instrumented fusion with pelvic fixation (L1-pelvis) in 2011. He returned 5 months postoperatively after a fall and was ambulatory with a cane upon admission. CT demonstrated worsening kyphosis with pedicular and superior endplate fracture at the fusion apex. MRI revealed spinal cord compression at the failed level. Extension thoracolumbar fusion was performed (T3-L1) with intraoperative violation of the anterior longitudinal ligament (ALL) during T12/L1 discectomy. CC laceration was suspected. The ALL was dissected from the CC and aorta, allowing visualization of the injury. Three curved aneurysm clips were applied to the lacerated CC, which was visually inspected to ensure a patent lumen. The disk space was filled with poly-methyl-methacrylate cement in place of an interbody cage, preventing migration of the clips. The patient underwent rehabilitation in an inpatient facility with improved ambulation. He has had regular clinic follow-up and was last seen in 2020 with no evidence of lymphedema noted. Conclusion: CC injury is rare, and usage of aneurysm clips in its repair has never been described. We demonstrate the safe use of aneurysm clips to repair CC injury with long-term favorable clinical outcomes.

scholarly journals Segmental Artery Injury During Anterior Column Realignment: A Case Report and Review of the Literature

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Elliot Pressman ◽  
Ryan Screven ◽  
Brooks Osburn ◽  
Sara Hartnett ◽  
Puya Alikhani
Keyword(s):  
Lumbar Lordosis ◽  
Endovascular Embolization ◽  
Anterior Column ◽  
Invasive Technique ◽  
Anterior Longitudinal Ligament ◽  
Review Of The Literature ◽  
Segmental Artery ◽  
Artery Injury ◽  
Vessel Injury ◽  
Great Vessels

Background: Anterior column realignment (ACR) is a minimally invasive technique used to restore lumbar lordosis and improve sagittal balance. The most feared complication from ACR includes injury to the great vessels. Segmental artery injuries are also a possible complication though sparsely reported. We report such a case. Case Description: During anterior longitudinal ligament release at L3-4, the L3 segmental artery was injured. Intraoperative angiogram and coiling was performed. Our patient remained hemodynamically stable though during the postoperative period his hemoglobin fell five points. Discussion: This patient was at risk for this complication due to the tortuosity of his vessels and his osteophytes. This injury can be treated concurrently with endovascular embolization if equipment and personnel are readily available. Ultimately, segmental artery injury does not appear to be as morbid as great vessel injury if addressed emergently.

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