Nathan J. Lee
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View article: Ninety-Day Complication and Revision Surgery Rates Using Navigated Robotics in Thoracolumbar Spine Surgery: A PRoGRSS Interim Analysis
Ninety-Day Complication and Revision Surgery Rates Using Navigated Robotics in Thoracolumbar Spine Surgery: A PRoGRSS Interim Analysis Open
View article: Patient-Specific Rods in Adolescent and Adult Spinal Deformity Surgery: A Narrative Review
Patient-Specific Rods in Adolescent and Adult Spinal Deformity Surgery: A Narrative Review Open
Spinal deformity surgery often requires complex surgical interventions that can have a drastic effect on both patient quality of life and functional capacity. Modern-day corrective solutions for these deformities include spinal osteotomies…
View article: The Posterior Cranial Vertical Line: A Novel Radiographic Marker for Classifying Global Sagittal Alignment
The Posterior Cranial Vertical Line: A Novel Radiographic Marker for Classifying Global Sagittal Alignment Open
Objective: To define a novel radiographic measurement, the posterior cranial vertical line (PCVL), in an asymptomatic adult population to better understand global sagittal alignment.Methods: We performed a multicenter retrospective review …
Canadian Spine SocietyCPSS-1. Abstract ID 108. Radiographic reporting in adolescent idiopathic scoliosis: Is there a discrepancy between radiologists’ reports and surgeons’ assessments?CPSS-2. Abstract ID 21. Pediatric posterior spinal deformity correction: 30-day postoperative infection rate and risk factorsCPSS-3. Abstract ID 17. “Ultra-low dose” computed tomography without sedation is feasible and should be considered as part of the preoperative optimization pathway in paediatric patients with neuromuscular scoliosisCPSS-4. Abstract ID 20. SeeSpine: a novel surface topography smartphone application for monitoring curve progression in adolescent idiopathic scoliosisCPSS-5. Abstract ID 78. Pilot study: a machine learning algorithm for the detection of adolescent idiopathic scoliosis from images taken with modern smartphone technologyCPSS-6. Abstract ID 101. Preoperative parameters influencing vertebral body tethering outcomes: patient characteristics play an important role in determining the outcomes at 2 years after surgeryCPSS-7. Abstract ID 63. Preoperative bending radiographs are the best predictor of scoliosis correction on the first erect radiograph in vertebral body tethering: a single-centre retrospective studyCPSS-8. Abstract ID 18. Adverse events after zoledronate infusion in medically complex patients with neuromuscular scoliosisCPSS-9. Abstract ID 5. Sequential rod rolling for surgical correction of Lenke type 2 adolescent idiopathic scoliosis: a 3D analysisCPSS-10. Abstract ID 123. A comparative study of protocols for spinal casting as a surgical delay strategy in severe early-onset scoliosisA-11. Abstract ID 50. Does the type of pelvic fixation affect pelvic incidence after adult spinal deformity surgery? A retrospective analysisA-12. Abstract ID 51. How does pelvic fixation affect the compensatory mechanisms after adult spinal deformity surgery? A retrospective analysisA-13. Abstract ID 44. Development of a biomechanical model to identify risk factors in sagittal alignment contributing to proximal junctional kyphosisA-14. Abstract ID 32. Biomechanical characterization of semirigid constructs and the potential effect on proximal junctional kyphosisA-15. Abstract ID 65. Early adjacent disc characteristics are not associated with reoperation in short-segment lumbar fusionsA-16. Abstract ID 39. Concurrent validation of a novel inertial measurement unit–based method to evaluate spinal motion in clinical settingsA-17. Abstract ID 68. Distal lordosis is associated with reoperation for adjacent segment disease in patients with degenerative lumbar fusionA-18. Abstract ID 69. Automatic extraction of spinopelvic parameters using artificial intelligence methods and a review on the effects of spine stiffness, spinal fusion and spinopelvic parameters on lower limb motion and total hip arthroplasty outcomesA-19. Abstract ID 38. Gender differences in fusion rates in the treatment of degenerative lumbar spondylolisthesis: analysis from the CSORN prospective degenerative lumbar spondylolisthesis studyA-20. Abstract ID 29. L3–4 hyperlordosis after a reduction in lower lumbar lordosis with L4–L5 fusion surgery is common in patients requiring L3–4 revision surgery for adjacent segment diseaseB-21. Abstract ID 40. Predictors of dynamic instability in the decision to fuse in degenerative lumbar spondylolisthesis: results from the Canadian Spine Outcomes and Research Network prospective degenerative lumbar spondylolisthesisstudyB-22. Abstract ID 49. Impact of preoperative insomnia on poor postoperative pain control after elective spine surgery and the Modified Calgary Postoperative Pain After Spine Surgery scoreB-23. Abstract ID 115. Influence of high pelvic incidence on operative difficulty in patients treated surgically for degenerative lumbar spondylolisthesisB-24. Abstract ID 45. Reoperation rates for adjacent segment disease in degenerative lumbar fusion surgery: a comparison between minimally invasive versus open surgical approachesB-25. Abstract ID 118. Assessment of changes in opioid utilization 1 year after elective spine surgery: a Canadian Spine Outcomes and Research Network studyB-26. Abstract ID 93. Preoperative neuroleptic and opioid use effects on postoperative pain and disability after spinal surgery for lumbar radiculopathyB-27. Abstract ID 52. The importance of lower extremity compensation mechanisms in lumbar degenerative pathology: a retrospective analysisB-28. Abstract ID 107. Persistent poor sleep is associated with worse pain and quality of life in patients with degenerative thoracolumbar conditions undergoing surgery: a retrospective cohort studyB-29. Abstract ID 126. Opioid use in low back pain is associated with increased utilization of health care services and likelihood of work absenteeismB-30. Abstract ID 53. Wait times for degenerative lumbar spine consultation and surgery: a repeated cross-sectional analysis of the Canadian Spine Outcomes and Research NetworkC-31. Abstract ID 33. Pati Open
View article: Artificial Intelligence and Machine Learning Applications in Spine Surgery
Artificial Intelligence and Machine Learning Applications in Spine Surgery Open
The complexity of patients with spine pathology and high rates of complications has driven extensive research directed toward optimizing outcomes and reducing complications. Traditional statistical analysis has been limited both in validit…
View article: The Lumbosacral Fractional Curve vs Maximum Coronal Cobb Angle in Adult Spinal Deformity Patients with Coronal Malalignment: Which Matters More?
The Lumbosacral Fractional Curve vs Maximum Coronal Cobb Angle in Adult Spinal Deformity Patients with Coronal Malalignment: Which Matters More? Open
Study Design Retrospective cohort study. Objectives In patients undergoing adult spinal deformity (ASD) surgery we sought to: 1) report preoperative and postoperative lumbosacral fractional (LSF) curve and maximum coronal Cobb angles and 2…
View article: Living with a C2-Sacrum Spinal Fusion: Surgical Outcomes and Quality of Life in Patients Fused from C2 to the Sacrum
Living with a C2-Sacrum Spinal Fusion: Surgical Outcomes and Quality of Life in Patients Fused from C2 to the Sacrum Open
Study Design Single center, retrospective cohort study. Objectives Little is known about the surgical outcomes and quality of life in patients with C2-sacrum posterior spinal fusion (PSF). Though it is thought to be a “final” construct, it…
View article: What Radiographic and Clinical Factors Ultimately Necessitate a C2-Sacrum Instrumented Posterior Spinal Fusion?
What Radiographic and Clinical Factors Ultimately Necessitate a C2-Sacrum Instrumented Posterior Spinal Fusion? Open
Objective /Hypothesis: Patients undergoing C2-sacrum PSF have unique medical histories and multiple prior operations over an extended period. Design Single center, retrospective cohort Methods Consecutive C2-sacrum PSF patients operated on…
View article: Perioperative risk stratification of spine trauma patients with ankylosing spinal disorders: a comparison of 3 quantitative indices
Perioperative risk stratification of spine trauma patients with ankylosing spinal disorders: a comparison of 3 quantitative indices Open
OBJECTIVE Patients with ankylosing spinal disorders (ASDs), including ankylosing spondylitis (AS) and diffuse idiopathic skeletal hyperostosis (DISH), have been shown to experience significantly increased rates of postoperative complicatio…
View article: Operative Time Less Than 1.5 Hours, Male Sex, Dependent Functional Status, Presence of Dyspnea, and Reoperations Within 30 days Are Independent Risk Factors for Readmission After ACLR
Operative Time Less Than 1.5 Hours, Male Sex, Dependent Functional Status, Presence of Dyspnea, and Reoperations Within 30 days Are Independent Risk Factors for Readmission After ACLR Open
View article: Worse Preoperative Disability is Predictive of Improvement in Disability After Complex Adult Spinal Deformity Surgery
Worse Preoperative Disability is Predictive of Improvement in Disability After Complex Adult Spinal Deformity Surgery Open
Study Design Retrospective Cohort Study. Objectives Few previous studies have examined the relationship between preoperative disability and patient outcomes after complex adult spinal deformity surgery. In this study, we hypothesized that …
View article: Artificial Learning and Machine Learning Applications in Spine Surgery: A Systematic Review
Artificial Learning and Machine Learning Applications in Spine Surgery: A Systematic Review Open
Objectives This current systematic review sought to identify and evaluate all current research-based spine surgery applications of AI/ML in optimizing preoperative patient selection, as well as predicting and managing postoperative outcome…
View article: Can Natural Language Processing and Artificial Intelligence Automate The Generation of Billing Codes From Operative Note Dictations?
Can Natural Language Processing and Artificial Intelligence Automate The Generation of Billing Codes From Operative Note Dictations? Open
Study Design Retrospective Cohort Study. Objectives Using natural language processing (NLP) in combination with machine learning on standard operative notes may allow for efficient billing, maximization of collections, and minimization of …
View article: Response to Letter to the Editor on “Hybrid Anterior Cervical Discectomy and Fusion and Cervical Disc Arthroplasty: An Analysis of Short-Term Complications, Reoperations, and Readmissions”
Response to Letter to the Editor on “Hybrid Anterior Cervical Discectomy and Fusion and Cervical Disc Arthroplasty: An Analysis of Short-Term Complications, Reoperations, and Readmissions” Open
View article: A multicenter study of the 5-year trends in robot-assisted spine surgery outcomes and complications
A multicenter study of the 5-year trends in robot-assisted spine surgery outcomes and complications Open
At four institutions among seven surgeons, we demonstrate robot screw accuracy, reliability, operative efficiency, and radiation exposure improved significantly from 2015 to 2019. 90-day complication rates remained low and LOS decreased si…
View article: Clinical Trial Quality Assessment in Adult Spinal Surgery: What Do Publication Status, Funding Source, and Result Reporting Tell Us?
Clinical Trial Quality Assessment in Adult Spinal Surgery: What Do Publication Status, Funding Source, and Result Reporting Tell Us? Open
Study Design Narrative Review Objectives The objective of this study was to compare publication status of clinical trials in adult spine surgery registered on ClinicalTrials.gov by funding source as well as to identify other trends in clin…
View article: Be Prepared: Preoperative Coronal Malalignment Often Leads to More Extensive Surgery Than Sagittal Malalignment During Adult Spinal Deformity Surgery
Be Prepared: Preoperative Coronal Malalignment Often Leads to More Extensive Surgery Than Sagittal Malalignment During Adult Spinal Deformity Surgery Open
Objective: To evaluate the effect of coronal alignment on: (1) surgical invasiveness and operative complexity and (2) postoperative complications.Methods: A retrospective, cohort study of adult spinal deformity patients was conducted. Alig…
View article: Resident Involvement in Hip Arthroscopy Procedures Does Not Affect Short-Term Surgical Outcomes
Resident Involvement in Hip Arthroscopy Procedures Does Not Affect Short-Term Surgical Outcomes Open
Resident involvement in HA procedures was not a risk factor for 30-day complications between 2006 and 2012. Resident involvement did not increase the risk of adverse outcomes, readmission, reoperation, or length of stay, nor did it signifi…
View article: Comparing hyperlordotic and standard lordotic cages for achieving segmental lumbar lordosis during transforaminal lumbar interbody fusion in adult spinal deformity surgery
Comparing hyperlordotic and standard lordotic cages for achieving segmental lumbar lordosis during transforaminal lumbar interbody fusion in adult spinal deformity surgery Open
Although it is theorized that hyperlordotic cages would increase SLL during open TLIF procedures more than standard lordotic cages, our data failed to demonstrate that. As our study examined cases performed by a single surgeon immediately …
View article: The accuracy of robot-assisted S2 alar-iliac screw placement at two different healthcare centers
The accuracy of robot-assisted S2 alar-iliac screw placement at two different healthcare centers Open
Robot-assisted S2AI screw placement was found to be safe and accurate in this multicenter study. This is largely attributed to the versatility of the robotic guidance software that allows for detailed and precise preoperative and intraoper…
View article: Is There a Difference in Screw Accuracy, Robot Time Per Screw, Robot Abandonment, and Radiation Exposure Between the Mazor X and the Renaissance? A Propensity-Matched Analysis of 1179 Robot-Assisted Screws
Is There a Difference in Screw Accuracy, Robot Time Per Screw, Robot Abandonment, and Radiation Exposure Between the Mazor X and the Renaissance? A Propensity-Matched Analysis of 1179 Robot-Assisted Screws Open
Study Design: Prospective single-cohort analysis. Objectives: To compare the outcomes/complications of 2 robotic systems for spine surgery. Methods: Adult patients (≥18-years-old) who underwent robot-assisted spine surgery from 2016-2019 w…
View article: Do Adult Spinal Deformity Patients Undergoing Surgery Continue to Improve From 1-Year to 2-Years Postoperative?
Do Adult Spinal Deformity Patients Undergoing Surgery Continue to Improve From 1-Year to 2-Years Postoperative? Open
Objective: Evaluate clinical improvement as measured by patient-reported outcomes (PROs) during the 1 to 2-year interval. Study Design: Retrospective Cohort. Methods: A single-institution registry of ASD patients undergoing surgery was que…
View article: Do robot-related complications influence 1 year reoperations and other clinical outcomes after robot-assisted lumbar arthrodesis? A multicenter assessment of 320 patients
Do robot-related complications influence 1 year reoperations and other clinical outcomes after robot-assisted lumbar arthrodesis? A multicenter assessment of 320 patients Open
Background Robot-assisted platforms in spine surgery have rapidly developed into an attractive technology for both the surgeon and patient. Although current literature is promising, more clinical data is needed. The purpose of this paper i…
View article: Does robot-assisted spine surgery for multi-level lumbar fusion achieve better patient-reported outcomes than free-hand techniques?
Does robot-assisted spine surgery for multi-level lumbar fusion achieve better patient-reported outcomes than free-hand techniques? Open
View article: Revision Surgeries at the Index Level After Cervical Disc Arthroplasty – A Systematic Review
Revision Surgeries at the Index Level After Cervical Disc Arthroplasty – A Systematic Review Open
The long-term revision rate at the index level of failed CDA surgery was 3.9%, with a minimum 5-year follow-up. ACDF was the most commonly performed procedure to salvage a failed CDA. Some patients who required a new surgery after CDA fail…
View article: Circumferential Operations of the Cervical Spine
Circumferential Operations of the Cervical Spine Open
Generally, a combined anterior and posterior cervical approach is associated with significant morbidity since it requires an extended operative time, greater intraoperative blood loss, and both anterior- and posterior-related surgical comp…
View article: Clinical and patient-reported outcomes after robot-assisted short-segment lumbar fusion with a minimum 1-year follow-up
Clinical and patient-reported outcomes after robot-assisted short-segment lumbar fusion with a minimum 1-year follow-up Open
View article: Flexion-extension standing radiographs underestimate instability in patients with single-level lumbar spondylolisthesis: comparing flexion-supine imaging may be more appropriate
Flexion-extension standing radiographs underestimate instability in patients with single-level lumbar spondylolisthesis: comparing flexion-supine imaging may be more appropriate Open
Comparing standing lateral and flexion X-rays with supine MRIs provides higher sensitivity to assess instability than standard flexion-extension radiographs. The FS and NS comparisons also show greater slip percentage differences at higher…
View article: The role of ketamine in opioid-free spinal deformity surgery: is it possible and beneficial?
The role of ketamine in opioid-free spinal deformity surgery: is it possible and beneficial? Open
Though our study showed no significant change in postoperative opioid requirement in our population, our results show that integration of ketamine in these extensive operations fare similarly to traditional opioid-based regimens. There was…
View article: What Is the Impact of Surgical Approach in the Treatment of Degenerative Cervical Myelopathy in Patients With OPLL? A Propensity-Score Matched, Multi-Center Analysis on Inpatient and Post-Discharge 90-Day Outcomes
What Is the Impact of Surgical Approach in the Treatment of Degenerative Cervical Myelopathy in Patients With OPLL? A Propensity-Score Matched, Multi-Center Analysis on Inpatient and Post-Discharge 90-Day Outcomes Open
Study Design: Retrospective cohort. Objective: Provide a comparison of surgical approach in the treatment of degenerative cervical myelopathy in patients with OPLL. Methods: A national database was queried to identify adult (≥18 years) pat…