Canadian Spine Society: 21st Annual Virtual Scientific Conference, Feb. 3, 10, 15, 17 and 24, 2021Abstract 45. Determining clinically important improvement following surgery for degenerative conditions of the spine: analysis of the Canadian Spine Outcomes and Research Network (CSORN) RegistryAbstract 31. Cost-utility analysis of microdiscectomy versus nonoperative management for the treatment of chronic radiculopathy secondary to lumbar disc herniationAbstract 44. Impact of undergoing thoracolumbar spine surgery on patient psychosocial healthAbstract 70. A comparison of functional and quality of life improvement in 6 different types of surgeryAbstract 54. The role of frailty and sarcopenia in predicting adverse events and mortality following en bloc resection of primary bone tumours and isolated metastases of the spineAbstract 27. Feasibility of achieving planned surgical margins in primary spine tumour: a PTRON studyAbstract 32. Care providers’ perspectives on potential expansion of medical assistance in dying criteria to persons with acute spinal cord injury: a qualitative studyAbstract 22. Does wait time for transfer from acute care to rehabilitation affect the outcomes following a traumatic spinal cord injury? A prospective cohort studyAbstract 86. Investigating and validating quantitative MRI biomarkers for demyelination, axon integrity and inflammation after traumatic spinal cord injuryAbstract 23. Does participating in a national spinal cord injury registry improve actual patient outcomes?Abstract 79. Can individuals expect normal quality of life following traumatic spinal cord injury? A cohort study compared with Canadian normative dataAbstract 79. Is the conversion of the American Spinal Injury Association Impairment Scale grade clinically meaningful for functional recovery in all patients with traumatic spinal cord injury?Abstract 101. Predicting massive intraoperative blood loss in adult spinal deformity surgeryAbstract 102. Use of preoperative opioids is a risk factor for persistent chronic postoperative opioid use in adult spinal deformity patientsAbstract 102. Comparison of a general (NSQIP) and spine specific (SAVES) database for the identification of spine surgery acute care adverse eventsAbstract 55. Trends in length of stay at a quaternary spinal care centre from 2006–2020Abstract 89. The impact of the COVID-19 pandemic on scheduled adult spine surgery in Toronto academic health sciences centres (AHSC): a wave 1 through early wave 2 experienceAbstract 60. Patient acceptance and satisfaction with virtual care in Ontario during and after COVID-19 lockdown restrictionsAbstract 39. Prospective randomized control study to evaluate the role of injection Cerebrolysin in operated cases of degenerative cervical myelopathyAbstract 47. Association between patient-reported outcomes and construct length in posterior cervical instrumentation for cervical spine myelopathyAbstract 52. Rate of revision surgery at adjacent and same segment for cervical disc replacement versus anterior cervical discectomy and fusionAbstract 104. Analysis of complication rates in cervical spine surgery between older patients and younger cohorts using the CSORN registry: Is age just a number?Abstract 49. Factors associated with increased length of stay in degenerative cervical spine surgery: cohort analysis from the Canadian Spine Outcomes and Research Network (CSORN)Abstract 51. Association between preoperative sagittal alignment and radiographic measures of decompression following cervical laminectomyAbstract 3. Analysis of the morphometric change in the uncinate process of cervical spondylosis patients: a study of radiologic anatomyAbstract 4. Does body mass index affect outcomes after vertebral body tethering surgery?Abstract 5. Congenital kyphosis: progressive correction with an instrumented posterior epiphysiodesisAbstract 6. The use of halo gravity traction in severe, stiff scoliosisAbstract 7. Fusing to the pelvis in the correction of scoliosis associated with Rett syndromeAbstract 8. Tuberculosis of the craniovertebral junction: its altered biomechanics and treatment strategyAbstract 9. Anatomic considerations and functional outcomes of endoscopic transiliac approach for access to L5–S1 disc and foramenAbstract 10. Five-year revision rates for elective multilevel lumbar instrumented fusions in the elderly: an analysis of state databasesAbstract 11. Lumbar PLIF without inpatient admission. Results of a standardized care protocol in over 100 selected patients treated over a 5-year periodAbstract 12. Frailty is an important predictor of 30-day morbidity in patients treated for lumbar spondylolisthesis using a posterior surgical approach: analysis of outcomes in 15 658 patients from the NSQIP databaseAbstract 13. Scoliosis flexibility correlates with postoperative outcomes following growth-friendly surgeryAbstract 14. Lumbar fusion surgery for patients with back pain and degenerative disc disease: an observational study from the Canadian Spine Outcomes and Research NetworkAbstract 15. Minimally invasive versus open thoracolumbar surgery for lumbar spinal stenosis in patients with diabetes: a CSORN studyAbstract 16. A successful triage system for low back painAbstract 17. Establishing normative relationship of spinopelvic alignment to femoroacetabular orientationAbstract 18. Clinical and radiographic outcomes of M6L disc arthroplasty at a single Canadian centreAbstract 24. Surgical intervention for patients with spinal metastasis from lung cancer: a retrospective study of 87 casesAbstract 26. Bridging the gap between symptom onset and diagnosis in axial spondyloarthritisAbstract 29. Postoperative recovery patterns following discectomy surgery for lumbar radiculopathyAbstract 30. Effect of posture on lumbopelvic muscle morphometry and geometry in adult spinal deformity patients from upright MRIAbstract 33. Clinical judgment is a cornerstone for validating and using clinical prediction rules: a head-to-head study on ambulation outcomes for spinal cord injured patientsAbstract 34. Sacroiliac joint pain after lumbar spine fusion for degenerative diseases: a systematic reviewAbstract 35. Posterior minimally invasive transpedicular approach for giant calcified thoracic disc herniationAbstract 36. A Canadian perspective on the effect of patient workload intensity on return to work after elective lumbar spine surgeryAbstract 37. Implant-related complications using uniaxial implants in pediatric spinal deformity surgeryAbstract 38. Increased upper thoracic curve vertebral rotation is associated with shoulder imbalance after posterior spinal fusion for adolescent idiopathic scoliosisAbstract 40. Biomechanical evaluation of a C1–C2 posterior arch screw constructAbstract 41. Accuracy of patient-specific drill guides for C1 and C2 laminar screw placementAbstract 42. Diagnosic and treatment criteria of craniocervical instability in Ehlers–Danlos syndrome: a systematic reviewAbstract 43. Paediatric health-related quality of life outcomes following surgery for adolescent idiopathic scoliosisAbstract 46. The standardization of postoperative analgesic prescriptions to reduce opioid use in outpatient spine surgical proceduresAbstract 50. A CSORN study: comparison between primary and revision lumbar decompression outcomesAbstract 53. Patient factors affecting hospital length of stay for adolescent idiopathic scoliosis patients undergoing posterior spinal instrumentation and fusion in a rapid recovery protocolAbstract 56. Comparison of factors associated with prolonged hospital length of stay for adolescent idiopathic patients undergoing posterior spinal instrumentation and fusion in Canada and the United StatesAbstract 58. The clinical course of symptoms during wait time for lumbar spinal stenosis surgery and its effect on postoperative outcome: a retrospective cohort studyAbstract 61. Lumbar shortening: a novel surgical technique for lumbosacral fusion following total sacrectomyAbstract 62. The use of minimally invasive navigation guided resection of spinal osteoid osteomas and osteoblastomasAbstract 63. Survival following revision en-bloc resection after intralesional index procedure for primary malignant spinal tumoursAbstract 64. Impact of COVID-19 on surgical outcomes: international multidisciplinary studyAbstract 65. Decompression versus decompression and fusion for “stable” degenerative spondylolisthesis: a randomized clinical trialAbstract 66. Factors associated with risk of persistent disabling back pain: results from an interprofessional low back pain programAbstract 67. Assessment of the impact of early manifestations of spasticity on long-term functional recovery following spinal cord injuryAbstract 68. Biomechanical comparison of subsidence between patient-specific and non-patient-specific PLIF cagesAbstract 69. Does the impaction of morcellized bone graft prevent interbody fusion device subsidence?Abstract 71. Quantitative imaging derived metrics of sarcopenia applied to prostrate cancerAbstract 72. Facilitated decompression in anterior cervical corpectomy and fusion (ACCF) and anterior cervical discectomy and fusion (ACDF) procedures using a new curved bone removal deviceAbstract 73. Spinal injury in mountain bikers: an updated British Columbia perspectiveAbstract 74. Improved efficacy and reduced hospital admission cost of TLIF procedures due to the use of a dedicated device for disc space preparationAbstract 75. Safe cervical tumour removal using a curved bone removal instrumentAbstract 77. International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI): use in acute careAbstract 78. MOBI (My Orthopedic Brace Inventory): a new, reliable and valid questionnaire to identify factors associated with poor adherence to brace treatment in AISAbstract 82. Development and validation of an objective version of the degenerative lumbar spondylolisthesis instability classification (DSIC) schemeAbstract 83. Exploring the ability of radiographic parameters of stenosis severity to predict patient recovery patternsAbstract 87. Is the incidence of PJF and PJK declining over time? A 10-year study of the Calgary Deformity DatabaseAbstract 88. Describing the spine surgical learning curve during the first 2 years of practiceAbstract 90. Factors contributing to prolonged length of stay in adults undergoing spine surgery: results from a quaternary spinal care centreAbstract 91. The impact of COVID-19 restrictions on idiopathic scoliosis referrals: beware of the anticipated tsunamiAbstract 92. Is vertebral body tethering truly minimally invasive? A comparison of early postoperative outcomes to posterior spinal instrumentation and fusionAbstract 93. A modified enhanced recovery after surgery (ERAS) protocol reduces length of stay and opioid consumption in adolescents after idiopathic scoliosis surgeryAbstract 94. Surgical outcomes of patients who fail to reach minimal clinically important differences: comparison of minimally invasive versus open transforaminal lumbar interbody fusionAbstract 97. Assessment of spinal fusion rates in multilevel surgeries using lateral interbody cages and rhBMP-2Abstract 100. Telehealth for outpatient spinal consultation: patient perspectives from the initial COVID-19 experienceAbstract 103. Transformation of radial stress to axial stress through morcellized bone graft for interbody applications Journal Articles