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B. Kopjar · SciRah

Researcher profile · Semantic Scholar

B. Kopjar

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B. Kopjar — researcher profile on SciRah

h-index: 43
Works: 239
Citations: 6,972

Most-cited papers

The modified Japanese Orthopaedic Association scale: establishing criteria for mild, moderate and severe impairment in patients with degenerative cervical myelopathy
L. Tetreault, B. Kopjar, A. Nouri, P. Arnold +7 more
2016European spine journal331 citations
Semantic Scholar
A Global Perspective on the Outcomes of Surgical Decompression in Patients With Cervical Spondylotic Myelopathy: Results From the Prospective Multicenter AOSpine International Study on 479 Patients
M. Fehlings, A. Ibrahim, L. Tetreault, V. Albanese +17 more
2015Spine274 citations
Semantic Scholar
Survival and Clinical Outcomes in Surgically Treated Patients With Metastatic Epidural Spinal Cord Compression: Results of the Prospective Multicenter AOSpine Study.
M. Fehlings, A. Nater, L. Tetreault, B. Kopjar +12 more
2016Journal of Clinical Oncology209 citations Open access
Semantic Scholar
ProDisc-C Total Disc Replacement Versus Anterior Cervical Discectomy and Fusion for Single-Level Symptomatic Cervical Disc Disease: Seven-Year Follow-up of the Prospective Randomized U.S. Food and Drug Administration Investigational Device Exemption Study.
M. Janssen, J. Zigler, J. Spivak, R. Delamarter +2 more
2015Journal of Bone and Joint Surgery. American volume182 citations
Semantic Scholar
The Minimum Clinically Important Difference of the modified Japanese Orthopaedic Association Scale in Patients with Degenerative Cervical Myelopathy
L. Tetreault, A. Nouri, B. Kopjar, P. Côté +1 more
2015Spine169 citations Open access
Semantic Scholar
A Clinical Prediction Rule for Functional Outcomes in Patients Undergoing Surgery for Degenerative Cervical Myelopathy: Analysis of an International Prospective Multicenter Data Set of 757 Subjects.
L. Tetreault, B. Kopjar, P. Côté, P. Arnold +1 more
2015Journal of Bone and Joint Surgery. American volume140 citations
Semantic Scholar
Psychometric Properties of the Modified Japanese Orthopaedic Association Scale in Patients With Cervical Spondylotic Myelopathy
B. Kopjar, L. Tetreault, S. Kalsi-Ryan, M. Fehlings
2015Spine119 citations Open access
Semantic Scholar
Rationale, design and critical end points for the Riluzole in Acute Spinal Cord Injury Study (RISCIS): a randomized, double-blinded, placebo-controlled parallel multi-center trial
M. Fehlings, H. Nakashima, N. Nagoshi, D. Chow +2 more
2015Spinal Cord114 citations Open access
Semantic Scholar
A clinical prediction model to assess surgical outcome in patients with cervical spondylotic myelopathy: internal and external validations using the prospective multicenter AOSpine North American and international datasets of 743 patients.
L. Tetreault, P. Côté, B. Kopjar, P. Arnold +1 more
2014The spine journal113 citations
Semantic Scholar
Does age affect surgical outcomes in patients with degenerative cervical myelopathy? Results from the prospective multicenter AOSpine International study on 479 patients
H. Nakashima, L. Tetreault, N. Nagoshi, A. Nouri +7 more
2015Journal of Neurology Neurosurgery & Psychiatry110 citations Open access
Semantic Scholar
Laminectomy and fusion versus laminoplasty for the treatment of degenerative cervical myelopathy: results from the AOSpine North America and International prospective multicenter studies.
M. Fehlings, Carlo Santaguida, L. Tetreault, P. Arnold +6 more
2017The spine journal93 citations
Semantic Scholar
Predicting the minimum clinically important difference in patients undergoing surgery for the treatment of degenerative cervical myelopathy.
L. Tetreault, Jefferson R. Wilson, M. Kotter, A. Nouri +4 more
2016Neurosurgical Focus90 citations Open access
Semantic Scholar
Safety and Efficacy of Riluzole in Acute Spinal Cord Injury Study (RISCIS): A Multi-Center, Randomized, Placebo-Controlled, Double-Blinded Trial
M. Fehlings, A. Moghaddamjou, James S. Harrop, R. Stanford +19 more
2023Journal of Neurotrauma74 citations Open access
Semantic Scholar
Safety and efficacy of riluzole in patients undergoing decompressive surgery for degenerative cervical myelopathy (CSM-Protect): a multicentre, double-blind, placebo-controlled, randomised, phase 3 trial.
M. Fehlings, J. Badhiwala, Henry Ahn, H. F. Farhadi +18 more
2020Lancet Neurology74 citations
Semantic Scholar
Surgery for degenerative cervical myelopathy: a patient-centered quality of life and health economic evaluation.
C. Witiw, L. Tetreault, Fabrice Smieliauskas, B. Kopjar +2 more
2016The spine journal74 citations
Semantic Scholar
Efficacy of i-Factor Bone Graft versus Autograft in Anterior Cervical Discectomy and Fusion: Results of the Prospective, Randomized, Single-blinded Food and Drug Administration Investigational Device Exemption Study
P. Arnold, R. Sasso, M. Janssen, M. Fehlings +7 more
2016Spine73 citations
Semantic Scholar
Is Preoperative Duration of Symptoms a Significant Predictor of Functional Outcomes in Patients Undergoing Surgery for the Treatment of Degenerative Cervical Myelopathy?
L. Tetreault, Jefferson R. Wilson, M. Kotter, P. Côté +4 more
2018Neurosurgery56 citations
Semantic Scholar
i-Factor™ Bone Graft vs Autograft in Anterior Cervical Discectomy and Fusion: 2-Year Follow-up of the Randomized Single-Blinded Food and Drug Administration Investigational Device Exemption Study
P. Arnold, R. Sasso, M. Janssen, M. Fehlings +3 more
2018Neurosurgery49 citations
Semantic Scholar
Clinical and Surgical Predictors of Complications Following Surgery for the Treatment of Cervical Spondylotic Myelopathy: Results From the Multicenter, Prospective AOSpine International Study of 479 Patients.
L. Tetreault, Gamaliel Tan, B. Kopjar, P. Côté +4 more
2016Neurosurgery46 citations
Semantic Scholar
Predictive factors of survival in a surgical series of metastatic epidural spinal cord compression and complete external validation of 8 multivariate models of survival in a prospective North American multicenter study
A. Nater, L. Tetreault, B. Kopjar, P. Arnold +11 more
2018Cancer45 citations Open access
Semantic Scholar
Impact of Depression and Bipolar Disorders on Functional and Quality of Life Outcomes in Patients Undergoing Surgery for Degenerative Cervical Myelopathy: Analysis of a Combined Prospective Dataset
L. Tetreault, N. Nagoshi, H. Nakashima, Anoushka Singh +3 more
2017Spine41 citations
Semantic Scholar
Mild diabetes is not a contraindication for surgical decompression in cervical spondylotic myelopathy: results of the AOSpine North America multicenter prospective study (CSM).
P. Arnold, M. Fehlings, B. Kopjar, Sangwook T. Yoon +13 more
2014The spine journal41 citations
Semantic Scholar
Risk Factors for and Clinical Outcomes of Dysphagia After Anterior Cervical Surgery for Degenerative Cervical Myelopathy: Results from the AOSpine International and North America Studies
N. Nagoshi, L. Tetreault, H. Nakashima, P. Arnold +3 more
2017Journal of Bone and Joint Surgery. American volume37 citations
Semantic Scholar
Do Quantitative Magnetic Resonance Imaging Parameters Correlate With the Clinical Presentation and Functional Outcomes After Surgery in Cervical Spondylotic Myelopathy? A Prospective Multicenter Study
A. Karpova, R. Arun, S. Kalsi-Ryan, E. Massicotte +2 more
2014Spine35 citations
Semantic Scholar
Outcomes of Surgical Decompression in Patients with Very Severe Degenerative Cervical Myelopathy
B. Kopjar, Parker E. Bohm, J. H. Arnold, M. Fehlings +2 more
2018Spine29 citations Open access
Semantic Scholar
Effect of Bearing Surface on Survival of Cementless and Hybrid Total Hip Arthroplasty
E. Davis, J. Pagkalos, B. Kopjar
2020JB & JS open access28 citations Open access
Semantic Scholar
Psychometric properties of the 30-m walking test in patients with degenerative cervical myelopathy: results from two prospective multicenter cohort studies.
Parker E. Bohm, M. Fehlings, B. Kopjar, L. Tetreault +3 more
2017The spine journal26 citations
Semantic Scholar
Polyethylene manufacturing characteristics have a major effect on the risk of revision surgery in cementless and hybrid total hip arthroplasties.
E. Davis, J. Pagkalos, B. Kopjar
2020The Bone & Joint Journal25 citations Open access
Semantic Scholar
Midterm Performance of a Guided-Motion Bicruciate-Stabilized Total Knee System: Results From the International Study of Over 2000 Consecutive Primary Total Knee Arthroplasties.
A. Harris, B. Christen, J. Malcorps, C. O'Grady +7 more
2019Journal of Arthroplasty25 citations Open access
Semantic Scholar
Observational Study of Depression in Patients Undergoing Cervical Disc Arthroplasty: Evidence of a Correlation between Pain Relief and Resolution of Depression
Matthew F. Gornet, A. Copay, F. Schranck, B. Kopjar
2016The International Journal of Spine Surgery24 citations Open access
Semantic Scholar
Do Caucasians and East Asians have Different Outcomes Following Surgery for the Treatment of Degenerative Cervical Myelopathy?: Results From the Prospective Multicenter AOSpine International Study
N. Nagoshi, L. Tetreault, H. Nakashima, A. Nouri +5 more
2016Spine24 citations
Semantic Scholar
The Impact of Older Age on Functional Recovery and Quality of Life Outcomes after Surgical Decompression for Degenerative Cervical Myelopathy: Results from an Ambispective, Propensity-Matched Analysis from the CSM-NA and CSM-I International, Multi-Center Studies
Jamie R. F. Wilson, J. Badhiwala, F. Jiang, Jefferson R. Wilson +3 more
2019Journal of Clinical Medicine23 citations Open access
Semantic Scholar
Second-generation bi-cruciate stabilized total knee system has a lower reoperation and revision rate than its predecessor
B. Christen, B. Kopjar
2018Archives of Orthopaedic and Trauma Surgery21 citations Open access
Semantic Scholar
The Effect of Workers' Compensation Status on Outcomes of Cervical Disc Arthroplasty: A Prospective, Comparative, Observational Study.
Matthew F. Gornet, F. Schranck, A. Copay, B. Kopjar
2016Journal of Bone and Joint Surgery. American volume21 citations
Semantic Scholar
Six-Year Follow-up of a Randomized Controlled Trial of i-FACTOR Peptide-Enhanced Bone Graft Versus Local Autograft in Single-Level Anterior Cervical Discectomy and Fusion
P. Arnold, A. Vaccaro, R. Sasso, Benoît Goulet +4 more
2022Neurosurgery17 citations
Semantic Scholar
Quality of Life and Functional Outcomes after Surgical Decompression in Patients with Cervical Ossification of the Posterior Longitudinal Ligament: Results from the Prospective, Multicenter AOSpine International Study on 479 Patients
H. Nakashima, M. Fehlings, L. Tetreault, N. Nagoshi +2 more
201516 citations Open access
Semantic Scholar
Novel Method Using Baseline Normalization and Area Under the Curve to Evaluate Differences in Outcome Between Treatment Groups and Application to Patients With Cervical Spondylotic Myelopathy Undergoing Anterior Versus Posterior Surgery
Shian Liu, L. Tetreault, M. Fehlings, V. Challier +12 more
2015Spine15 citations
Semantic Scholar
Geographic variations in clinical presentation and outcomes of decompressive surgery in patients with symptomatic degenerative cervical myelopathy: analysis of a prospective, international multicenter cohort study of 757 patients.
M. Fehlings, B. Kopjar, A. Ibrahim, L. Tetreault +25 more
2017The spine journal14 citations
Semantic Scholar
Short-term safety and effectiveness of a second-generation motion-guided total knee system
A. Harris, T. Luo, Jason E. Lang, B. Kopjar
2018Arthroplasty Today13 citations Open access
Semantic Scholar
Efficacy and Safety of Riluzole in Acute Spinal Cord Injury: Rationale and Design of AOSpine Phase III Multicenter Double-Blinded Randomized Controlled Trial (RISCIS)
M. Fehlings, B. Kopjar, R. Grossman, E. Bennett +4 more
201611 citations
Semantic Scholar
Clinical and Surgical Predictors of Complications following Surgery for the Treatment of Cervical Spondylotic Myelopathy: Results from the Multicenter, Prospective AOSpine International Study of 479 Patients
M. Fehlings, L. Tetreault, B. Kopjar, P. Côté +2 more
201511 citations
Semantic Scholar
Mid-term outcomes of the R3™ delta ceramic acetabular system in total hip arthroplasty
E. Davis, V. Remes, P. Virolainen, P. Gebuhr +3 more
2021Journal of Orthopaedic Surgery and Research9 citations Open access
Semantic Scholar
A higher degree of polyethylene irradiation is associated with a reduced risk of revision for aseptic loosening in total hip arthroplasties using cemented acetabular components
E. Davis, J. Pagkalos, B. Kopjar
2020Bone & Joint Research9 citations Open access
Semantic Scholar
Postoperative C5 Palsy after Anterior or Posterior Decompression for Degenerative Cervical Myelopathy
Alex B. Bak, A. Moghaddamjou, M. Alvi, Henry Ahn +20 more
2024Spine8 citations Open access
Semantic Scholar
Using an asymmetric crosslinked polyethylene liner in primary total hip arthroplasty is associated with a lower risk of revision surgery
E. Davis, J. Pagkalos, B. Kopjar
2021The Bone & Joint Journal8 citations Open access
Semantic Scholar
Two-Year Clinical and Radiological Outcomes in Patients With Diabetes Undergoing Single-Level Anterior Cervical Discectomy and Fusion
P. Arnold, A. Vaccaro, R. Sasso, Benoît Goulet +4 more
2020Global Spine Journal8 citations Open access
Semantic Scholar
162 Tobacco Smoking and Outcomes of Surgical Decompression in Patients With Symptomatic Degenerative Cervical Spondylotic Myelopathy.
P. Arnold, B. Kopjar, L. Tetreault, H. Nakashima +1 more
2016Neurosurgery7 citations
Semantic Scholar
Better Functional Recovery After Single-Level Compared With Two-Level Posterolateral Lumbar Fusion
S. Daffner, J. Bunch, D. Burton, R. Milam +5 more
2022Cureus3 citations Open access
Semantic Scholar
312 Risk Factors and Clinical Outcomes of Dysphagia After Anterior Cervical Surgery in Patients With Degenerative Cervical Myelopathy: Results From the AOSpine International and North America Studies.
L. Tetreault, N. Nagoshi, H. Nakashima, P. Arnold +3 more
2016Neurosurgery3 citations
Semantic Scholar
i-Factor™ Bone Graft versus Autograft in Anterior Cervical Discectomy and Fusion: Two-Year Follow-Up of the Randomized Single-Blinded Food and Drug Administration Investigational Device Exemption Study
P. Arnold, R. Sasso, M. Janssen, M. Fehlings +3 more
20163 citations
Semantic Scholar

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L. Tetreault×25
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A. Vaccaro×12
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