Publications by authors named "Keith R MacGregor"

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Influence of Preoperative Physical Function Scores on Outcomes After Single-level Cervical Disc Replacement.
Timothy J Hartman, James W Nie, Eileen Zheng, Keith R MacGregor, Omolabake O Oyetayo

Clin Spine Surg· August 2025

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Impact of Early Depressive Burden on Patient-Reported Outcomes Following Minimally Invasive Transforaminal Lumbar Interbody Fusion.
Jacob C Wolf, Fatima N Anwar, Andrea M Roca, Alexandra C Loya, Srinath S Medakkar, Keith R MacGregor

Clin Spine Surg· March 2025

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Worse Pain and Disability at Presentation Predicts Greater Improvement in Pain, Disability, and Mental Health in Patients Undergoing Minimally Invasive Transforaminal Lumbar Interbody Fusion for Degenerative Spondylolisthesis.
Fatima N Anwar, Andrea M Roca, Timothy J Hartman, James W Nie, Srinath S Medakkar, Keith R MacGregor

Clin Spine Surg· February 2025

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Impact of Preoperative Symptom Duration on Patient-reported Outcomes After Minimally Invasive Transforaminal Interbody Fusion for Degenerative Spondylolisthesis.
Timothy J Hartman, James W Nie, Fatima N Anwar, Andrea M Roca, Alexandra C Loya, Keith R MacGregor

Clin Spine Surg· July 2024

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Obesity Does Not Negatively Affect Patient-perceived Outcomes After Cervical Disc Replacement for Disc Herniation.
Fatima N Anwar, Andrea M Roca, Alexandra C Loya, Srinath S Medakkar, Timothy J Hartman, Keith R MacGregor

Clin Spine Surg· July 2024

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Prognostic value in preoperative Veterans RAND-12 mental Component score on clinical outcomes for patients undergoing minimally invasive transforaminal lumbar interbody fusion.
Andrea M Roca, Fatima N Anwar, James W Nie, Timothy J Hartman, Srinath S Medakkar, Keith R MacGregor

J Clin Neurosci· July 2024

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Does Preoperative Back Pain Impact Patient-reported Outcomes in Patients Undergoing Minimally Invasive Transforaminal Lumbar Interbody Fusion for Isthmic Spondylolisthesis?
James W Nie, Timothy J Hartman, Eileen Zheng, Omolabake O Oyetayo, Keith R MacGregor

Clin Spine Surg· June 2024

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Cervical Disk Replacement Versus Anterior Cervical Diskectomy and Fusion: Effect of Procedural Variant on Patients With a Prolonged Preoperative Duration of Symptoms From Disk Herniation.
Timothy J Hartman, James W Nie, Ishan Khosla, Omolabake O Oyetayo, Keith R MacGregor

J Am Acad Orthop Surg· June 2024

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The influence of preoperative Veterans RAND-12 physical composite score in patients undergoing anterior lumbar interbody fusion [Retrospective Review].
Fatima N Anwar, Andrea M Roca, Alexandra C Loya, Srinath S Medakkar, James W Nie, Keith R MacGregor

J Clin Neurosci· May 2024

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Effect of Baseline Veterans RAND-12 Mental Composite Score on Postoperative Patient-Reported Outcome Measures for Cervical Disk Replacement.
James W Nie, Timothy J Hartman, Omolabake O Oyetayo, Eileen Zheng, Keith R MacGregor

Clin Spine Surg· April 2024

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The Surgical Learning Curve for Cervical Disk Replacement.
Vincent P Federico, James W Nie, Timothy J Hartman, Omolabake O Oyetayo, Eileen Zheng, Keith R MacGregor

Clin Spine Surg· March 2024

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Prognostic Value in Preoperative Veterans RAND-12 Mental Component Score on Clinical Outcomes for Patients Undergoing Minimally Invasive Lateral Lumbar Interbody Fusion.
Ishan Khosla, Fatima N Anwar, Andrea M Roca, Srinath S Medakkar, Alexandra C Loya, Keith R MacGregor

Neurospine· March 2024

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Coronavirus Disease 2019 Shutdown Did Not Affect Mental Health Scores in Lumbar Decompression Patients in a Large Metropolitan Region.
Timothy J Hartman, James W Nie, Keith R MacGregor, Omolabake O Oyetayo, Eileen Zheng

Clin Spine Surg· December 2023

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The Current Status of Awake Endoscopic Surgery: A Systematic Review and Meta-Analysis.
Caroline N Jadczak, Nisheka N Vanjani, Hanna Pawlowski, Elliot D K Cha, Conor P Lynch, Keith R MacGregor

World Neurosurg· December 2023

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Effect of baseline veterans RAND-12 physical composite score on postoperative patient-reported outcome measures following lateral lumbar interbody fusion.
Omolabake O Oyetayo, James W Nie, Timothy J Hartman, Keith R MacGregor, Eileen Zheng

Acta Neurochir (Wien)· November 2023

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Poor patient-reported mental health correlates with inferior patient-reported outcome measures following cervical disc replacement.
Keith R MacGregor, Timothy J Hartman, James W Nie, Eileen Zheng, Omolabake O Oyetayo

Acta Neurochir (Wien)· November 2023

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Preoperative predictors of prolonged hospitalization in patients undergoing lateral lumbar interbody fusion.
James W Nie, Timothy J Hartman, Keith R MacGregor, Omolabake O Oyetayo, Eileen Zheng

Acta Neurochir (Wien)· September 2023

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Correlation Between Mental Health and Patient-Reported Outcomes After Lateral Lumbar Interbody Fusion.
Timothy J Hartman, James W Nie, Eileen Zheng, Keith R MacGregor, Omolabake O Oyetayo

World Neurosurg· September 2023

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Time to achievement of minimum clinically important difference after lumbar decompression.
James W Nie, Vincent P Federico, Timothy J Hartman, Eileen Zheng, Omolabake O Oyetayo, Keith R MacGregor

Acta Neurochir (Wien)· September 2023

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Differences in Time to Achieve Minimum Clinically Important Difference Between Patients Undergoing Anterior Cervical Discectomy and Fusion and Cervical Disc Replacement.
Vincent P Federico, James W Nie, Timothy J Hartman, Eileen Zheng, Omolabake O Oyetayo, Keith R MacGregor

World Neurosurg· August 2023

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Poor mental health scores correlate with inferior outcomes following minimally invasive transforaminal lumbar interbody fusion.
Timothy J Hartman, James W Nie, Eileen Zheng, Omolabake O Oyetayo, Keith R MacGregor

Acta Neurochir (Wien)· July 2023

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Perioperative Predictors in Patients Undergoing Lateral Lumbar Interbody Fusion for Minimum Clinically Important Difference Achievement.
James W Nie, Timothy J Hartman, Omolabake O Oyetayo, Keith R MacGregor, Eileen Zheng

World Neurosurg· July 2023

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Depressed patients with greater symptom duration before MIS-TLIF do not report inferior outcomes.
Timothy J Hartman, James W Nie, Eileen Zheng, Keith R MacGregor, Omolabake O Oyetayo

Acta Neurochir (Wien)· July 2023

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Understanding the Impact of Early Depressive Burden on Patient Perceptions of Outcomes Following Cervical Disc Replacement.
Timothy J Hartman, James W Nie, Omolabake O Oyetayo, Eileen Zheng, Keith R MacGregor

World Neurosurg· July 2023

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Postoperative clinical outcomes in patients undergoing MIS-TLIF versus LLIF for adjacent segment disease.
James W Nie, Timothy J Hartman, Eileen Zheng, Keith R MacGregor, Omolabake O Oyetayo

Acta Neurochir (Wien)· July 2023

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