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Surgical Outcomes Research

Grading Apical Vertebral Rotation Without a Computed Tomography Scan: A Clinically Relevant System Based on the Radiographic Appearance of Bilateral Pedicle Screws

Upasani, Vidyadhar V. MD*; Chambers, Reid C. BA†; Dalal, Ali H. BS*; Shah, Suken A. MD‡; Lehman, Ronald A. Jr MD§; Newton, Peter O. MD*† Study Design. Bench-top and retrospective analysis to assess vertebral rotation based on the appearance of bilateral pedicle screws in patients with adolescent idiopathic scoliosis (AIS).…...

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Differences in Curve Behavior After Fusion in Adolescent Idiopathic Scoliosis Patients With Open Triradiate Cartilages

Sponseller, Paul D. MD*; Betz, Randal MD†; Newton, Peter O. MD‡; Lenke, Lawrence G. MD§; Lowe, Tom MD¶; Crawford, Alvin MD∥; Sucato, Daniel MD**; Lonner, Barry MD††; Marks, Michelle PT, MA‡; Bastrom, Tracey MA‡; The Harms Study Group Study Design. Retrospective review. Objective. To compare the results of spinal fusion…...

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Computed Tomography Evaluation of Rotation Correction in Adolescent Idiopathic Scoliosis: A Comparison of an All Pedicle Screw Construct Versus a Hook-Rod System

Asghar, Jahangir MD*; Samdani, Amer F. MD*; Pahys, Joshua M. MD*; D’Andrea, Linda P. MD†; Guille, James T. MD†; Clements, David H. MD‡; Betz, Randal R. MD*; The Harms Study Group Study Design. Retrospective review with historical cohort. Objective. Our study measures axial rotation of the apical vertebral bodies of…...

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The Use of Traction in the Treatment of Severe Spinal Deformity

Sponseller, Paul D. MD*; Takenaga, Ryan K. MA*; Newton, Peter MD†; Boachie, Oheneba MD‡; Flynn, Jack MD§; Letko, Lynn MD¶; Betz, Randal MD∥; Bridwell, Keith MD**; Gupta, Munish MD††; Marks, Michelle PT, MA†; Bastrom, Tracey MA† Study Design. Multicenter, retrospective, nonrandomized comparison group study of patients with severe scoliosis and…...

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Comparison of Compensatory Curve Spontaneous Derotation After Selective Thoracic or Lumbar Fusions in Adolescent Idiopathic Scoliosis

Ritzman, Todd F. MD*; Upasani, Vidyadhar V. MD†; Bastrom, Tracey P. MA‡; Betz, Randal R. MD§; Lonner, Baron S. MD¶; Newton, Peter O. MD†‡ Study Design. Retrospective review of a multicenter prospectively collected series of adolescent idiopathic scoliosis (AIS) patients. Objective. To compare uninstrumented compensatory curve spontaneous derotation of the…...

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Is the Lumbar Modifier Useful in Surgical Decision Making?: Defining Two Distinct Lenke 1A Curve Patterns

Miyanji, Firoz MD*; Pawelek, Jeff B. BS†; Van Valin, Scott E. MD‡; Upasani, Vidyadhar V. MD§; Newton, Peter O. MD†§ Study Design. Retrospective review of adolescent idiopathic scoliosis (AIS) patients. Objective. To investigate the clinical deformity and radiographic features of Lenke 1A and 1B curves to determine if the “A”…...

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Return of Shoulder Girdle Function After Anterior Versus Posterior Adolescent Idiopathic Scoliosis Surgery

Ritzman, Todd F. MD*; Upasani, Vidyadhar V. MD†; Pawelek, Jeff B. BS‡; Betz, Randal R. MD§; Newton, Peter O. MD†‡ Study Design. Multicenter, prospective, cohort study. Objective. To compare minimum 2-year postoperative shoulder function after 3 different surgical approaches for the treatment of primary thoracic curves in patients with adolescent…...

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Comparison Between 4.0-mm Stainless Steel and 4.75-mm Titanium Alloy Single-Rod Spinal Instrumentation for Anterior Thoracoscopic Scoliosis Surgery

Yoon, Seung Hwan MD, PhD*; Ugrinow, Valerie L. BA*; Upasani, Vidyadhar V. MD†; Pawelek, Jeff B. BS*; Newton, Peter O. MD*† Study Design. Retrospective review of a consecutive, single surgeon case series. Objective. To compare minimum 2-year postoperative outcomes between 4.0-mm stainless steel and 4.75-mm titanium alloy single-rod anterior thoracoscopic…...

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Spontaneous Lumbar Curve Correction in Selective Thoracic Fusions of Idiopathic Scoliosis: A Comparison of Anterior and Posterior Approaches

Patel, Prerana N. MD*; Upasani, Vidyadhar V. MD†; Bastrom, Tracey P. MA; Marks, Michelle C. PT, MA‡; Pawelek, Jeff B. BS‡; Betz, Randal R. MD§; Lenke, Lawrence G. MD¶; Newton, Peter O. MD†‡ Study Design. A retrospective evaluation of adolescent idiopathic scoliosis (AIS) patients treated with selective thoracic instrumentation and…...

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Spinal Growth Modulation With an Anterolateral Flexible Tether in an Immature Bovine Model: Disc Health and Motion Preservation

Newton, Peter O. MD*; Farnsworth, Christine L. MS*; Faro, Frances D. MD†; Mahar, Andrew T. MS*‡; Odell, Tim R. BS*; Mohamad, Fazir MD§; Breisch, Eric PhD*; Fricka, Kevin MD¶; Upasani, Vidyadhar V. MD‡; Amiel, David PhD‡ Study Design. An immature bovine model was used to evaluate multilevel anterolateral flexible tethering…...

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