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Research in Adolescent Idiopathic Scoliosis

Correlation of Scoliosis Curve Correction With the Number and Type of Fixation Anchors

Clements, David H. MD; Betz, Randal R. MD; Newton, Peter O. MD; Rohmiller, Michael MD; Marks, Michelle C. PT, MA; Bastrom, Tracey MA Study Design. Clinical and radiologic assessment derived from a prospective multicenter data base of adolescent idiopathic scoliosis (AIS) patients. Objective. We investigated if “implant density” or the…...

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Dissecting the Effects of Spinal Fusion and Deformity Magnitude on Quality of Life in Patients With Adolescent Idiopathic Scoliosis

Tsutsui, Shunji MD*; Pawelek, Jeff BS*; Bastrom, Tracey MA*; Lenke, Lawrence MD†; Lowe, Thomas MD‡; Betz, Randal MD§; Clements, David MD§; Newton, Peter O. MD* Study Design. A retrospective review of scores from the Scoliosis Research Society outcomes instrument (SRS-24 questionnaire). Objective. To quantify the isolated effects of spinal fusion…...

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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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The Deformity-Flexibility Quotient Predicts Both Patient Satisfaction and Surgeon Preference in the Treatment of Lenke 1B or 1C Curves for Adolescent Idiopathic Scoliosis

Newton, Peter O. MD*†; Upasani, Vidyadhar V. MD†; Bastrom, Tracey P. MA*; Marks, Michelle C. PT, MA* Study Design. Analysis of patient and surgeon preference between selective and nonselective thoracic spinal fusions. Objective. The purpose of this study was: (1) to determine patient preference between a longer, straighter fusion versus…...

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Which Lateral Radiographic Positioning Technique Provides the Most Reliable and Functional Representation of a Patient’s Sagittal Balance?

Marks, Michelle PT, MA*; Stanford, Chriss MA*; Newton, Peter MD*† Study Design. Prospective nonscoliotic cohort evaluation of the effects of various positions for obtaining standing lateral thoracolumbar radiographs. Objective. The purpose of this study was to compare the effects of various upper extremity positions on thoracolumbar sagittal spinal alignment. Summary…...

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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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