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Research in Adolescent Idiopathic Scoliosis

Lenke 1C and 5C Spinal Deformities Fused Selectively: 5-Year Outcomes of the Uninstrumented Compensatory Curves

Ilgenfritz, Ryan M. MD*; Yaszay, Burt MD†; Bastrom, Tracey P. MA†; Newton, Peter O. MD†; Harms Study Group Study Design. Multicenter review of prospectively collected data. Objective. To analyze the natural history of uninstrumented compensatory curves prospectively during a 5-year postoperative period in patients with selectively fused Lenke type 1C…...

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Surgical Treatment of Lenke 1 Main Thoracic Idiopathic Scoliosis: Results of a Prospective, Multicenter Study

Newton, Peter O. MD*; Marks, Michelle C. PT, MA*; Bastrom, Tracey P. MA*; Betz, Randal MD†; Clements, David MD‡; Lonner, Baron MD§; Crawford, Alvin MD¶; Shufflebarger, Harry MD‖; O’Brien, Michael MD; Yaszay, Burt MD*; Harms Study Group K. MD*; Yaszay, Burt MD†; Bastrom, Tracey P. MA†; Newton, Peter O. MD†;…...

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Adding Thoracic Fusion Levels in Lenke 5 Curves: Risks and Benefits

Lark, Robert K. MD*; Yaszay, Burt MD†; Bastrom, Tracey P. MA†; Newton, Peter O. MD†; Harms Study Group Study Design. Multicenter; review of prospectively collected data. Objective. To determine the risks and potential benefits of nonselective versus selective fusion in a matched set of patients with Lenke 5 curves. Summary…...

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Defining 2 Components of Shoulder Imbalance: Clavicle Tilt and Trapezial Prominence

Ono, Takashi MD*; Bastrom, Tracey P. MA†; Newton, Peter O. MD† Study Design. A single-center prospective case series. Objective. To examine 2 features of shoulder asymmetry (clavicle tilt and trapezial prominence) and their correlation with radiographical parameters. Summary of Background Data. Shoulder imbalance is one of the more notable aspects…...

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Postoperative Changes in Spinal Rod Contour in Adolescent Idiopathic Scoliosis: An In Vivo Deformation Study

Cidambi, Krishna R. MD*; Glaser, Diana A. PhD†,‡; Bastrom, Tracey P. MA†; Nunn, Thomas N. BS†,‡; Ono, Takashi MD†; Newton, Peter O. MD*,†,‡ Study Design. Prospective case series. Objective. To evaluate the change in spinal rod contour from before implantation to after surgical correction of thoracic curves in patients with…...

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A Method for Assessing Axial Vertebral Rotation Based on Differential Rod Curvature on the Lateral Radiograph

Liu, Raymond W. MD*; Yaszay, Burt MD†; Glaser, Diana PhD†,‡; Bastrom, Tracey P. MA†; Newton, Peter O. MD† Study Design. Bench-top and retrospective radiographical analyses to determine apical vertebral rotation based on differential rod curvature on the postoperative lateral radiograph. Objective. To develop a clinically relevant methodology for measuring apical…...

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Which Lenke 1A Curves Are at the Greatest Risk for Adding-On… and Why?

Cho, Robert H. MD*; Yaszay, Burt MD†; Bartley, Carrie E. MA†; Bastrom, Tracey P. MA†; Newton, Peter O. MD† Study Design. Multicenter review of prospectively collected data. Objective. The purpose of this study was to evaluate the incidence of distal adding-on and associated risk factors in each of the 2…...

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Multivariate Analysis of Factors Associated With Kyphosis Maintenance in Adolescent Idiopathic Scoliosis

Cho, Robert H. MD*; Yaszay, Burt MD†; Bartley, Carrie E. MA†; Bastrom, Tracey P. MA†; Newton, Peter O. MD† Study Design. Multicenter review of prospectively collected data. Objective. The purpose of this study was to evaluate the incidence of distal adding-on and associated risk factors in each of the 2…...

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Direct Vertebral Body Derotation, Thoracoplasty, or Both: Which Is Better With Respect to Inclinometer and Scoliosis Research Society-22 Scores?

Samdani, Amer F. MD; Hwang, Steven W. MD; Miyanji, Firoz MD; Lonner, Baron MD; Marks, Michelle C. MA, PT; Sponseller, Paul D. MD; Newton, Peter O. MD; Cahill, Patrick J. MD; Shufflebarger, Harry L. MD; Betz, Randal R. MD Study Design. Prospective, longitudinal cohort (nonrandomized). Objective. To compare thoracoplasty (Th),…...

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The Association of Patient Characteristics and Spinal Curve Parameters With Lenke Classification Types

Sponseller, Paul D. MD*; Flynn, John M. MD†; Newton, Peter O. MD‡; Marks, Michelle C. MA, PT‡; Bastrom, Tracey P. MA‡; Petcharaporn, Maty BS‡; McElroy, Mark J. MS*; Lonner, Baron S. MD§; Betz, Randal R. MD‖; the Harms Study Group Study Design. Retrospective review. Objective. To determine the association of…...

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