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…...
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†;…...
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…...
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…...
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…...
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…...
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…...
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…...
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),…...
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…...