Marks, Michelle PT, MA*; Newton, Peter O. MD*,†; Petcharaporn, Maty BS*; Bastrom, Tracey P. MA*; Shah, Suken MD‡; Betz, Randal MD§; Lonner, Baron MD‖; Miyanji, Firoz MD¶ Study Design. A cross-sectional study. Objective. The purpose of this study was to assess intervertebral segmental and cumulative motion in the distal unfused…...
Impact of Direct Vertebral Body Derotation on Rib Prominence: Are Preoperative Factors Predictive of Changes in Rib Prominence?
Hwang, Steven W. MD*; Samdani, Amer F. MD*; Lonner, Baron MD†; Miyanji, Feroz MD‡; Stanton, Paul DO*; Marks, Michelle C. PT, MA§; Bastrom, Tracey MS§; Newton, Peter O. MD§; Betz, Randal R. MD*; Cahill, Patrick J. MD* Study Design. Multicenter retrospective review of prospectively collected data. Objective. To determine the…...
Do Discs “Open” Anteriorly With Posterior-Only Correction of Scheuermann’s Kyphosis?
Tsutsui, Shunji MD*; Pawelek, Jeff B. BS*; Bastrom, Tracey P. MA*; Shah, Suken A. MD†; Newton, Peter O. MD*,‡ Study Design. Retrospective radiographic analysis. Objective. To investigate where and to what degree the correction of Scheuermann’s kyphosis occurred in two different procedures: posterior instrumentation/fusion with an anterior release and posterior-only…...
Did the Lenke Classification Change Scoliosis Treatment?
Clements, David H. MD*; Marks, Michelle PT, MA†; Newton, Peter O. MD†,‡; Betz, Randal R. MD*; Lenke, Lawrence MD§; Shufflebarger, Harry MD¶; Harms Study Group Study Design. A retrospective review of data prospectively entered into a multicenter database. Objective. To evaluate the adherence to classification-specific surgical treatment recommendations for adolescent…...
Selective Thoracic Fusion in Adolescent Idiopathic Scoliosis: Factors Influencing the Selection of the Optimal Lowest Instrumented Vertebra
Takahashi, Jun MD*; Newton, Peter O. MD†; Ugrinow, Valerie L. BA†; Bastrom, Tracey P. MA† Study Design. Analysis of multicenter, prospectively collected data. Objective. To determine how selection of the lowest instrumented vertebra (LIV) relative to the stable vertebra (SV) and the end vertebra (EV) effects correction of the main…...
Bone Grafting Options in Children
Betz, Randal R. MD*; Lavelle, William F. MD†; Samdani, Amer F. MD* Study Design. Retrospective review of the literature. Objective. To review the current literature as well as recent trends in bone grafting techniques available for children. Summary of Background Data. The currently accepted gold standard in bone grafting for…...
Preservation of Thoracic Kyphosis Is Critical to Maintain Lumbar Lordosis in the Surgical Treatment of Adolescent Idiopathic Scoliosis
Newton, Peter O. MD*†; Yaszay, Burt MD*†; Upasani, Vidyadhar V. MD*; Pawelek, Jeff B. BA†; Bastrom, Tracey P. MA†; Lenke, Lawrence G. MD‡; Lowe, Thomas MD§; Crawford, Alvin MD¶; Betz, Randal MD∥; Lonner, Baron MD**; Harms Study Group Study Design. Retrospective analysis of prospectively collected multicenter series. Objective. To evaluate…...
Variations in Pelvic and Other Sagittal Spinal Parameters as a Function of Race in Adolescent Idiopathic Scoliosis
Lonner, Baron S. MD*; Auerbach, Joshua D. MD†; Sponseller, Paul MD‡; Rajadhyaksha, Amar D. MD*; Newton, Peter O. MD§ Study Design. A retrospective review of clinical and radiographic data from a multicenter adolescent idiopathic scoliosis (AIS) database. Objective. The purpose of this study was to perform a comprehensive radiographic evaluation…...
Evaluation of Proximal Junctional Kyphosis in Adolescent Idiopathic Scoliosis Following Pedicle Screw, Hook, or Hybrid Instrumentation
Helgeson, Melvin D. MD*; Shah, Suken A. MD†; Newton, Peter O. MD‡; Clements, David H. III MD§; Betz, Randal R. MD¶; Marks, Michelle C. PT, MA‡; Bastrom, Tracey MA‡; The Harms Study Group Study Design. Retrospective review. Objective. To compare the incidence of and risk factors for proximal junctional kyphosis…...
Adolescent Idiopathic Scoliosis Treated With Open Instrumented Anterior Spinal Fusion: Five-Year Follow-up
Tis, John E. MD*; O’Brien, Michael F. MD†; Newton, Peter O. MD‡; Lenke, Lawrence G. MD§; Clements, David H. MD¶∥; Harms, Jürgen MD**; Betz, Randal R. MD¶ Study Design. A multicenter prospective database was queried for patients who underwent open instrumented anterior spinal fusion (OASF) for treatment of primary thoracic…...