Adolescent idiopathic scoliosis: a new classification to determine extent of spinal arthrodesis

LG Lenke, RR Betz, J Harms, KH Bridwell… - JBJS, 2001 - journals.lww.com
Background: The lack of a reliable, universally acceptable system for classification of
adolescent idiopathic scoliosis has made comparisons between various types of operative …

Sagittal alignment of the spine and pelvis during growth

JM Mac-Thiong, É Berthonnaud, JR Dimar, RR Betz… - Spine, 2004 - journals.lww.com
Study Design. Prospective study of the sagittal plane alignment of the spine and pelvis in
the normal pediatric population. Objectives. To document the sagittal alignment of the spine …

Sagittal spinopelvic balance in normal children and adolescents

…, H Labelle, E Berthonnaud, RR Betz… - European Spine …, 2007 - Springer
The sagittal spinopelvic balance is poorly documented in normal pediatric subjects. The
purpose of this study is to characterize the sagittal spinopelvic balance in the pediatric …

Limitations of autograft and allograft: new synthetic solutions

RR Betz - Orthopedics, 2002 - journals.healio.com
Autogenous cancellous bone is widely regarded as an ideal construct for graft procedures,
supplying osteoinductive growth factors, osteogenic cells, and a structural scaffold. However, …

Comparison of anterior and posterior instrumentation for correction of adolescent thoracic idiopathic scoliosis

RR Betz, J Harms, DH Clements III, LG Lenke… - Spine, 1999 - journals.lww.com
Study Design. This was a prospective study of two cohort groups of patients (one group receiving
anterior instrumentation and the other posterior instrumentation) receiving treatment for …

Results of in situ fusion for isthmic spondylolisthesis

LG Lenke, KH Bridwell, D Bullis, RR Betz… - Clinical Spine …, 1992 - journals.lww.com
Between 1976 and 1990, we treated 56 isthmic spondylolisthesis patients with an average
age of 15+ 4 (range, 4+ 9 to 27±2) with in situ bilateral transverse process fusions utilizing …

Multisurgeon assessment of surgical decision-making in adolescent idiopathic scoliosis: curve classification, operative approach, and fusion levels

LG Lenke, RR Betz, TR Haher, MA Lapp, AA Merola… - Spine, 2001 - journals.lww.com
Study Design. A multisurgeon assessment of curve classification, selection of operative
approach, and fusion levels via a case study presentation. Objectives. To evaluate the ability of a …

Development and initial validation of the Classification of Early-Onset Scoliosis (C-EOS)

…, DJ McCalla, BA Akbarnia, LC Blakemore, RR Betz… - JBJS, 2014 - journals.lww.com
Background: Early-onset scoliosis is a heterogeneous condition, with highly variable
manifestations and natural history. No standardized classification system exists to describe and …

Evaluation of proximal junctional kyphosis in adolescent idiopathic scoliosis following pedicle screw, hook, or hybrid instrumentation

…, SA Shah, PO Newton, DH Clements III, RR Betz… - Spine, 2010 - journals.lww.com
Study Design. Retrospective review. Objective. To compare the incidence of and risk factors
for proximal junctional kyphosis (PJK) in adolescent idiopathic scoliosis (AIS) following …

Intraobserver and interobserver reliability of the classification of thoracic adolescent idiopathic scoliosis

LG Lenke, RR Betz, KH Bridwell, DH Clements… - JBJS, 1998 - journals.lww.com
The system described by King et al. is the standard method for the classification of thoracic
adolescent idiopathic scoliosis. Although it is widely used and referenced, its reliability and …