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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 and pelvis and its change during growth in the normal pediatric population. SUMMARY OF BACKGROUND DATA Pelvic morphology as well as sagittal alignment of the spine and(More)
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 number of screws correlated with the major curve (thoracic or lumbar) correction at 2 years in patients with AIS. We also investigated the effect of(More)
STUDY DESIGN Multicenter retrospective cohort study of 269 patients. OBJECTIVE The purpose of this study is to evaluate the surgical and radiographical factors in adolescent idiopathic scoliosis (AIS) surgery that significantly affect kyphosis maintenance. SUMMARY OF BACKGROUND DATA Decreased kyphosis in the thoracic spine is a component of the(More)
STUDY DESIGN A retrospective multicenter consecutive case review of operative adolescent idiopathic scoliosis. OBJECTIVES To define the curve prevalence of a large consecutive series of cases with operative adolescent idiopathic scoliosis as classified by a new system and to test the ability of this new classification system to correlate with regions of(More)
STUDY DESIGN Multicenter, retrospective, nonrandomized comparison group study of patients with severe scoliosis and kyphosis treated after 1995 with halo-gravity traction and without halo-gravity traction before definitive fusion. OBJECTIVE Compare surgical correction of severe spine deformity with preoperative halo traction and without preoperative(More)
BACKGROUND Previous research has suggested a correlation between pulmonary impairment and thoracic spinal deformity. The curve magnitude, number of involved vertebrae, curve location, and decrease in thoracic kyphosis independently contribute to pulmonary impairment, but the strength of these associations has been variable. The objectives of this study were(More)
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 population and to evaluate the correlations between spinopelvic parameters. Seven parameters were evaluated from the lateral standing radiographs of 341 normal subjects aged 3-18(More)
The objective of this study was to develop and test the feasibility of a model that employs electromyographic (EMG) signals to predict the occurrence of gait events in the child with cerebral palsy (CP). This model could be the basis of a future functional electrical stimulation (FES) control system to assist gait. Two children were implanted with bifilar(More)
STUDY DESIGN A prospective, randomized study. OBJECTIVE To compare the clinical results of posterior spinal fusion (PSF) with allograft augmentation versus no graft for patients with adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA The use of allograft has become a standard means of augmenting a PSF. Many studies have shown equal rates(More)
STUDY DESIGN Prospective, longitudinal cohort (nonrandomized). OBJECTIVE To compare thoracoplasty (Th), direct vertebral body derotation (DVBD), and Th and DVBD with respect to correction of the rib prominence and Scoliosis Research Society (SRS) self-image scores in patients undergoing surgery for adolescent idiopathic scoliosis (AIS). SUMMARY OF(More)