Prospective Study of Scheuermann's Kyphosis

Inclusion Criteria: * Patient age \< 21 years * Male or female * Diagnosis of classical Scheuermann's Kyphosis (3 successive vertebrae wedged 5 degrees or more, +/- end plate deformities) or idiopathic structural Kyphosis (rigid structural kyphosis without classic Scheuermann's Kyphosis findings). * for which surgical treatment is recommended to prevent progression of the curvature or to correct trunk deformity (unacceptable cosmesis) - any deformity magnitude. OR * for which surgical treatment is not being undertaken (and alternate treatment, i.e. bracing, or observation) is being pursued for any curve magnitude of clinical concerns of Scheuermann's Kyphosis. * Inclusion Criteria for Anterior Release (for those surgeons performing anterior release surgery): Deformity magnitude = any degree and any other criteria defined by the individual surgeon. * Posterior disc herniation is not an exclusion criteria from being in the study, only from being in the Posterior surgery group - these patients will be defaulted to Ant/Post Surgery. * Only patients that have had a pre-op MRI performed as a part of their routine care, should be included in this study. Exclusion Criteria: * Previous operated Kyphosis, Scoliosis or Spondylolisthesis * Neuromuscular co-morbidity * Post laminectomy kyphosis