Inclusion Criteria: Skeletally immature patients that receive AVBT surgical treatment to obtain and maintain correction of progressive idiopathic scoliosis. Specifically:  Diagnosis of idiopathic scoliosis Planned recipient of AVBT surgical treatment Skeletally immature Major Cobb angle ≥30° and ≤65° Osseous structure dimensionally adequate to accommodate screw fixation, as determined by radiographic imaging Failed or intolerant to bracing  Exclusion Criteria:  Presence of any systemic infection, local infection, or skin compromise at the anticipated surgical site Prior spinal surgery at the level(s) to be treated Evidence of documented poor bone quality Any other medical or surgical condition which would preclude the potential benefit of spinal surgery, such as coagulation disorders, allergies to the implant materials, and patient's unwillingness or inability to cooperate with post-operative care instructions as determined by the treating physician Unwillingness, inability, or living situation (e.g. custody arrangements, homelessness, detention) that would preclude ability to return to the study site for follow-up visits as described in protocol and Informed Consent Unwillingness to sign Informed Consent Form and participate in study procedures