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Specialty Tags: pediatrics, Pediatric Orthopaedic Surgery, vertebrae, spine and vertebra, Roger F. Widmann MD, scoliosis, AIS, children scoliosis, adolescent idiopathic scoliosis, spinal fusion instrumentation, pediatric service, HSS, HSS education Institute, Orthopaedics, hospital for special surgery, orthopedic hospital, education institute, orthopedic medical education, free orthopedic educations orthopedic educations resident education, continuing education, orthopedic surgical videos