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Inter-Observer and Intra-Observer Reliability of the Risser Sign in a Metropolitan Scoliosis Screening Program

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Ultrasonographic Evaluation of the Risser Sign

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Improved accuracy in Risser sign grading with lateral spinal radiography

(2008) Tomasz Kotwicki   EUROPEAN SPINE JOURNAL

Radiographic versus ultrasound evaluation of the Risser Grade in adolescent idiopathic scoliosis: a prospective study of 46 patients

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Predicting Scoliosis Progression from Skeletal Maturity: A Simplified Classification During Adolescence

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