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Proximal femoral deformities can occur in children as sequelae of several disorders such as hip joint infection or avascular necrosis of the femoral head. Early surgical correction of deformities promises a good result; however, limited exposure of the surgical field often creates difficulties for surgeons. Application of a rapid prototyping model for proximal femoral corrective osteotomy in children serves not only as a guide for surgical planning but also as a communication tool between physicians and patients. [ABSTRACT FROM AUTHOR]