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Surgical management of Early Onset Spinal Deformity with magnetically controlled growing rods (MCGR) is a common intervention. Multiple complications of the use of these devices have been reported in the literature. To date, failure of the device to lengthen due to the physical distance of the rods from the external controller due to patient body habitus has not been reported. Consideration of the resultant distance from the external remote controller to the rods should be part of preoperative planning and intraoperative decision-making.