Considering the problems associated with traditional external fixators, hybrid systems or mechanically lengthening intramedullary nails, externally controlled motorized lengthening nails have become a very popular and effective method for the pediatric and adolescent population. Programmable lenghthening of magnetic nails is a non-invasive procedure that allows precise distraction of the nail. There are few programmable motorized lengthening nails available in the market today. New generation programmable magnetic lengthening nails; it is a treatment method that can be safely applied with a comprehensive pre-operative planning and preparation, good experience and surgical technique and family training, with satisfactory results.