The presence of limb deformities in children can be due to many causes such as:

• Post-traumatic, after a fracture.
•  Congenital, which are present from the time of birth.
•  In relation to a metabolic syndrome.
•  Idiopathic, where the pathological causes are unknown.
• Neuromuscular diseases.

 In children, correction of deformities due to developing cartilage can be accomplished in the following ways:

•  Hemi-epiphysiodesis, with the use of small metal plates that are applied across the part of the bone which is still growing. This technique allows gradual guided correction of the deformity avoiding the need to break the bone (osteotomy).