Q&A: What are the treatment option for a 12 year old that has growth plates that have not fused?
The growth plate (apophysis) of the 5th metatarsal typically and normally fuses between the ages of 9 to 14 years. The presence of a growth plate on x-ray in a 12 year old girl is not abnormal, just rest easy. Unless there was an injury you didn’t mention, my best advice is to assure good bone health by regular exercise, eating a good amount of fruit and vegetables (especially legumes and green leafy vegetables, an excellent source of magnesium) including foods rich in calcium (Broccoli, Brussels sprouts, collards, kale, mustard greens, turnip greens…. You know, the stuff kids just LOVE!).
Here is a helpful link on maintaining good bone health in children: