Hi there!
Well, without knowing the relevant clinical details/ detailed clinical evaluation or having a look at the radiograph, it would be difficult to comment specifically on the situation. In case if there is actually a fracture, it could have healed in a mal-aligned position or not healed at all. Though an attempt to realign and repair a fracture can be made, the use of supportive techniques such as bone graft may be required. I would suggest discussing the situation and the suggested management plan in detail with your treating orthopedician.
Hope this is helpful.
Take care!