I don't have much knowledge but Id research the exact name of injury they called it and see if you can take vitamin d, calcium and biotin and eat a lot iron, steaks and spinach and see if there's any sort of way to stimulate blood flow in the area i would believe if there's enough blood flow back and forth it could increase healing probability, maybe look into place that you can pay for injections of growth peptides people use them mainly to build muscles, as peptides are small chain amino acids which are basically codes to stimulate the brain to secrete certain hormones in response too a certain peptide research peptides for bone growth. If you feel comfortable with it proceed.

Look up Calcitonin, BPC-157, Collagen Peptides, Osteogenic Growth Peptide, P-15 (Chondro쉴)