β£What are the risk factors for heterotopic ossification?β£What are the stages of Heterotopic ossification?β£How long does it take to mature?β£What is the histology?β£What is the incidence of Hip HO?β£Hip HO Classification?β£Elbow HO Classification?β£Heterotopic Ossification Prophylaxis?β£Management of Heterotopic Ossification?β£How does radiation work?