With heterotopic ossification (HO) bone cells form inside soft tissues, such as muscles. This occurs shortly after some other operation. It’s also more likely after a knee joint manipulation.
Patients who’ve had HO are at greater risk of having it again after other surgeries. The doctor can give you treatment before the next operation to prevent HO. This includes radiation and drugs to slow down bone growth. Even with preventive treatment, HO can occur a second time.