What is the cause of the residual condition for traumatic osteoarthritis of the wrist due to a fracture from 5 years ago

Post-traumatic inflammatory arthritis are frequently  found from those with a history of physical trauma. Several theories have been made to explain the mechanisms behind the onset of Post-traumatic  osteoarthritis, but the exact pathogenesis is still uncertain. It has been proposed that a genetic predisposition may be a cause of residual condition due to fractures from months to years ago.

1 true

2 true

and 3 true im assuming these are true or false. hope this