Welcome to HCM and thanks for your query.
It is wise to consult if there is an injury
of such a force.
If you decide to be at home, you probably can safely do if--
1. There is no actively bleeding wound.
2. He has passed clear urine.
3. He is passing flatus.
4. There is no abdominal distension.
5. there is severe pain
It is always better to see physically in such cases, AS HE IS YOUNG AND HAS A LONG AND BRIGHT FUTURE.
Wishing him best health---