No worries at all. Just Check whether he is able to move his elbow or not. If he can move it with mild pain, then Give ice pack application thrice a day for 15mins. And Tablet ULTRACET for a 5 days one to two per day depending on the quantity of pain. Tablet Chymoral forte thrice a day for 5 days, if swelling is there. Let him take some rest. If unable to move the Limb, and it severely got hurt then only he needs an X Ray. Take care.
Next Steps
If pain subsides after a week, he can stop using medication.