Can you tell me if a jogger has stepped in a pothole and sprained his ankle. what systems have suffered damage?

Systems: No systems usually suffer damage . It is usually localized to the ankle and or lower leg and foot

Sprained ankle: Somebody with a sprained depending the severity of it can tear the ankle ligaments or even suffer a fracture . Evaluation by the proper specialist is advised.

Sprained ankle: A sprained ankle is an injury to the ankle ligaments and tendons surrounding the ankle joint. If a sprained ankle lasts more than a week than it is no longer a sprained ankle.... Need to rule out tears of the ligaments and tendons at that point.

Needs investigation.: Ankles particularly need investigation if your pains have not improved in a short period of time. If you find yourself limited after two weeks because of the ankle, you'd really need an MRI scan to be sure there's no ligament injury.