Why do the lateral parts of my ankles get sprained easily?

It depends: Many people suffer from lateral ankle injuries. At your age, I would get evaluated. Many times when an ankle is injured, it is prone to re-injury if not properly treated with rehabilitation etc. Please see your orthopedic surgeon to get the proper exam and further studies.

Very, Very popular..: 16 year old females are in the middle of the group of people that have the highest occurrence of ankle sprains. So, you are not alone. As stable as the ankle can seem, a slight deviation in foot and/or ankle mechanics can cause the foot to collapse inward thus causing the later ankle damage that is so commonly seen. A consultation with a Healthtap specialist could help prevent future sprains.