What is a good means of determining if i fractured my ankle or sprained it?

X-ray to be sure: Unless there is an obvious deformity you may not be able to tell the difference with the naked eye. While a sprain is an injury to the ligaments of the ankle, and a fracture is damage to the bone; strains of muscles and tendons are also possible. In any case, common symptoms may be pain, limited strength/ motion, swelling, and/ or bruising. Have an x-ray to be sure!

X-ray: You will need and x-ray to see if you have a fracture or if it is just a sprain. Have it evaluated by your physician to get the appropriate treatment.