I am having recurrent very sharp pain in my ankle which was injured about 5 years ago in a fall. it was not broken, took years before i stopped having intermittent sharp pains when walking, particularly if i walk on uneven surfaces. i have done nothing

How's : How's the weather down there in dallas? I ask, not to be snotty, but because one of the possibilities is you're developing arthritis, which is typically made worse with weather changes. The other thought that comes to mind is a talar dome fracture. The talus is the bone that connects the ankle bones with the foot. The "dome" is the top part. Some talar dome fractures are so tiny that they aren't seen on x-ray, and if the "cuts" in the ct scan you had weren't small enough (close together), a small talar dome fracture could escape detection in a ct scan as well. What happens in talar dome fractures is, since the entire dome of the talus is cartilage (and cartilage is not visible on x-ray), the blood supply to it is poor. That little piece of bone could slowly rot away, or break free and start rolling around inside the ankle joint, grinding away at the cartilage, producing arthritis. Start with getting it re-x-rayed, and if nothing is still showing, a ct scan or MRI with 3 mm cuts in three planes would detect an occult talar dome fracture. Hope this helps. Good luck and feel better!