Sprained ankle in dec.had mri a few days ago they said it looked normal. but my ankle is still swollen and pops everytime i tilt it. what could thisbe?

Swollen ankle: There can be a number of reasons your ankle swells, and pops. You may have subluxing tendons, instable subtalar joint, chronic ankle sprain, ankle arthritis, as well as some tendon pathology. You need to ask yourself if it hurts, if you feel unstable, and does it impede in your daily life? If so please continue to seek professional help.

Unstable ankle: Mri of ankle is just a static picture of the structures around the ankle. You may have a ankle ligament(s) that have healed stretched out. You also may have popping because of a persistent effusion (fluid with the ankle joint). Ankle swelling in and of itself after an ankle sprain can take many months to resolve since ankle is lowest part of body. Follow up with your doctor.

Tendon dislocation: One of the reasons ankle sprains continue to be symptomatic after few months is subluxation of the tendons on the outer side of the ankle. The tendons move out of place and pop when the ankle changes positions during activity. It is diagnosed during the clinical exam and may be missed by mri.