Ankle sprain 3+ months ago. Can scar tissues in the ankle cause tightness inside the ankle. How to loosen tightness? Pain in ankle during calf stretch

Scar is your friend. In this case scar is your friend as it by this mechanism that healing of sprains occurs it takes several months to fully recover/ try to avoid repeat injuries general stretching helps/ backward walking helps/ hot and cold packs help and the both work go back and forth between the two also consider wrapping the ankle with plastic wrap at bedtime this helps to limber up stiff tissue good luck in.