Miss!!!, this is a chronic condition now, to me it looks like a combination of nerve and joint issue. I need to examine you and start treatment properly. There are many good treatment available which can treat you without surgery. But you need a thorough and revised evaluation.
Till the time you can take tab paracetamol as it is associated with least side effects.
Next Steps
get a repeat MRI if not done in last 1 year
NCV rt leg to test any nerve related problem
Health Tips
exercise gradually and increase duration of warmups.
use cold packs instead of hot