It sounds like you want to go back to running – is this correct?
I agree with my colleagues that the mainstay of treatment for this is physiotherapy or perhaps a surgery. This is of course depending on the cause of impingement, which by what you have written, doesn’t seem to have been identified? Thus it leads me to ask what IS the cause?
As Dr Alan has written, there can be many different aetiologies (causes) from an anatomical perspective, but in your case could it be more functional?
If so, another thing to consider is your gait, running pattern and footwear choices. Depending on how you strike the ground while you are running and your choice of footwear, it might be placing additional pressure over your anterior ankle joint, perhaps contributing to the impingement symptoms.
As such, it might be worth visiting a Sports Medicine Centre or a Sports Podiatrist who provides a running gait analysis and running re-training.
This aims to look at ways to alleviate lower limb symptoms through alterations to your gait, loading patterns, footwear etc. Perhaps consider this before going along for further interventions?
BW and kind regards