On-Going Tendon or Joint Pain in Ankle

Background:

Ankle broken in early June, surgery 2 weeks later to remove some large bone fragments. OS said injury was one of the worse he's seen in 20+ years.
NWB for a total of 9 weeks, then was allowed to walk towards the end of August.
PT for 3 months
Pain in peroneal tendon area when going up on my toes, going up and down stairs, attempting to jog... starting when allowed to go weight bearing. PT was a bit concerned but not majorly.

MRI showed no tear, however pain continued to get worse. Currently it is painful to walk, not so much that I can't walk, but still noticeably painful. It generally is quite a bit more painful after sitting down or not walking on it, but the pain never goes away completely. It's a sharp pain that is right along the peroneal tendon (from what we can tell). OS said it may also be from the joint, just feels like around the tendon due to compensation.

I've also gotten a snapping feeling, usually about 1x a day that feels like a rubber band has snapped... and it hurts horribly.

Follow-ups with OS every 4-6 weeks... OS is at a loss right now and after trying multiple things that have not helped, he has put me back in a walking boot until my next follow-up to see if that helps.

He also wants me to get a second opinion with another OS foot/ankle specialist at Johns Hopkins to see if he can find anything. Surgical options were brought up (one to see if we can find something that's going on, another to help with arthritis if that was the cause)... but we are trying to avoid that and that would be a last option...

Do you have any ideas on what would cause the pain I'm describing? We are really at a loss and it will be a couple of months until the doc he wants me to see for a second opinion has an opening...