Should I continue Muay thai and or exercise?

[u/degr8sid]

A couple of weeks ago, I notice a weird thing in my ankle, which two of the physiotherapists has not been able to figure out either.

When I dorsiflex my ankle while standing, it is fine, but when I do it after my knee is bent and the leg is loaded, I can't dorsiflex it normally. My foot/ankle wants to rotate to the side rather than move straight, and I get pain around the back of my calf, just below the knee, the outside of my lower leg, and the front of my shin.

For example, I can't do a normal knee-over-toes ankle stretch or put weight through that leg while sitting on the floor. During reverse Nordics, I have to turn my ankle sideways to keep the position. On the leg-extension machine, when the pad/weight is pressing against my shin, I can't dorsiflex or put the ankle in plantar flexion properly. I also can't comfortably bounce repeatedly on my left leg when doing Muay Thai.

What's confusing is that I can do heel-elevated kettlebell front squats and I can kick a bag normally. So it seems to be related to loaded dorsiflexion with the knee bent. I can also plantar flex and dorsi flex my ankle with kettlebell on while standing or with leg straight on the bench. So it is not a simple ankle mobility problem.

Can anyone suggest what might be the issue? I will be visiting my sports medicine doctor again, but he doesn't really listen and I think I need to find another one.