Just wandered by and noticed this post. In case it's still useful, I'm wondering if the muscle you have noticeable atrophy in on your formerly-broken leg--is the tibialis anterior. Here's a site with a diagram showing where it's located, its functions, and links to exercises for it: http://exrx.net/Muscles/TibialisAnterior.html The "see also calf exercise analyses" link at the bottom has more good stuff. Here's a highly specific targeted exercise for tibialis anterior strengthening/growth: http://exrx.net/WeightExercises/TibialisAnterior/LVSeatedTibiaRaisePL.html
If you want exercises you can to without special equipment, I think anything that requires ankle dorsiflexion under load would do some good, especially if you try to keep the big muscles of the upper leg from taking over the work. So, squats, but with focus on ankle flexion rather than knee and hip. You mentioned yoga, so, utkatasana variation 3 from hot yoga -- that's the squat with knees pressed together and torso upright, stabilizing the knees and limiting hip flexion -- might be a good one. Or just draping something heavy over your toes and lifting them, or walking through deep sand.
Or, apparently, riding horses hunt seat with deeply flexed ankles/ dropped heels -- that muscle got massive on me back in my horse-riding days. But that's probably not very accessible just for rehab!
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I'm wondering if the muscle you have noticeable atrophy in on your formerly-broken leg--is the tibialis anterior.
Here's a site with a diagram showing where it's located, its functions, and links to exercises for it:
http://exrx.net/Muscles/TibialisAnterior.html
The "see also calf exercise analyses" link at the bottom has more good stuff.
Here's a highly specific targeted exercise for tibialis anterior strengthening/growth:
http://exrx.net/WeightExercises/TibialisAnterior/LVSeatedTibiaRaisePL.html
If you want exercises you can to without special equipment, I think anything that requires ankle dorsiflexion under load would do some good, especially if you try to keep the big muscles of the upper leg from taking over the work. So, squats, but with focus on ankle flexion rather than knee and hip. You mentioned yoga, so, utkatasana variation 3 from hot yoga -- that's the squat with knees pressed together and torso upright, stabilizing the knees and limiting hip flexion -- might be a good one.
Or just draping something heavy over your toes and lifting them, or walking through deep sand.
Or, apparently, riding horses hunt seat with deeply flexed ankles/ dropped heels -- that muscle got massive on me back in my horse-riding days. But that's probably not very accessible just for rehab!
Good luck!