Firmly fix a resistance band to a stable object low behind you
Place the band around the front of your affected ankle and move away from its fixing to take the slack off the band
Squat down in half-kneeling so that the band is around the ankle in front
Pull your toes upwards using your hands and keep your heel on the floor
When ready, move your weight forwards to take your knee over your toes in order to bend your ankle further
Pause briefly, then repeat
