Ankle dorsi flexion against resistance band (Ankle dorsiflexion strengthening, with band, sitting leg straight)

Sit with your legs straight out in front of you.
Place the band around the top of your affected foot.
You can either securely tie the band to a stable object or grown up could hold band out in front of you.
Keeping your leg still and your knee facing up to the ceiling bring your foot up against the band.
Slowly let your foot back down and return to the starting position.