Single leg RDL

Stand straight on your injured ankle and make sure you hit 3 points of contact with the ground — big toe, pinky toe, and a heel.

Create the arch and then bring your opposite knee up in about 90 degrees position.

Engage your glutes and core to stay stable.

After that, lean forward, bring your leg back and make it straight.

Imagine a plank going thru your spine — your leg and spine should be straight and move together.