- severe ankle sprain - high ankle sprain treatment - treatment for ankle sprainbr br How does H.E.M. work? H.E.M. utilizes the most advanced br and effective healing techniques to significantly improve br the speed AND quality of the healing process. br br So, not only will you get out of pain much quicker, you br will also heal much better. That means stronger, healthier br ankles that are at a much lower risk of future injury.