In this presentation, we will examine the role of Posterior Tibialis in repetitive ankle sprains, compartment syndrome and ankle mobility and explain how dysfunction in the short head of Bicep femoris is the most likely cause of chronic knee pain. Understanding the typical dysfunctional patterns in these important lower extremity muscles, and how to treat them is the key to quickly unlocking ankle and knee pain. We take a thorough approach to correcting dysfunction, starting with establishing the nature of the client's present dysfunction through detailed assessment, progressing into clear and simple treatment strategies that target these specific muscles and finishing with individualised home care.