Ankle sprains are one of the most common injuries treated by the foot and ankle physician, accounting for approximately 20-40% of all athletic injuries.
This typically consists of a sprain of one of the three lateral ankle ligaments (Fig – BLUE; below black line): anterior talofibular (ATFL), calcaneofibular (CFL), or posterior talofibular ligament (CFL), each defined by the direction they occur and bones they connect. ATFL sprains occur 70% of the time with ATFL and CFL simultaneous sprains 20% of the time. The PTFL is rarely sprained at less than 5-10% of the time.
Christopher R. Hood JR, DPM