Functional ankle orthosis consisting of a rigid support associated with 2 adjustable and compressive straps. The L-shaped support effectively stabilizes the front drawer. The crossing of the 2 straps in the midfoot limits the movements of aversion and eversion of the ankle. Thin and light, it can be worn with any type of lace-up shoe. Indicated for recovery from ligament injuries. Recovery of ankle fractures with or without surgery. And as a preventive treatment and / or resumption of sporting activity. It is also recommended for chronic laxity. Supplied in size 1.