An ankle-foot orthosis having a tubular calf brace and a splint. The calf brace is configured to substantially enclose and compress a calf of a patient and includes a front wall, a rear wall and a chute formed at the rear wall. The splint includes a footplate and a stalk extending from the footplate, the stalk being insertable into the chute of the tubular calf brace to removably secure the splint to the tubular calf brace.