A foot splint for the prevention and rehabilitation of plantar fasciitis by maintaining a wearer's foot and, hence, his plantar fascia in a pre-selected amount of dorsiflexion. The foot splint includes a footplate for supporting the wearer's foot, a bracket integrally attached to the footplate near the heel region, where the bracket has at least one ankle angle preset, a strut (either medial, lateral, or both sides) extending along the lower leg of the wearer, a strut sleeve removably enveloping the strut. The sleeve has an upper end and a lower end, and the strut protrudes from the lower end of the sleeves. There is an adjustable leg strap attached to the strut sleeve at the upper end. The strap secures the upper end to the leg of a wearer during operation. A padded insole may be provided to cushion the wearer's foot from the footplate. The foot splint provides a comfortable “slipper-like” feel for the wearer.