DonJoy Arch Rival Orthotic Inserts,DonJoy Arch Rival Orthotic Inserts, The DonJoy Arch Rival orthotic inserts are a patented pre fabricated orthotic designed to treat Subtle Cavus Foot (SCF) which is characterized by higher arches and heel varus. These orthotics help promote natural foot function which includes improving stability, adding shock absorption and alleviating pain. The recessed area under the 1st metatarsal head accommodates the plantar flexed 1st ray and allows hindfoot