Instratek® Sub-Talar Lok arthroereisis implant restricts excessive subtalar pronation in all three planes providing a more normal subtalar joint motion for patients. Sub-Talar Lok is indicated for pathologic conditions resulting from disease, injury, or trauma in patients with hypermobile pes valgus, posterior tibial dysfunction, severe pronation, subtalar instability, and hypermobile flexible congenital flat foot. Our subtalar implants are manufactured from medical grade titanium, Ti-6AL-4V, and offered in 5 color coded sizes including procedure specific instrumentation.