Aircast AirLift PTTD Post-Op Ankle Brace SupportDesigned for pre and post operative use, the Aircast AirLift PTTD Brace is designed specifically for the challenges of posterior tibial tendon dysfunction or early signs of adult acquired flat foot. This brace provides foot and ankle stabilization while using an air cell under the arch that can be adjusted during wear. Aircast AirLift PTTD Brace Features Semi rigid shells for ankle stabilization Integrated air cell under arch Inflates even during wear