The HiFi Interface applies alternating pressure to the bones. Longitudinal struts apply centripetal pressure on specific areas of the limb, while windows help manage gradual release of displaced soft tissue. The HiFi is worn at the transfemoral level, where there is a lot of soft tissue. A HiFiTransfemoral Imager is used during the casting or scanning phase with this device trained prosthetists can cast and maintain consistent pressure. Wearers report they can immediately feel the benefits when they step inside.