This orthosis is designed to reduce the extreme pronatory forces associated with posterior tibialis dysfunction, often referred to a adult acquired flatfoot. The combination of increased width, deep heel cup and the medial heel skive increase supinatory force across the subtalar joint axis.
The Posterior Tibialis Dysfunction device has a vacuum-formed polypropylene shell with the following prescription:
- Heel cup – 20mm
- Width – wide
- Cast fill – standard
- Medial heel skive – 4mm
- Shell accommodation – medial flange
- Rearfoot post material – firm EVA
- Rearfoot post motion – 0/0
- Topcover – black EVA to toes