Skew foot is a rare type of flat foot described as a "Z" foot or serpentine foot. It is characterized by forefoot adduction and hindfoot valgus.
On standing radiographs the following features are seen:
- abduction at mid tarsal joints with adduction of metatarsals ("Z" configuration)
- first metatarsal base will typically lie lateral to the mid-talar axis
- reduced calcaneal pitch
- plantar flexion of talus