Skew foot

Last revised by Tim Luijkx on 7 Mar 2018

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.

Radiographic features

Plain radiographs

On standing radiographs the following features are seen:

  • AP
    • abduction at mid tarsal joints with adduction of metatarsals ("Z" configuration)
    • first metatarsal base will typically lie lateral to the mid-talar axis
  • lateral
    • reduced calcaneal pitch
    • plantar flexion of talus

Differential diagnosis

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