Examination showed collapse of the longitudinal arch with a rocker bottom deformity and a plantar ulcer under the plantar midfoot bony prominence. Investigations. Radiographs of the foot.

The arch in the middle of your foot may drop until the bones are lower than your heel or toes. Doctors sometimes call this “rocker bottom” Your toes may curl Your ankle might become twisted ...

Seventy-one feet in 57 patients with plantar fasciitis were treated with the combination of a night splint and a shoe modification consisting of a steel shank and anterior rocker bottom.