This site is targeted at medical and radiology professionals, contains user contributed content, and material that may be confusing to a lay audience. Use of this site implies acceptance of our Terms of Use.

Rocker bottom foot

A rocker bottom foot (also known as a congenital vertical talus) is a congenital anomaly of the foot. It is characterised by a prominent calcaneus (heel) and a convex rounded sole.

Pathology

It results from a dorsal and lateral dislocation of the talonavicular joint 

Associations

Radiographic features

For assessment of the foot alignment abnormalities, it is important to perform weight bearing images or an equivalent in neonates (foot X ray):

  • fixed equinus: plantarflextion of the calcaneus 
  • vertical talus: plantarflextion of the talus- increased talocalcaneal angle​
  • irreducible dorsal sublaxation or dislocation of the navicular 
  • forefoot valgus: divergence of bases of the metatarsal heads on AP and superimposition of the metatarsal bones on the lateral view          
  • long axis of the talus passes plantar to metatarsal axis on lateral view and medial to the first metatarsal on AP view

The presence of a rocker bottom foot in an antenatal ultrasound scan is sometimes classified as a soft sign for aneuploidic anomalies 3.

Differential diagnosis

In the antental-neonatal period consider
In the adult period consider

Updating… Please wait.
Loadinganimation

Alert_accept

Error Unable to process the form. Check for errors and try again.

Alert_accept Thank you for updating your details.