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Rocker Bottom Feet

by Dr. M Taussef Omer

Rocker Bottom Feet may appear as a phenotypic characteristic of Trisomy 18 (Edwards Syndrome
or in Trisomy 13 (Patau’s Syndrom) or in Trisomy 9.Rocker Bottom Feet takes its name from the curved feet of
Rocking Chair (Rocker Chair).

In Trisomy 18 (edwards syndrome) rocking bottom feet are accompanied by
Microganathia, flexion defect in 3rd and 4th fingers , prominent occiput and Congenital heart disease.

Whereas in Trisomy 13 (Patau’s Synrome) rocking bottom feet are associated with
Polydactyly, Micropthlamia,cleft lip and palate.

(While in both trisomy 18 and trisomy 13 there is mental retardation as common feature)

This defect of feet occurs because TALUS is VERTICALLY Long and it makes the Calcaneus very Prominent.

This diagram shows  Foot bones anatomy. The talus bone demonstrated here (in diagram) will get large in Vertical way in Rocking Bottom Feet.
normal foot bones anatomy


Photo demonstrates the curved feet of a rocking chair.

rocking-chair demonstrating rocking bottom feet


rocking bottom feet newborn    rocking bottom feet child  Photos demonstrating rocking bottom feet .

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