Bilateral congenital vertical talus with severe lower extremity external rotational deformity: treated by reverse Ponseti technique.

Congenital vertical talus, also known as congenital convex pes valgus, is a complex, rare, foot deformity that is resistant to conservative treatment. We report a case of bilateral congenital vertical talus with severe lower extremity external rotational deformity that was treated by means of a method of serial manipulations and casts. Although the initial manipulation and casting before surgical treatment is the current concept of idiopathic congenital vertical talus, a good result can be obtained by a well-organized conservative treatment with the help of patient compliance, so routine surgical release of the Achilles tendon may not be necessary in all cases.