The planovalgus rheumatoid foot--is tibialis posterior tendon rupture a factor?

The purpose of this study was to assess gross tibialis posterior tendon (TPT) integrity in a series of patients with a planovalgus foot deformity secondary to rheumatoid arthritis. This was done by means of contrast tenography. Our findings of an intact tendon in all of the seventeen patients studied suggest that complete rupture of the TPT is not the primary aetiology in the planovalgus rheumatoid foot.