Equinovalgus
– Discussion: – in polio, paralytic equinovalgus deformity results from paralysis of tibialis anterior and posterior, together w/ unopposed action of peronei and triceps surae; – os calcis is everted and is displaced laterally and posteriorly; – sustentaculum tali can no longer function as calcaneal buttress for talar head, which shifts medially and into equinus; – hindfoot … Read more