Orthopaedics All are true regarding pes planus except: A There is collapse of medial longitudinal arch B The heel becomes valgus and foot pronates at the subtalar-mid complex joint C Jack's test differentiates between flexible and rigid deformity D One of the common type of tarsal coalition is calcaneonavicular & it is autosomal recessive 💡 Explanation All are true regarding pes planus except: ✓ Correct Answer: D. One of the common type of tarsal coalition is calcaneonavicular & it is autosomal recessive