Fibular Tip Periostitis: New Radiographic Sign, Predicting Chronic Peroneal Tendon Subluxation/Dislocation in the Setting of Pes Planovalgus

Background: Tearing of the superior peroneal retinaculum (SPR) is a known cause of peroneal tendon subluxation/dislocation (PTS). However, with the exception of cortical avulsions at its fibular at...