“…Historically, the incidence of the PCI muscle had not been extensively documented in the literature due to its scarcity. Recently, however, MRI studies have identified this muscle in patient populations (Mellado et al,1997; Cheung and Rosenberg,2001; Best et al,2005; Seipel et al,2005; Carroll,2008; Sookur et al,2008; Amini,2011). According to these MR images, the PCI originated in the inner aspect of the lower third of the fibula below the origin of the FHL muscle and inserted either into the inferior surface of the medial calcaneus just distal to the sustentaculum tali (Mellado et al,1997; Cheung and Rosenberg,2001; Carroll,2008; Sookur et al,2008; Amini,2011) or into the sustentaculum tali itself (Best et al,2005; Seipel et al,2005).…”