Accessory navicular bone: not such a normal variant.
The accessory navicular is often erroneously considered as a normal anatomic and roentgenographic variant. Three distinct types of accessory navicular bones have been described. The type 2 and 3 variants have been associated with pathologic conditions such as posterior tibial tendon tear and painful navicular syndrome and therefore should not be arbitrarily dismissed as a roentgenologic variant in a symptomatic patient. The pathogenesis and radiologic findings are discussed and illustrated.
Bernaerts
A
A
Department of Radiology, Universitair Ziekenhuis Antwerpen (University of Antwerp), Edegem, Belgium.
Vanhoenacker
F M
FM
Van de Perre
S
S
De Schepper
A M
AM
Parizel
P M
PM
D001175:Arthrography; D005530:Foot Deformities / Q000175:diagnosis; D018409:Foot Injuries / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D013639:Tarsal Bones / Q000002:abnormalities* / Q000000981:diagnostic imaging