Turkish Journal of Physical Medicine and Rehabilitation 2011 , Vol 57 , Num 3
Accessory Navicular Bone Mimicking Navicular Fracture after Ankle Sprai
Muharrem Çidem 1 ,Murat Uludağ 2 ,Kerem Gün 2 ,Ülkü Akarırmak 3
1 Bağcılar Eğitim ve Araştırma Hastanesi, Fizik Tedavi ve Rehabilitasyon Kliniği, İstanbul, Türkiye
2 İstanbul Üniversitesi Cerrahpaşa Tıp Fakültesi, Fiziksel Tıp ve Rehabilitasyon Anabilim Dalı, İstanbul, Türkiye
3 İstanbul Üniversitesi Cerrahpaşa Tıp Fakültesi, Fiziksel Tıp ve Rehabilitasyon Anabilim Dalı, İstanbul Türkiye
DOI : 10.4274/tftr.07108

An accessory navicular bone (ANB) is present in 10-30% of normal feet. A morphological classification of ANB on the basis of the radiographic appearance distinguishes three types. Most symptomatic ANBs are of type 2. Although the diagnosis and treatment of sprained ankle are generally straightforward, together with an ANB, it might be misdiagnosed as a fracture. We present a 20-year-old male with type 2 ANB who was misdiagnosed as navicular fracture following sprained ankle. 

Keywords : Accessory navicular bone, ankle sprain, navicular fracture