| Accessory navicular bone | |
|---|---|
 X-ray of the foot showing an accessory navicular bone | |
| Details | |
| Identifiers | |
| Latin | os tibiale, os tibiale externum or naviculare secundarium |
| MeSH | C536002 |
| Anatomical terms of bone | |
An accessory navicular bone is an accessory bone of the foot that occasionally develops abnormally in front of the ankle towards the inside of the foot. This bone may be present in approximately 2-21% of the general population and is usually asymptomatic.[1][2][3] When it is symptomatic, surgery may be necessary.
Accessory navicular bone may cause a continuous stretch and stress on the tibialis posterior tendon which can progress to chronic disabling pain and may cause tendon rupture or secondary flat foot deformity; when this occurs this condition is commonly known as accessory navicular syndrome.[4]
Other conditions which closely mimic the symptoms of an accessory navicular bone include plantar fasciitis, bunions and heel spurs.
- ^ "Wheeless' Textbook of Orthopaedics". 2 June 2020.
- ^ "Macrorad Teleradyoloji Olgu Sunumları - SYMPTOMATIC ACCESSORY NAVICULAR BONE".
- ^ Miller TT, Staron RB, Feldman F, Parisien M, Glucksman WJ, Gandolfo LH (June 1995). "The symptomatic accessory tarsal navicular bone: assessment with MR imaging". Radiology. 195 (3): 849–853. doi:10.1148/radiology.195.3.7754020. PMID 7754020.
- ^ Sahibzada N. Mansoora; Farooq A.Rathore (October 2007). "Symptomatic accessory navicular bone: A case series". The Egyptian Rheumatologist. 39 (4): 263–266. doi:10.1016/j.ejr.2017.02.003.