Os supranaviculare

Last revised by Dr Yahya Baba on 10 Oct 2021

An os supranaviculare is an accessory ossicle of the foot, located at the proximal dorsal aspect of the navicular bone or talonavicular joint. It is also known as Piries bone, talonavicular dorsale, or (dorsal) talonavicular ossicle and is present in ~1% of the population. 

Differential diagnosis

An os supratalare is also anatomically seen in close proximity, sitting above the talar beak, but not at the superior margin of the navicular bone.

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Cases and figures

  • Case 1
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  • Case 2
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  • Case 3: with os tibiale externum
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  • Case 4: annotated
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  • Case 5: partially incorporated
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  • Case 6: bilateral
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  • Case 7
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  • Case 8
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