Accessory ossicles of the foot

Accessory ossicles of the feet are common developmental variants with almost 40 having been described. The more common ones include:

Knowledge of their presence is helpful so that they are not misdiagnosed as fractures.


Lower limb anatomy
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Article Information

rID: 18879
System: Musculoskeletal
Section: Anatomy
Synonyms or Alternate Spellings:
  • Secondary ossification centers of the foot
  • Accessory ossicles of feet
  • Accessory ossicles of foot
  • Accessory ossicles of the feet

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    Figure 1: common accessory ossicles
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    Figure 2: common accessory ossicles
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    Case 1: os tibiale externum (accessory navicular)
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    Os peroneum
    Case 2: os peroneum
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    Os trigonum
    Case 3: os trigonum
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    Case 4: os subfibulare
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    Case 5: os supranaviculare
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