Fabella

The fabella is an accessory ossicle typically found in the lateral head of the gastrocnemius. It occurs in ~20% (range 10-30%) of the population 1

The fabella can also be fibrocartilaginous in nature and is occasionally found in the medial head of the gastrocnemius. The fabella articulates with its respective (medial or lateral) femoral condyle.

History and etymology

Fabella is Latin for "little bean".

Anatomy: Lower limb
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Article information

rID: 22122
Section: Anatomy
Synonyms or Alternate Spellings:
  • Os fabella
  • Fabellae

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Cases and figures

  • Case 1
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  • Case 2: annotated image
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  • Case 3: typical position on frontal projection
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  • Case 4
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  • Case 5
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  • Case 6: fractured fabella
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  • Case 7
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  • Case 8: fabella in the medial head of the gastrocnemius
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