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Fabella is the small calcification appearing back of femoral condyles
Latin Os fabella
FMA 281591
Anatomical terminology

The fabella (Latin for little bean) (or flabella) is a small sesamoid bone found in some mammals embedded in the tendon of the lateral head of the gastrocnemius muscle behind the lateral condyle of the femur. It is a variant of normal anatomy and present in humans in 10% to 30% of individuals.[1] Rarely, there are 2 or 3 of these bones (fabella bi- or tripartita). It can be mistaken for a loose body or osteophyte.

The fabella is a standard finding on radiographs of the dog and cat, and both medial and lateral fabellae are typically present.[citation needed]

See also[edit]


  1. ^ Luijkx, Tim; Knipe, Henry. "Fabella". Radiopaedia. Retrieved 2015-09-18. 

External links[edit]