(Latin for little bean
) 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. Rarely, there are 2 or 3 of these bones (fabella bi- or tripartita). It is often mistaken for a loose body or osteophyte.
- Duncan W, Dahm D (2003). "Clinical anatomy of the fabella". Clin Anat 16 (5): 448–9.