The Journal of Bone and Joint Surgery, Vol 66, Issue 9 1379-1380, Copyright © 1984 by Journal of Bone and Joint Surgery, Inc
The incidence of fabellae in osteoarthrosis of the knee
JW Pritchett
I examined radiographs of the knees of 600 men to determine the incidence
of fabellae in radiographically normal knees as compared with knees with
primary osteoarthrosis. At least a unilateral fabella was present in 106
(35 per cent) of 300 patients with primary osteoarthrosis of the knee. In
an age-matched group of 300 patients with radiographically normal knees,
only forty-four (15 per cent) had a fabella. The presence of a fabella may
represent an atavistic pattern, and the fact that knees with primary
osteoarthrosis are more likely to contain a fabella raises the question of
whether an atavistic pattern predisposes a knee to osteoarthrosis.
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