A bifid rib or bifurcated rib or sternum bifidum is a congenital abnormality occurring in about 1.2% of the population.
Bifid ribs occur in up to 8.4% of Samoans.
The sternal end of the rib is cleaved into two.
It is usually unilateral.
Bifid ribs are usually asymptomatic, and are often discovered incidentally
by chest x-ray.
Effects of this neuroskeletal anomaly can include respiratory difficulties, neurological difficulties, limitations, and limited energy from the stress of needing to compensate for the neurophysiological difficulties.
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