"The superolateral accessory ossification centre of the patella is usually present by 12 years and may persist into adulthood. Bipartite patella occurs in ~ 2% of the population and is bilateral in ~45% of cases. It is 9 times more common in males than in females 1."
"The Saupe classification describes the bipartite patella according to the location of the secondary ossification centre 2:"
Expected headings
"Classification"
"Related pathology"