Presentation
Chronic anterior knee pain.
Patient Data
Age: 20 years
Gender: Male
From the case:
Bipartite patella
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AP view of the knee showed a rounded corticated bony fragment in the superolateral aspect of the patella.
Lateral knee x-ray showed a lucent line in the patella.
Fabella is noted.
Case Discussion
Features are characteristic of bipartite patella (type III according to H Saupe classification), a normal variant of the patella. It is usually asymptomatic and only 2% of patients with bipartite patella experience symptoms such as anterior knee pain, especially after trauma like in this case.
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