Bipartite patella - bilateral

Case contributed by Bahman Rasuli
Diagnosis almost certain

Presentation

Chronic knee pain.

Patient Data

Age: 55 years
Gender: Male
x-ray

Well corticated bony fragments in the superolateral aspect of both patellae.

Joint space narrowing with subchondral sclerosis predominantly involving the medial tibiofemoral and lateral patellofemoral compartments.

Marginal osteophyte formation. 

There is varus deformity at the knee.

Case Discussion

Features are characteristic of the bilateral bipartite patella as a normal congenital variant.

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