Fracture of the patella is relatively common, accounting for approximately 1% of all fractures. Trauma is a common reason for the fracture; pathologic fracture of the patella, including infections, tumors, degenerative conditions, and metabolic disorders, is much less common. Gout tophi are often found in the auricular cartilage or in the big toe, but rarely in the patella. As far as we are aware, few papers have reported that tophi sometimes induce pathological patella fracture, because deposition of crystals in joints and bones leads to arthritis and subsequent bone destruction [1-4].
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