How common is Chondrocalcinosis
Cross-sectional studies show that 8% of community-dwelling individuals have CC on knee radiographs (with prevalence increasing to 14% if hand and pelvis films are performed as well;). However, no data exists on how many of those patients have clinically important CPP crystal arthritis. CC is rare before age 50 and increases with age, with up to 30% of the population having CC on x-rays by the ninth decade of life. Asymptomatic CC is the most common clinical presentation of CPPD. In patients with CPPD, the most common sites for finding radiographic CC are the knees and triangular fibrocartilage of the wrists (>90%). Calcifications should be bilateral.
