Abstract
Based on the radiological analysis of 9.464 cases, we carried out a statistical study of intraarticular calcification. In the first study, which was performed in a general hospital in Osaka, there were 3, 305 male and 3, 891 female cases; in the second, performed in a clinic of a neighboring city, there were 719 male and 1, 489 female cases. The frequency of intraarticular calcification was 4.1% in males and 4.4% in females in the first study, and 11.4% in males and 21.4% in females in the second, a significantly higher rate than in the first, especially in females. The difference in the character of the groups is considered to be the main reason for this difference in the results.
The frequency of calcification in both studies was the highest in the knee joint. Calcification of the meniscus, which is characterized as a CPPD deposition disease, was seen in 23.6% of the patients older than 50 years, and the frequency increased with age.
