A study of the incidence of articular chondrocalcinosis in Paget's disease of bone.

Amongst 66 pagetic patients, whose average age (median) was 76 years, 9 cases of ACC were found. This represents an incidence of 13.6% of the whole group. Of 72 control subjects, whose average age (median) was 73 years, 7 were found to have ACC. This represents an overall incidence of 9.7% of the control group, but the difference is not statistically significant. From this study we conclude that ACC does not occur more frequently in Paget's disease than in a group of control subjects with the same age distribution.