Fifty-eight elderly people were surveyed for chondrocalcinosis with knee, hip and pelvic roentgenograms using Type M industrial x-ray film. Chondrocalcinosis was found in 16 subjects (27.6v/,), an incidence greater than reported in previous studies. Roentgenograms of the knees alone showed the presence of chondrocalcinosis in 15 subjects. Varus deformity of the knees, increased wrist complaints and wrist involvement with clinical arthritis were significantly more common in subjects with chondrocalcinosis. Symptoms associated with acute inflammatory arthritis were not more common in people with chondrocalcinosis.In 1958 Zitnan and Sitaj (1) described three patients with both arthritis and characteristic punc-
The prevalence of chondrocalcinosis was studied in 574 hospital and clinic patients aged 50 or older who had undergone x-ray examination of the knee. Chondrocalcinosis was found in 9.6 percent of all these patients, in 5 percent of the 50-64 age group, and in 14.6 percent of the 65-94 age group. The prevalence of knee chondrocalcinosis increased in stepwise fashion between the ages of 65 and 80. A review of the literature and of the data on our few patients over the age of 80 suggests the existence of an even higher prevalence among persons of this advanced age group.
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