Lack of association between hypothyroidism and chondrocalcinosis.

The association between hypothyroidism and calcium pyrophosphate dihydrate deposition disease (CPPD) is controversial. We studied the prevalence of chondrocalcinosis, the roentgenographic marker of CPPD by obtaining anteroposterior knee roentgenograms in 49 hypothyroid patients over the age of 40 years, and compared them with knee roentgenograms in 31 euthyroid patients matched for age and sex. Only 2 hypothyroid patients and one euthyroid control had knee chondrocalcinosis. Our results indicate that hypothyroid patients have no greater prevalence of chondrocalcinosis compared to euthyroid subjects. There are also no difference in the degree and prevalence of osteoarthritis between the 2 groups, although hypothyroid patients may have a higher prevalence of periarticular osteopenia.