Tendon calcifications of the hip adductors in chondrocalcinosis: a radiological study of 75 patients.

Studies on tendon involvement in articular chondrocalcinosis (ACC) are scarce, with little data focusing on its prevalence and characteristics. We carried out a radiological survey on 75 patients with ACC in order to establish the frequency and radiological appearance of calcific deposits at the origin of the adductor tendons on the ischium. In 19 of these patients, radiological visible linear calcifications compatible with chondrocalcinosis were observed at this site. There is a high correlation between the existence of pelvic tendon calcifications and the extension and intensity of calcific deposits in other articular areas. Calcifications of the adductor tendons are not uncommon in ACC, the amount of calcium pyrophosphate deposits may be the most important factor leading to tendon involvement in this disorder.