The diagnosis of chondrocalcinosis is based on typical radiographic findings and synoviaanalysis. We examined 10 patients with chondrocalcinosis to see whether pathognomonic findings of the disease could also be seen by ultrasound. Ultrasound and x-ray findings were compared. Calcifications of the knee menisci were seen by ultrasound in all patients (10/10). Moreover, in three of six patients calcified carpal disci were observed by ultrasound. Joint mouse, exostosis and calcinosis of the capsula could be demonstrated by ultrasound in all instances. In one case the joint mouse was only seen by ultrasound; tomography finally confirmed this diagnosis. Though ultrasound findings in chondrocalcinosis cannot be considered pathognomonic, typical changes of the diseases can be found by this technique. Since ultrasound is a method of increasing interest in rheumatic diseases, those findings may initiate the consideration of the diagnosis.