A double-blind, prospective study of 45 patients with adhesive capsulitis of the shoulder compared the therapeutic efficacy of distensive and nondistensive arthrography in combination with the intra-articular injection of corticosteroids. After 1 and 3 months there was no significant difference between the two treatments in the degree of pain or of limitation of movement experienced by the patients. More than 80% of the patients who experienced pain at rest and nocturnal pain improved under both treatment regimens. Scapulohumeral mobility increased significantly but only partially within the first month of treatment. Articular capacity and the duration of symptoms before treatment were of no prognostic value.