[X-ray examination of the sterno-manubrial joint in ankylosing spondylitis and Reiter's disease (author's transl)].

In 19 patients with ankylosing spondylitis, 11 presented some lesions of the manubrio-sternal joint. In 3 cases these lesions were more advanced than the sacro-iliac alterations which were very slight or even doubtful. In 8 patients with severe Reiter's disease, 7 developed an ankylosing spondylitis and 2 presented involvement of the manubrio-sternal joint 8 weeks, respectively 10 weeks after the appearance of the first symptoms.