[An unusual form of osteoarthropathy in psoriatric erythroderma]. 
Follow-up study is reported of an unusual osteoarthropathy showing considerable changes in the vertebral column and connected with a psoriatric erythrodermia.  X-ray findings are growing metaplastic ossifications in the capsular ligaments, which are extremely prominent in the regions of shoulder joints and hip joints.  In the vertebral column cervical and lumbal regions are especially attacked and in fibro-ostitis huge metaplastic ossifications of the ligaments develop, which radiologically are very similar to the picture of an ankylopoietic spondylosis.  After long-term therapy with high doses of cortisone the patient developed diabetes mellitus and Cushing-syndrome.  The arising complications soon caused her death.