[Changes in the patellar articular facet in Blauth's endoprosthetic substitution of the knee joint. Histological and roentgenological studies of 3 patellas].

Three patellae from patients with implanted Blauth knee joint prosthesis were investigated after patellectomy. Radiological findings on sawn sections and macroscopical and histological analysis of the retropatellar surface give evidence of osteoarthritic alterations and inflammation.