[Bilateral knee osteoarthritis associated with supracondylar chondromas and popliteal osteochondromas]

The knee is a complicated joint where various diseases can coexist. We present a case of a woman with bilateral knee osteoarthritis who's radiographic follow up allowed a 15 year watch of a bilateral medial supracondylar chondroma and of a popliteal osteochondroma of the both knees. This observation emphasizes the usefulness of repeated radiographs, not only in order to survey the evolution of the knee osteoarthritis but also to disclose the appearance and/or disappearance of other lesions in the neighborhood.