La Revue de médecine interne
-
Avascular necrosis is an ischemic or cytotoxic necrosis of epiphyseal bone, responsible for joint pain, altered life quality and frequently affecting young patients. Avascular necrosis can be unifocal or multifocal, underlining the possibility of a systemic origin. Avascular necrosis involves the femoral head in more than 75% of cases. ⋯ In the earlier stages of the disease (stage I and II of the Arlet and Ficat classification), joint surface is preserved, and conservative treatment is recommended. In the more advanced stages (III and IV of the Arlet and Ficat classification), the articular surface collapses and joint arthroplasty is the main treatment. However, there are some recent therapeutic advances, based on mesenchymal stem cells, which may contribute, in the future, to improve the bad functional prognosis of the disease.
-
Pyoderma gangrenosum (PG) is a neutrophilic dermatosis that is traditionally associated with systemic disorders such as chronic inflammatory bowel diseases, rheumatoid arthritis and malignant hematologic disorders. Its association with systemic lupus erythematosus (SLE) is rare and not well known. We report a case of this association with a review of the literature. ⋯ The prognosis of lupus does not seem to be aggravated by PG and the treatments of a SLE flare are usually enough for treating associated PG.