[Importance of synoviorthesis using osmic acid in the treatment of hemophilic arthropathy. Apropos of 19 cases]. / Intérêt de la synoviorthèse à l'acide osmique dans le traitement de l'arthropathie hémophilique.

While getting synovial sclerosis and articular drying, the synoviorthesis breaks the circulus vicious which comes from iterative hemarthrosis to articular destruction. With 25 cases and a follow up of 6 years, we have got 39% of good results, 35% of medium and 26% of bad ones. The therapeutic efficiency requires a certain latent time (0 to 15 days for isotopical synoviorthesis, 2 to 3 months for those ones with osmical acid.) A new synoviorthesis can be made if needed. Neither age nor radiological stage are of any influence. The radiological worsening uses to go on unchanged. The synoviorthesis should be performed at an early stage, previous to the cartilage and bone destructions.

[Physiopathology of extrinsic allergic alveolitis]. / Physiopathologie des alvéolites allergiques extrinsèques.

The extrinsic allergic alveolites classically represent the immunological reaction of type III of the lower respiratory tract. In fact, all immunological mechanisms and several non specific factors are involved in these affections. If delayed hypersensitivity (type I) is today considered as part of the disease, the mechanisms involving reagins (type I) are also probably part of it but it is not so evident for type II reactions. Non specific factors are numerous, often hypothetical, because they are still experimental and not all enumerated. The activation of alveolar macrophages, the triggering of the complement system by another way, the enzymes found in dust or the irritation produced by inhaled products are all important factors.