[Indications, technic and dangers of intra-articular injection treatment of the knee].

The indication for knee injection depends on the drugs to be used and the illness to be treated. These are lot of degenerative and inflammatory joint pains which demand for monarticular treatment by corticosteroid crystal suspension, local anaesthetica, non-steroidal antiinflammatory substances or drugs for chemical synovectomy in PCP. The technique is quite easy as for the big volume and the broad entrance of the articular space when the knee is flexed. The demand of hygienic circumstances must content a handling which prevents infection by quite simple methods by local antiseptics for the skin and one-way instruments. With the seldom exception of haemarthros and osteochondral necrosis infection is the utmost danger of knee injection. The putride arthritis should be managed by early synovectomia and movement trauma in order to limit infection and prevent ankylosis. Nevertheless, in case of empyema half of the joints will not regain their pre-existent movement and nearly a quarter loses their natural function.