[Clinical aspects of reactive arthritis caused by Chlamydia].

The authors compare a multicentered study of chlamydial reactive arthritis with their own personal series of 99 cases consisting of 58 cases of chlamydial reactive arthritis and 41 cases of non-chlamydial reactive arthritis. In the group with chlamydial reactive arthritis, mono-arthritis is more frequent and involvement of the knees, hands, wrists, the sausage appearance of the fingers and toes and heel pain are rarer than in non-chlamydial reactive arthritis. However, the genetic predisposition, in particular the presence of the HLA-B27 antigen, has an essential influence on the clinical features of reactive arthritis.