HLA-B27 in Turkish patients with rheumatoid arthritis.

The patient was initially treated bv skull traction, with some reduction of the subluxation. Two weeks later he underwent atlantoaxial fusioni with interlaminar wiring. Clinical improvement was graduals but by three months there was sound fusion and a full neurological recovery except for minor ankle clonus. The exact pathology of atlantoaxial subluxation in psoriatic arthropathy is uncertain, but it is likely that an inflammatory arthritis with soft tissue involvement and synovial proliferation in the synovial joints around the odontoid peg results in degeneration of the adjacent transverse ligament. It is not certatin whether pannus plays any part in the compression. as occurs in rheumatoid