Spondylodiscitis and pseudarthrosis in a patient with enteropathic spondyloarthropathy.

Bath medallion reproduced with permission of the Royal National Hospital for Rheumatic Diseases, Bath. The seronegative spondyloarthropathies consist ofa group ofdisorders which includes idiopathic (primary) ankylosing spondylitis, juvenile ankylosing spondylitis, reactive arthritis (or Reiter's syndrome), psoriatic arthritis, and spondylitis of inflammatory bowel disease (enteropathic spondyloarthropathy). The underlying features of these disorders include a predilection to enthesopathy and spinal arthritis, with sacroiliac joint involvement as well as peripheral arthritis. Extra-articular involvement of the eye, heart, mucous membrane, and skin may occur. In addition, there is strong familial aggregation and a striking association with class I antigen HLA-B27.1 2 Chronic inflammation affecting the spinal