Presentation
Known case of ankylosing spondylitis underwent left total hip replacement and complains of increasing back pain
Patient Data
Complete fusion of both sacroiliac joints, erosion of the symphysis pubis and typical features of ankylosing spondylitis of the spine including shiny corner, dagger sign and bamboo spine. Destruction of the left hip joint required total hip replacement
Case Discussion
Ankylosing spondylitis is a seronegative spondyloarthropathy (HLA B27 positive) that mainly affects the axial skeleton including the spine and sacroiliac joints. Appendicular skeleton involvement usually occurs at the hip, knee, hands and shoulder. Extraskeletal manifestations include iritis, aortic valve insufficiency, inflammatory bowel disease and upper lobe pulmonary fibrosis.
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