Fig. 3From: Two phenotypes of chronic recurrent multifocal osteomyelitis with different patterns of bone involvementVertebral and sacroiliac involvement. HLA-B27 positive children with CRMO displayed sacroiliac involvement less frequently than spinal involvement. Vertebral lesions were twice as frequent as in the cohort. Sacroiliitis in HLA-B27 positive CRMO was less frequent than sacroiliitis in HLA-B27 negative CRMO children and in non-selected CRMO childrenBack to article page