Skeletal radiology
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Haemophilia disorders are characterised by a blood coagulation anomaly leading to prolonged and excessive bleeding. Imaging provides an essential role in the investigation of both the musculoskeletal and the non-musculoskeletal complications of haemophilia. ⋯ Using our broad experience, we present a multi-modality pictorial review of the musculoskeletal manifestations of haemophilia, including haemophilic arthropathy, intra-muscular haemorrhage and haemophilic pseudotumour. The main imaging features of haemophilic arthropathy are described, including synovial hypertrophy, haemosiderin deposition, sub-chondral cyst formation and loss of joint space.