SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Coloured Magnetic Resonance Imaging (MRI) scan in front view of the hip of a male patient aged 68, showing osteonecrosis (bone death) of the thigh bone. The head of the femur (thigh bone, at centre right) reveals a dark area of necrosis where it articulates with the hip joint. This tissue death is caused by an impaired blood supply which may have resulted from an injury or disease.
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