MARK THOMAS / SCIENCE PHOTO LIBRARY MARK THOMAS / SCIENCE PHOTO LIBRARY
Hip replacement surgery. Close-up of the hands of surgeons using tools during surgery to replace a patient's hip joint. This is an early stage of the operation, with a cautery tool being used to open up the tissue over the joint. The operation involves removing part of the joint and replacing it with artificial parts (prostheses). Photographed in the UK.
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