ANTONIA REEVE / SCIENCE PHOTO LIBRARY ANTONIA REEVE / SCIENCE PHOTO LIBRARY
Knee replacement surgery. Close-up of an operation being carried out to replace an artificial knee joint that failed due to an obese patient's weight. At centre is the 'tray' tibial implant component of the knee joint, with the 'hinge' femoral implant component above it. A retractor (lower right) is being used to pull back layers of skin and fat (yellow). For a sequence showing an X-ray and photographs of the operation, see images C014/7729 to C014/7735.
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