DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Old collarbone fracture. View of the shoulder of a 83-year-old man showing a lump caused by clavicular pseudarthrosis. The patient fractured his clavicle (collarbone) many years previously while playing football. The ends of the fractured bone failed to align correctly during healing, leading to the deformity seen here.
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