MIKE DEVLIN / SCIENCE PHOTO LIBRARY MIKE DEVLIN / SCIENCE PHOTO LIBRARY
Collarbone after sports injury. View of the shoulder of a 15 year old boy showing a lump caused by clavicular pseudarthrosis. This boy fractured his clavicle (collarbone) while playing sport. The ends of the fractured bone failed to align correctly during healing, leading to the deformity seen here.
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