Osteolysis of the distal clavicle

Osteolysis is an active resorption of bone matrix by osteoclasts and can be interpreted as the reverse of ossification. Although osteoclasts are active during the natural formation of healthy bone the term "osteolysis" specifically refers to a pathological process. [Source: Wikipedia ]

May Cause
Osteolysis
May Be Caused by
Athletic activity
Manual labor