Removed intramedullary rod

An intramedullary rod, also known as an intramedullary nail (IM nail) or inter-locking nail or K√ľntscher nail (without proximal or distal fixation), is a metal rod forced into the medullary cavity of a bone. IM nails have long been used to treat fractures of long bones of the body. [Source: Wikipedia ]

May Cause
Split cortex