If you have a rod in your femur that was installed to treat fracture, removing this is critical and needs careful reconsideration. The decision to take out the rod is generally made based on whether or not your bone has healed, if there are no complications and how good you have been feeling health wise. Talk to an orthopedic surgeon as they can assess if the removal is necessary and what risks it might carry. Healing will take place after rod removal, which may improve function and reduce pain in many people. However, the recovery process largely depends on bone condition and tissues surrounding it. So it is essential to consult some health care specialist who will give you parametrically applicable advice after the specific case has been carefully reviewed and medical history taken into consideration.

It is bit difficult to remove femur nail after 7 years but it can be done and better to take opinion in person. Yes this will heal after removal. 

Next step: consult orthopaedic surgeon doctor