firstly i hv to know your age.
If your in your puberty or is still growing, leaving it inside may
harm your elbow.
On the other hand, take note that if you wanna take out tat thingy,
youll hv a scar on your elbow.
i suggest you not to take out that thing. Youll have alot of
trouble, including phsio therapy, and if the wound is long, youll
need to bear the pain and try to tear the wound abit so as to
lenthen your skin, cos its the elbow....., need to bend.