Hi, thanks for writing to HCM.
This is to just let you know that there is no role for any self care treatment or home remedies
in a case of elbow fracture
An infected elbow joint (as per your description) fracture needs an aggressive form of treatment lest it will result in most unfavourable outcomes.
So, I suggest you to consult an orthopedic surgeon for further management.
Hope this information is helpful. Good day