The elbow joint is quite complex because it is the area of union of three long bones. Elbow pain has many causes including arthritis and bursitis. Tendinitis can affect the inner or outer elbow; the treatment includes ice, rest, and medication for inflammation. Bacteria can also infect the skin of the scraped (abraded) elbow. The funny bone nerve can be irritated at the elbow to cause numbness and tingling of the little and ring fingers.