Jersey finger is titled because this injury occurs in American Football when a player grabs an opponent player’s jersey while the opponent is trying to get away from him. Doing this causes the tip of the finger to extend beyond its normal range, while the rest of the finger is in flexion. This causes the tendon that attaches the finger muscle to the tip of the finger to pull off, or avulse. This results in a fingertip that can no longer flex or bend. Symptoms include a pop or rip sensation in the finger at the time of injury, pain when moving the injured finger and the inability to bend the last finger joint. Tenderness, swelling, warmth, bruising after 48 hours, and an occasional lump is felt in the palm of the finger. The goal of treatment is to repair the pulled off tendon back to the fingertip bone.