This will also reduce swelling that can add to the discomfort of the injury. Take care not to apply ice or cold packs directly to the skin while treating dislocations or damage to the skin could result; make sure you wrap the pack in a towel first. Apply ice for no longer than 10 – 20 minutes at a time. Follow the recommended dosages on the bottle. Both of these medications are available over-the-counter at your local drugstore or pharmacy. Once the injured person gets to the hospital, medical staff will re-align the bones around the joint. This procedure is called "reduction." Often it requires the patient to be under partial sedation as it can be quite painful (however, in the long run, it diminishes pain by speeding recovery).  The doctor will then immobilize the joint for several weeks. He will be sure to immobilize it in the correct position, after everything has been re-aligned, and your body will naturally heal things from here. Sometimes surgery is needed if your doctor cannot re-align the bones around the joint manually. In this case, the joint will be immobilized after surgery. Physical therapy usually takes a number of weeks and helps the patient regain range of motion in the joint. It also helps strengthen the muscles surrounding the joint so a subsequent injury is less likely. Only begin using the limb according to your doctor’s instructions.

TL;DR in Vietnamese:
Giảm đau xung quanh vùng trật khớp bằng túi chườm lạnh. Dùng thuốc Ibuprofen (Advil) hoặc Acetaminophen (Tylenol) nếu đau đớn dữ dội. Chuẩn bị cho việc điều trị. Bắt đầu tập luyện khi các khớp có thể hoạt động lại.