An elastic bandage provides compression to an injured body part. This helps control swelling and ease pain. A bandage is a good reminder that you have an injury and should not overdo it. The bandage is not sturdy enough to provide a lot of support, so it is possible to re-injure yourself while playing a sport or exercising with an elastic bandage on. You may need a special brace to use during activities or sports. You should continue to use the elastic bandage until the pain and swelling of your injury has gone away .