What are Montgomery straps used for?

The use of Montgomery straps is recommended to prevent skin breakdown with frequent dressing changes. They limit the friction and shear that could irritate skin with frequent removal and application of tape. Physically, Montgomery straps have holes on one side (where it is NOT sticky) for tying (with string) to another Montgomery strap's holes, where both straps are taped on either side of the wound. In other Words, Montgomery straps are "sticky" on one side where they attach to skin, and are not sticky on the other end where they cover and hold the bandage in place by attaching via string to another Montgomery strap. It takes two Montgomery straps to hold the bandage in place. With this setup, you can change the dressing without having to remove/change the tape. The tape stays in place during dressing changes. It's sort of like a corset with the bandage under the draw strings, where the body of the corset is sticky, but not sticky where the holes are for drawing the corset tight. Hence you are able to change the bandage without removing the tape. You just untie the strings, change the bandage, and retie the strings to hold the bandage in place.