6. Bandage over a splint and not under it.

7. Bandage arms, legs, fingers, etc., in the position the patient is to keep the part in when the bandaging is completed. For instance, bend the elbow to a right angle before putting on the arm bandage. This will be more comfortable for the patient, allowing him to carry the arm easily in a sling and also permit him to use the hand to some extent if the nature of the injury will permit. In bandaging a leg both above and below the knee, the bandage must be put on with a view to the necessary bending of the knee in walking and sitting, if the patient is expected to use the leg.

8. Never apply a wet bandage, as you cannot judge of just how much pressure will be exerted when the bandage dries, because of the shrinkage of cloth with drying; much greater in some cloth than in others.

Kinds of roller bandages:

1. Circular for parts uniform in size, as the body.

2. Spiral for conical surfaces, as fingers or toes.

3. Reverse for more conical surfaces, as arms and legs.

Circular Bandages—Any part of the body which is of uniform size may be covered with a circular bandage. Each turn covers about two-thirds of the previous turn. This holds each turn firmly and prevents slipping and exposing the dressing or wound underneath. Bandage in general direction of the return of the blood to the heart. Fasten the bandage with a strip of adhesive plaster or safety pin. If there is possibility of restlessness or much activity on the part of the patient, it is best to run several narrow strips of adhesive plaster along the whole width of the bandage when finished to prevent possible slipping of the turns of the bandage when the muscles move under it with the activity of the patient. This is especially true of a body bandage.

Spiral Bandage—A conical part, if not too conical, may be covered with a spiral bandage. Each turn ascends at a slight angle, with one edge of the bandage a little tighter than the other. In putting on this kind of bandage it is necessary to learn to have the tight edges all of a uniform pressure and each turn overlap the turn below in such a way that these tight edges make the uniform pressure without regard to the upper edge underneath, which is covered in each turn by the tighter edge of the turn above it.

Reverse Bandages—The reverse bandage is a modification of the spiral one, in order to cover the gapping between spirals which occurs when the surface is very conical, as, for instance, on the leg.