Retention bandages

Retention and cohesion

A cohesive bandage attaches mainly to itself through its construction or coating. That differs from an adhesive bandage intended to adhere directly to skin. A non-cohesive retention bandage may instead require a separate fastening component. Adhesion, cohesion and stretch are therefore different specification points. Knowing which property is being described prevents a familiar word such as self-adherent from obscuring the actual function of the material and the way the complete retention assembly is constructed.

Width and the meaning of roll length

Width describes the coverage offered by each turn of material. Length may be stated at rest or after stretching, so two figures cannot be meaningfully compared without that information. A stretch percentage describes elongation rather than a therapeutic compression class. Tubular constructions also differ from an open roll: they have their own geometry and sizing conventions. Resting and stretched lengths describe different states of the material, which is particularly relevant when comparing rolls with different elongation characteristics.

Distinguishing retention from compression

The ability to hold a dressing does not establish a defined therapeutic pressure. Compression bandages have different characteristics and remain a separate category. For retention materials, useful distinctions include cohesion, flexibility, fibre composition and any material restrictions. The presence or absence of latex and the declared sterile status belong to the individual presentation. None of these properties can be assumed for every bandage in the family merely because it is stretchable or supplied on a similar roll.

Frequently asked questions