Venous compression

Pressure and compression classes

Compression pressure may be expressed in millimetres of mercury. A class refers to a pressure convention whose boundaries can vary between countries. Class numbers therefore cannot be compared without knowing the relevant framework. Graduated compression also describes a pressure distribution along the limb; it cannot be inferred from colour or the apparent thickness of the fabric. These concepts differ from garment size. Identifying each separately gives a clearer technical description without specifying an individual therapeutic pressure.

Coverage and textile construction

A knee-high sock, thigh-length stocking and pair of tights cover different areas. Open or closed toes, upper edges and retention structures add further geometry. Knit construction and associated fibres may differ between devices. Similar colour or texture does not establish the same pressure characteristics. Functional specifications therefore remain distinct from appearance. A change in height is also more than a cosmetic variation because the textile covers different portions of the limb within its declared construction.

Measurements and comparison limits

Circumferences and lengths correspond to measurement points defined for the model. A letter size is not a universal measurement. Medical compression devices differ from comfort garments and other elastic textiles through their documented purpose and characteristics. Pressure selection and assessment of compatible situations belong to healthcare professionals. This category explains equipment without specifying an indication, wearing duration or reimbursement condition. The material description remains useful while preserving the distinction between a technical specification and an individual clinical decision.

Frequently asked questions