What type of measurement is critical when sizing a knee-high TED?

When sizing a knee-high TED (thromboembolic deterrent) stocking, leg circumference is the critical measurement because it ensures that the stocking fits properly and provides the necessary compression. Proper compression is essential for the effectiveness of TED stockings, as they are designed to promote venous return and prevent complications such as deep vein thrombosis (DVT).

Measuring the leg circumference allows for an accurate fit around the widest part of the leg, ensuring that the stocking provides adequate support and does not lead to discomfort or further issues. This measurement typically focuses on specific points such as the calf or thigh depending on the style of the stocking, but leg circumference in general encompasses the necessary considerations for achieving the correct size and level of compression.