Measure your knee joint width when the leg is in an even, weight bearing (straight leg) position. Use the following table as a guide to arrive at the brace size for your leg.
Size
(Left or Right)
Joint Width
(Inches)
Joint Width
(Centimeters)
Small
3 3/8"- 4"
8.5 – 10.0 CM
Medium
4"- 4 1/2"
10.0 – 11.5 CM
Large
4 1/2"- 5 1/8"
11.5 – 13.0 CM
X-Large
5 1/8"- 5 1/2"
13.0 – 14 CM
This sizing chart is provided only as a guide. Use the brace size that is most
comfortable for you.