BFY Hinged Knee Orthosis Pull-On — upper and lower leg circumference
Measurement: Circumference 6 inches above the mid knee cap and 6 inches below the mid knee cap. The BFY source lists the upper measurement first and the lower measurement second, in inches.
| Size | 6 inches above mid knee cap (in) | 6 inches below mid knee cap (in) |
|---|---|---|
| S | 18–20 | 13.5–15 |
| M | 20–22 | 15–16.5 |
| L | 22–25 | 16.5–18.5 |
| XL | 25–28 | 18.5–21 |
| XXL | 28–32 | 21–24 |
- Both measurement positions and the inch ranges are published on the exact BFY pull-on product page; this is not a generic measurement guideline.
- The source gives M (21 inches / 15.5 inches) as an upper/lower measurement example.
- Adjacent ranges share endpoints. The source does not specify a boundary rule or which measurement takes priority when the two suggest different sizes.
- Original inch units are retained without conversions.


