DonJoy Knee Brace Size Guide (Off‑the‑Shelf)
Measure thigh circumference 6″ above knee center and calf circumference 6″ below knee center. Use Knee Center at mid‑patella. If between sizes, choose the larger size.
| Size | Thigh (in / cm) | Knee Center (in / cm) | Calf (in / cm) |
|---|---|---|---|
| XS | 13 – 15.5 / 33 – 39 | 12 – 13 / 30.5 – 33 | 10 – 12 / 25.5 – 30.5 |
| S | 15.5 – 18.5 / 39 – 47 | 13 – 14 / 33 – 35.5 | 12 – 14 / 30.5 – 35.5 |
| M | 18.5 – 21 / 47 – 53.25 | 14 – 15 / 35.5 – 38 | 14 – 16 / 35.5 – 40.5 |
| L | 21 – 23.5 / 53.25 – 59.5 | 15 – 17 / 38 – 43 | 16 – 18 / 40.5 – 47 |
| XL | 23.5 – 26.5 / 59.5 – 67.25 | 17 – 19 / 43 – 48.25 | 18 – 20 / 47 – 50.75 |
| XXL | 26.5 – 29.5 / 67.25 – 75 | 19 – 21 / 48.25 – 53.25 | 20 – 22 / 50.75 – 56 |
| XXXL | 29.5 – 32 / 75 – 81.25 | 21 – 23 / 56 – 61 | 22 – 24 / 53.25 – 58.5 |