The McDavid™ 429 Knee with Polycentric Hinges provides high-level support; improving medial and lateral stability, helping reduce injury and assisting recovery. Bi-lateral geared polycentric hinges provide stability and free movement. Open 360 degree padded buttress isolates and supports the patella.
| Size | Description |
|---|---|
| Small | 33 - 35.6cm |
| Medium | 35.6 - 38.1cm |
| Large | 38.1 - 40.6cm |
| X-Large | 40.6 - 44.5cm |
| XX-Large | 44.5 - 48.3cm |