Garrett Jones

Garrett Jones (photos: A1need profile photo)

The foot is by Ossur’s Vari-Flex® and is low to moderate activity. This foot helps alleviate some of the chatter in the carve and transfers most of the vibration and bumps into the XT9 prosthetic knee.

B1, Foot

XT9 (photo: C1, C2)

The XT9 prosthetic knee is designed by SymbiotechsUSA. The bottom bolt of the shock is set to the most forward hole in the framework of the XT9. This setting, along with the Trunion Mount (red part and screw dial on the shock), mimics able-bodied ankle and knee flexion. Moving the shock down increases the angle of the knee, which then more closely resembles a model able-bodied stance and body alignment for snowboarding. This way of setting the XT9 gives more consistent energy return. This is vital and provides enough resistance when preforming a heal-side turn.

C1, XT9 bottom bolt

C2, Trunion

Pyramid System and Adapter Plates (photo: D1, D2, D3, D4)

There are pyramids alignment systems above and below the XT9 knee. There is a 15º forward lean build into ankle pyramid system. This helps mimic ankle flexion. The pyramid between the top o the aluminum pylon and the XT9 is set at 0º.
There is an extra plate between top of XT-9 and upper pyramid system that extends socket sightly offset/inward/horizontally to accommodate nerve damage and relieve pressure on the inside of the thigh from the socket. It also widens the stance on Garrett’s snowboard.
The pyramid above the plate and XT9 is set at about 10º toward the back. This alignment,along with the ankle pyramid alignment, and the XT9 adjustments help to complete the flexion and extension position that imitates a model able-bodied stance.

D1, Foot-Pylon-Lower Pyramid

D2, Extra plates

Socket (photo: E1)

Garrett is a recent amputee with rather short residual limb; he has been snowboarding on test sockets and continues to break them, so his prosthetist made him a carbon test sock with a waist belt to hold the leg on. When his stump is ready, he hopes to be fit with the Kiss™ suction and strap system because his current suspension system is not enough to hold the leg on while riding.

E1, Socket Leg