Product Summary: The XT9© is a specially designed prosthetic knee engineered for extreme athletic use. It has been in testing and development since 1997.  The XT9 has one of the highest strength ratings while remaining one of the lightest knees on the prosthetic market. Specifications: Dimensions: 8.259" H x 3" W Weight: 32 oz (907.18 grams) User weight: Up to 295 lbs (134 kg) Uses: High activity, all conditions, all terrains

The XT9© is unlike any other prosthetic knee on the market. It is the only prosthesis designed for amputees to participate in sports such as:

Telemark skiing, Alpine skiing,
Cross-country skiing, Waterskiing,
Wakeboarding, Snowboarding, Surfing
Skateboarding, Rock climbing,
Ice climbing, Motocross, Rollerblading
Ice hockey, Ice skating
...and more!

· The XT9© is fully adjustable for differing user weight, aggressiveness and activity.

· The XT9© is durable and lightweight.

· The XT9© is 100% corrosion resistant and is made to endure extreme climates including cold weather, water, sun and dirt.

· The XT9© is the only prosthetic knee of its kind, offering a large range of uses at an incredible price!

· The XT9© comes with the best warranty in the industry! Full lifetime warranty against manufacturing defects in workmanship and materials, plus a 2.5 year limited warranty for wear and tear.

How it works

The XT9 High Activity Knee functions differently than any other knee.  It is the only AK prostheses that mimics the functions of the quadriceps in high activity sports.  The XT9's specialized "coil over air" shock system/control unit makes the XT9 the only 'energy storing' prosthetic knee on the market.  As the pressure is applied to the limb, the knee bends, compressing over 400 pounds of energy in the coil spring and air shock.  This spring and shock tension, combined with hydraulic flexion control, act supportively as the quadriceps would in a sporting situation.  The knee is allowed to bend until it comes to a rest against the titanium hard stops, at which point the energy that has been built up and stored in the spring system is ready to release, returning the athlete to a ready stance.
In activities such as snowboarding, which have often been impossible for amputees to enjoy with an artificial limb, the XT9 works naturally providing constant support and dynamic flexion as the rider turns, absorbs bumps and rough terrain, and even performs jumps and tricks.
The heavy duty support which the XT9 knee offers an amputee is what allows so many high energy sports to now be enjoyed.  The XT9 High Activity Knee has adjustable stance which allows the user to set an active stance which suites his or her activity and level of ability.  Unlike other prosthetic knees, the XT9 is capable of supporting the user in a activity stance and works dynamically as a natural limb would do.

The XT9 Prosthetic Knee is made to the highest standards possible. It is the only high activity knee that is warranted for water use and high impact from extreme sports!  Each piece of the limb is CNC machined from aircraft grade T6 aluminum alloy, stainless steel and high strength titanium.  That makes this prosthesis one of a kind and a new leader in its field.

All aluminum parts on the XT9 prosthesis are anodized to military spec. “Mil-A-8625 Type 2 Class 2” giving them ultimate corrosion resistance, toughness against abrasion and an overall aesthetically pleasing finish.  This process is just part of what protects the XT9 against corrosion and helps make it the first water proof, high activity artificial limb on the market.  Other prosthetic knees made for water are not durable enough for other sports.

All components of the XT9© are anodized aluminum, titanium and stainless steel. It is the only high activity prosthesis designed to endure use in all conditions.  The double sealed, needle bearings in the knee ensure long lasting performance and help make the XT9 a low profile knee while maintaining the highest standard for advanced prosthetics.

The XT9’s design and purpose make it an extremely versatile and revolutionary prosthetic leg. Amputees are using this limb to accomplish things that were once never dreamed of with an artificial limb!