Total Knee Joint Replacement

Knee Implants That Promote Easier Motion^1,2,3

Stryker knee replacements are different than traditional knee replacements because they are designed to work with the body to promote easier motion,^1,2,3 and a study has shown a more rapid return to functional activities after surgery.² This is due to the single radius design of the knee implant. Single radius means that as your knee flexes, the radius is the same, similar to a circle, requiring less effort from your quadriceps muscle.^1,4,6

Because the thigh muscle (the quadriceps) is attached to your knee, it is unavoidably involved in the surgery. Therefore, the quadriceps muscle can become a source of discomfort or pain during your recovery period. The quadriceps muscle plays an important role in your ability to move your legs so it also has a major impact on your recovery and how quickly you can get back to living your life.²

Knee implants designed to last longer⁵
Several factors influence how long an implant will continue to perform. Stryker knees are designed to resist wear in many ways — they use advanced bearing surfaces; they're balanced to help avoid excessive stress in any one spot; and, they're sized to better fit your personal anatomy. X3 Advanced Bearing Technology has demonstrated up to 96% decrease in wear in laboratory testing compared to competitive premium bearing technologies.⁵

Stryker Corporation or its divisions or other corporate affiliated entities own, use or have applied for the following trademarks or service marks: Stryker and X3. All other trademarks are trademarks of their respective owners or holders.

1. Ostermeier, S; Stukenborg-Colsman, C, Hannover Medical School (MHH) Hannover, Germany 'Quadriceps force after TKA — a comparison between single and multiple radius designs," Poster No. 2060 • 56th Annual Meeting of the Orthopaedic Research Society.
2. Harwin, S.F., Hitt, K, Greene, K.A. Early Experience with a New Total Knee Implant: Maximizing Range of Motion and Function with Gender-Specific Sizing Orthopedic Surgery, Surgical Technology International, XVI. pgs 1-7.
3. Greene, K.A. Range of Motion: Early Results from the Triathlon® Knee System, Stryker Literature Ref #LSA56., 2005.
4.Wang, H., Simpson, K.J., Ferrary M.S., Chamnongkich, S., Kinsey, T, Mahoney, O.M., Biomechanical Differences Exhibited During Sit- To-Stand Between Total Knee Arthroplasty Designs of Varying Radii, JOA, Vol. 21, No. 8, 2006.
5. Stryker Orthopaedics Test Report: 06-013.
6. The effect of total knee arthroplasty design on extensor mechanism function, JOA, Vol. 17, Issue 4, June 2002, pp. 416-421.