NexGen® Complete Knee Solution Legacy® Knee Posterior Stabilized (LPS) LPS-Flex Fixed Bearing Knee
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For patients with the ability and desire to perform high-flexion
activities, implant design should not limit postoperative range of
motion. The NexGen LPS-Flex Fixed Knee is designed to
accommodate resumption of high-flexion daily activities. Attention to
patient selection, surgical technique, implant size, and
rehabilitation can help enhance the chances for success. Many activities of daily living require flexion beyond 120 degrees. Consider climbing stairs (75-140 degrees), sitting in a chair and standing up again (90-130 degrees),or squatting (130-150 degrees). 1 The LPS-Flex Fixed Knee extends the NexGen Complete Knee Solution to patients capable of up to 155 degrees of active flexion. |
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Extended posterior condyles on the femoral component facilitate
tibiofemoral contact to support safe high flexion up to 155 degrees.
Conforming geometry of the LPS-Flex Fixed femoral component with its
articulating surface allows minimal loss of contact area during high
flexion. The deep anterior patellar cut-out on the tibial articulating surface helps reduce patellar tension and provide greater clearance for the extensor mechanism. |
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Cam/Spine Mechanism
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A modified posterior stabilized cam/spine mechanism increases
subluxation resistance at high flexion angles.
The fixed bearing articulating surface mates with current NexGen
tibial base plates (available with stem extensions and tibial augments) and
employs the same polyethylene dovetail locking mechanism. Tibial
component implantation uses existing NexGen instrumentation. The LPS-Flex Knee allows use with the NexGen instrumentation system of your choice. |
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References
- Niwa S. Hyperflexion in Japanese knee replacement design and clinical results. Paper presented at: The Wellington Knee Surgery Unit's Eighth International Teaching Meeting; March 5-6, 1998; London, England.
Please refer to the package inserts for complete product information,
including contraindications, warnings, precautions, and adverse effects.
