Zimmer® NexGen® LPS-Flex Mobile and LPS-Mobile Bearing Knees

Replicate natural kinematics with an All Terrain Knee featuring the anterior pivot

A Move Forward in Mobile Bearing Knee Design

The LPS-Flex Mobile Bearing Knee provides an anteriorly positioned pivot near the entry point of the anterior cruciate ligament (ACL).

  • An anterior pivot at the ACL site replicates the anatomic center of rotation.1,2
  • Anterior pivot design leads to lower patellofemoral forces that lead to anterior knee pain, patellar subluxation and dislocation, and component wear, damage, and loosening.3,4
  • An anterior stop on the tibial plate prevents bearing spin-out and allows 25° of internal/external rotation
LPS-Flex Mobile Bearing Knee

Accommodating Safe High Flexion

  • The extended posterior flange of the LPS-Flex Mobile Bearing Knee safely accommodates tibiofemoral contact during deep flexion of 155°.
  • A deepened patellar groove facilitates patellofemoral tracking and relieves pressure on the patella, reducing forces that can cause premature wear.
  • An anterior cut-out on the articulating surface reduces extensor mechanism tension and provides greater clearance for the patellar tendon during deep flexion

Enhanced PS Cam/Spine Mechanism

  • Increases subluxation resistance at deep flexion angles.
  • Proportionally sized anchoring pegs on the femoral component provide additional stability.

Minimally Invasive Procedures

  • Innovative, minimally invasive TKA techniques help improve patient outcomes.
  • MIS Instrumentation facilitates accurate, repeatable bone cuts.
  • Benefits include smaller incisions, less blood loss, and less pain. 

Choice of Zimmer Instruments

  • MIS NexGen Multi-Reference® 4-in1 Instrumentation System
  • MIS Intramedullary Instrumentation System.
  • Can make the mobile or fixed bearing decision intraoperatively.

With a successful clinical history, MIS Procedure compatibility, and safe high flexion up to 155°, the mobile bearing knee with an anterior pivot can deliver more normal knee kinematics for your patients. It's a natural knee choice, naturally from Zimmer.

References

  1. Scuderi G.R. et al. In vivo kinematic evaluation and design considerations related to high flexion in total knee arthroplasty. Journal of Biomechanics. Number 38, pp 277-284. 2005
  2. Hollister A.M. et al. The Axes of Rotation of the Knee. Clinical Orthopaedics and Related Research. Number 290, pp 259-268. 1993
  3. Smith A.J. et al. Pre-surgery knee joint loading patterns during walking predict the presence and severity of anterior knee pain after total knee arthroplasty. Journal of Orthopaedic Research. Number 22, pp 26-266. 2004
  4. Browne C. et al. Patellofemoral forces after total knee arthroplasty: effect of extensor moment arm. The Knee. Number 12, pp 81-88. 2005