U2 PSA Knee | United Orthopedic Corporation | Hip and Knee Implants


Product Overview

The U2 PSA (Posterior Stabilized Augmentable) Revision Knee system can be used with various augments and extension stems to restore joint stability and address bone loss, allowing surgeons the possibility for an optimal solution for each individual patient.

Product Features

Slide Tibial insert UHMWPE XPE E-XPE XPE Different tibial insert material options are available including standard UHMWPE, XPE (Highly Crosslinked Polyethylene) and E-XPE (Vitamin E Highly Crosslinked Polyethylene). Low constrained type
For intact ligament function and minor bone defects.
Multiple femoral and tibial offsets and stem options are available to help achieve optimal component positioning.
  • Offset adaptor : 2, 4, 6 mm offset
  • Straight stem length: 30, 75, 100, 150, 200 mm
  • Curved stem length: 150, 200 mm
A full range of femoral augment options for bone defects are available
  • Distal & posterior augments: 4, 8 mm thickness
  • Distal augment only: 12, 16 mm thickness
A full range of tibial augment options for bone defects are available
  • Augment thickness: 5, 10, 15 mm

Improved design for optimal function

Enhanced Post-Cam Engagement

Early post and cam engagement (40° flexion) for improved joint stability.

Jump height distance is 21.4 mm to reduce potential for dislocation.

Controlled Femoral Articulation

The femoral component is designed to allow up ± 3.7° of internal/external rotation.

Varus/valgus lift-off is limited to ± 1.4° for increased stability.

Reinforced Femoral Locking Screw

The C-Ring design on the femoral locking screw is intended to prevent loosening/backing out.

Proprietary Tibial Locking Screw

A Built-in reinforcement metal bushing and locking screw within the tibial insert extends into the baseplate. Designed to provide additional structural support and to against shearing force from the femur.

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