METS Modular Implants

SMILES Primary and Revision Knee Implants

Introduced in 1991 the SMILES Knee was developed by Professor Peter Walker and is Stanmore Implants' platform knee which provides the surgeon with a choice of fixed or rotating hinged knees.

knee implant photoThe SMILES Knee is supplied as part of the METS modular massive system, Patient Specific massive implants, or as a Patient Specific knee joint.

This enables a variety of solutions for:
  • Effective correction of gross bone defects
  • Stabilisation of the joint following compromise of the collateral ligament structure

The system can be adapted to a very simple rotating hinge for unstable knee joints, or to a more complex rotating hinge knee where there is gross bone loss and/or collateral ligament instability.

We also provide a fixed hinge knee which is suitable for patients with limited mobility or patients with gross instability who require a more stable knee joint.

SMILES Knees are prescribed on a patient-by-patient basis which means that they are tailored precisely to fit the remaining bone stock. Pre-operative planning also allows a huge reduction in instrumentation which is a distinct advantage over modular systems in the OR. A range of tibial and femoral augments can be provided to overcome any unexpected bone loss. This also allows proper re-creation of the joint line and balance of the flexion and extension gap.

The rotating hinge knees are available as a metal cased tibia where augments are required, and as an all-polyethylene tibia which is used when the articular surface of the tibia is in good condition and has had minimal previous surgical intervention.

It is our belief that the more challenging the surgical procedure, the more simple the solution should be. With this in mind our SMILES Knee system requires minimal specialised instrumentation which allows for a clutter-free OR.

  • Failed primary revision knee
  • Femoral/tibial bone loss
  • Unstable knee joint/ ligamentous instability
  • Varus/valgus deformity

To discuss your cases with our design team please contact us by calling +44 (0)20 8238 6500 or using our online form.