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The KNEO posterior-stabilized implant for TKA: Universal surgical instruments for all knee surgeons

Published in N°008 - November / December 2020
Article viewed 77 times

The KNEO posterior-stabilized implant for TKA: Universal surgical instruments for all knee surgeons

By Charles Henri Flouzat LachanIette in category SURGICAL TECHNIQUE
Henri Mondor Teaching Hospital

When designing a total knee arthroplasty (TKA), there are two factors that will determine the success of the procedure: implant design and instrumentation. Both dictate the surgical technique, but not all instruments allow any surgical philosophy to be used. The KNEO Group has listed 10 key points for the design of a modern TKA...

1. Rationale of KNEO design

When designing a total knee arthroplasty (TKA), there are two factors that will determine the success of the procedure: implant design and instrumentation. Both dictate the surgical technique, but not all instruments allow any surgical philosophy to be used. The KNEO Group has listed 10 key points for the design of a modern TKA and the choices made when developing the KNEO posterior-stabilized implant (Groupe Lépine, Genay, France).1 Based on these key considerations, the KNEO Group has now developed its own posterior-stabilized fixed-bearing total knee prosthesis (Figure 1) and universal instruments, which allow the surgeon to perform his own technique and surgical philosophy.

Figure 1 A. KNEO posterior-stabilized fixed-bearing total knee prosthesis (Groupe Lépine, Genay, France).
B & C. Preoperative frontal and lateral x-rays. D & E. Postoperative frontal and lateral x-rays with KNEO TKA.

 

The KNEO system comprises 11 sizes of femoral and 11 sizes of tibial components and six heights of polyethylene insert. Each insert is compatible with 5 tibial sizes (nominal size ± two sizes). For the tibial component, the decision was taken to produce an asymmetric anatomical implant that would not only offer the benefits of positioning the implant in...

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