Varus-valgus constrained implants in total knee arthroplasty: indications and technique

Varus-valgus constrained implants in total knee arthroplasty: indications and technique

Authors

  • Paolo Adravanti
  • Sebastiano Vasta

Keywords:

varus-valgus constrained, semi-constrained, constrained non-linked, TKA

Abstract

Total knee arthroplasty is a successful operation that significantly improves patient’s quality of life. However, studies demonstrated as only 82% to 89% of patients are satisfied with their surgery, being the other disappointed with regard to their expectations. Two to 5.7% of total knee arthroplasties (TKAs) require revision within 5 years. Both complex primary cases and revision TKA often necessitate for a higher degree of constrain than cruciate retaining or postero-stabilized implant design. In the 1970s varus-valgus constrained (VVC) or semi-constrained implants have been developed by Insall and associates from the PS design, which provide varus-valgus stability preserving a fair amount of host bone. VVC TKAs allows for a small amount of movement in the coronal, antero-posterior and axial planes. In this paper, the authors give an overview of the indications, outcomes and technique for varus-valgus constrained implants, both in the setting of primary and revision knee arthroplasty.

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Published

07-06-2017

How to Cite

1.
Adravanti P, Vasta S. Varus-valgus constrained implants in total knee arthroplasty: indications and technique. Acta Biomed [Internet]. 2017 Jun. 7 [cited 2024 Jul. 17];88(2 -S):112-7. Available from: https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/6521