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Background <p>In the context of rising numbers in primary total knee arthroplasty, alternative insert designs are being established, which are supposed to show superior results in terms of knee joint kinematics, clinical results and long-term survival in comparison to the traditional cruciate retaining or posterior stabilized insert designs.</p> Medial pivot <p>The medial pivot design presents equivalent results to the cruciate retaining design with presumed superiority combined with kinematic alignment.</p> Dual pivot <p>Current data for the dual pivot design is still very limited. A&#xa0;benefit in comparison to traditional insert designs has not yet been demonstrated.</p> Ultracongruent <p>Forthe ultracongruent design, similar clinical results and revision rates as for the posterior stabilized design have been shown so far, but a&#xa0;superiority in this respect cannot be indicated.</p> Bicruciate retaining <p>The bicruciate retaining design does not present as a&#xa0;meaningful alternative to the traditional insert designs due to a&#xa0;more challenging surgical technique and significantly increased revision rates based on aseptic partial loosening.</p>

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Medial Pivot, Bicruciate Retaining und Co.: Evidenz moderner Inlay- und Prothesendesigns

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Johanna-Maria Simon,
  • Philipp von Roth

摘要

Background

In the context of rising numbers in primary total knee arthroplasty, alternative insert designs are being established, which are supposed to show superior results in terms of knee joint kinematics, clinical results and long-term survival in comparison to the traditional cruciate retaining or posterior stabilized insert designs.

Medial pivot

The medial pivot design presents equivalent results to the cruciate retaining design with presumed superiority combined with kinematic alignment.

Dual pivot

Current data for the dual pivot design is still very limited. A benefit in comparison to traditional insert designs has not yet been demonstrated.

Ultracongruent

Forthe ultracongruent design, similar clinical results and revision rates as for the posterior stabilized design have been shown so far, but a superiority in this respect cannot be indicated.

Bicruciate retaining

The bicruciate retaining design does not present as a meaningful alternative to the traditional insert designs due to a more challenging surgical technique and significantly increased revision rates based on aseptic partial loosening.