What question did this study set out to answer?

This study analyzes postoperative CPAK phenotypes after mechanical alignment total knee arthroplasty and their association with outcomes.

May 4, 2026

Postoperative Coronal Plane Alignment of the Knee (CPAK) Analysis Following Planned Mechanical Alignment: A Comparison of Manual, Computer-Navigated, and Robotic-Assisted Total Knee Arthroplasty.

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This study analyzes postoperative CPAK phenotypes after mechanical alignment total knee arthroplasty and their association with outcomes.
Retrospective review of 636 primary total knee arthroplasties at a single institution.
Procedures used manual instrumentation, computer navigation, or robotic-assisted techniques.
Full-length standing radiographs assessed preoperative and postoperative CPAK phenotypes.
Robotic-assisted techniques significantly improved the odds of achieving neutral JLO (OR 4.3, P < 0.001) and CPAK Type V alignment (OR 2.3, P < 0.001).
Achieving neutral alignment targets did not significantly improve clinical outcomes (P > 0.26).
Postoperative CPAK distribution varied significantly by surgical technology.

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Implication

Retrospective review compares postoperative alignment outcomes in knee arthroplasty using three surgical techniques, suggesting little impact on clinical outcomes.

Cite This Study

Burgio et al. (2026) studied this question.

synapsesocial.com/papers/69f837233ed186a73998134a https://doi.org/10.1016/j.arth.2026.04.087

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Implication

Retrospective review compares postoperative alignment outcomes in knee arthroplasty using three surgical techniques, suggesting little impact on clinical outcomes.

Postoperative Coronal Plane Alignment of the Knee (CPAK) Analysis Following Planned Mechanical Alignment: A Comparison of Manual, Computer-Navigated, and Robotic-Assisted Total Knee Arthroplasty.

Key Points

Discussion

Implication

Cite This Study

Postoperative Coronal Plane Alignment of the Knee (CPAK) Analysis Following Planned Mechanical Alignment: A Comparison of Manual, Computer-Navigated, and Robotic-Assisted Total Knee Arthroplasty.

Key Points

Discussion

Implication

Cite This Study

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