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Annotation

Not all knees are the same

using the Coronal Plane Alignment of the Knee (CPAK) classification to understand imbalance in mechanically aligned total knee arthroplasty



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Abstract

The aim of mechanical alignment in total knee arthroplasty is to align all knees into a fixed neutral position, even though not all knees are the same. As a result, mechanical alignment often alters a patient’s constitutional alignment and joint line obliquity, resulting in soft-tissue imbalance. This annotation provides an overview of how the Coronal Plane Alignment of the Knee (CPAK) classification can be used to predict imbalance with mechanical alignment, and then offers practical guidance for bone balancing, minimizing the need for soft-tissue releases.

Cite this article: Bone Joint J 2024;106-B(6):525–531.


Correspondence should be sent to Samuel J. MacDessi. E-mail:

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