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Article

Analysis of CPAK change in robotic functional alignment TKA: a new simplified classification.

Archives of orthopaedic and trauma surgery - 19 Feb 2026

Meftah Morteza, Di Gangi Catherine, Novikov David, Antonioli Sophia S, Meere Patrick, Hepinstall Matthew S

Abstract excerpt

BACKGROUND: The Coronal Plane Alignment of the Knee (CPAK) classification method describes knee phenotypes. The rise in robotic-assisted total knee arthroplasties (RA-TKA) has enabled surgeons to fine-tune bony cuts, minimizing soft tissue release while prioritizing balanced gaps rather than predetermined alignment targets, a technique known as functional alignment (FA). As a patient’s preoperative CPAK changes...

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Aged
Arthroplasty, Replacement, Knee
Knee Joint
Phenotype

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Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

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PMID: 41711963
DOI: 10.1007/s00402-026-06201-x
PMCID: PMC12920351

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 1 Sept 2026.

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