What question did this study set out to answer?

To evaluate knee phenotypes before and after total knee arthroplasty performed with neutral mechanical alignment targets, and to evaluate how restoring the Coronal Plane Alignment of the Knee (CPAK) phenotype impacts functional recovery.

June 14, 2024The Journal of ArthroplastyOpen Access

Restoring the Preoperative Phenotype According to the Coronal Plane Alignment of the Knee Classification After Total Knee Arthroplasty Leads to Better Functional Results

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Authors

CPCorentin PangaudAix-Marseille Université RSRenaud SiboniCentre Hospitalier Universitaire de Reims JGJean‐François GonzalezHôpital Pasteur

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Implication

Retrospective cohort study reveals superior functional scores following total knee arthroplasty, indicating that restoring native knee alignment improves outcomes.

Key Points

To evaluate knee phenotypes before and after total knee arthroplasty performed with neutral mechanical alignment targets, and to evaluate how restoring the Coronal Plane Alignment of the Knee (CPAK) phenotype impacts functional recovery.
Retrospective multicenter cohort study evaluating 178 total knee arthroplasties with a minimum follow-up of 2 years.
Surgeries utilized conventional instrumentation aimed at neutral mechanical alignment.
CPAK grade (1 to 9), joint line obliquity (JLO), and arithmetic Hip-Knee-Ankle angle (aHKA) were assessed preoperatively and postoperatively alongside functional outcomes (KOOS, Simple Knee Value, and Forgotten Joint Score).
True neutral mechanical alignment was achieved in 37.1% of knees, isolated JLO restoration occurred in 31.4%, isolated aHKA restoration occurred in 44.9%, and exact CPAK phenotype restoration occurred in 14.6%.
Exact CPAK grade restoration significantly improved the KOOS daily living subscale (79.2 ± 5.3 vs 62.5 ± 2.3; R² = 0.05, P < .05).
Restoring the CPAK grade significantly improved the KOOS quality of life subscale (73.8 ± 5.0 vs 62.9 ± 2.2; R² = 0.02, P < .05).

Cite This Study

Pangaud et al. (2024) studied this question.

synapsesocial.com/papers/6ab491aab5ba52d6b9c032fe https://doi.org/10.1016/j.arth.2024.06.012

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Implication

Retrospective cohort study reveals superior functional scores following total knee arthroplasty, indicating that restoring native knee alignment improves outcomes.

Restoring the Preoperative Phenotype According to the Coronal Plane Alignment of the Knee Classification After Total Knee Arthroplasty Leads to Better Functional Results

Discussion

Member takes

Implication

Key Points

Cite This Study

Restoring the Preoperative Phenotype According to the Coronal Plane Alignment of the Knee Classification After Total Knee Arthroplasty Leads to Better Functional Results

Discussion

Member takes

Implication

Key Points

Cite This Study

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