ArticleArthroplasty (London, England)2025
Predicting postoperative coronal alignment in medial unicompartmental knee arthroplasty using the arithmetic hip-knee-ankle angle.
Article in Arthroplasty (London, England), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Posterior tibial slope accuracy in robotic-assisted TKA: a risk factor analysis focusing on CPAK phenotypes.Journal of robotic surgery · 2026Article
- The coronal plane alignment of the knee classification cannot ignore the joint line convergence angle.BMC musculoskeletal disorders · 2026Article
- The effect of mechanical axis correction on clinical outcomes after unicondylar knee arthroplasty.BMC musculoskeletal disorders · 2026Article
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5 authors.
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Abstract
backgroundProper coronal alignment plays a critical role in the effectiveness of medial unicompartmental knee arthroplasty (UKA). This research seeks to explore the connection between the arithmetic hip-knee-ankle angle (aHKA) and the actual postoperative (postop) HKA angle after undergoing medial UKA.
methodsA retrospective analysis was conducted on individuals who received medial UKA at a specialized orthopedic hospital between January 1, 2024, and July 31, 2024. The aHKA was determined using the formula: medial proximal tibial angle (MPTA) minus lateral distal femoral angle (LDFA), plus 180°. The relationships between the postop HKA angle and the aHKA, MPTA, and LDFA were analyzed. Patients were further divided into three categories based on their postop HKA angle: greater than 180°, between 175° and 180°, and less than or equal to 175°. These groups were then compared in terms of aHKA, LDFA, MPTA, and preoperative HKA angle.
resultsA total of 242 patients (254 knees) were included in this study. The postop HKA was nearly equal to the preoperative aHKA (176.09° ± 2.86° vs. 176.23° ± 3.15°). Statistical analysis revealed a positive association between aHKA and postop HKA angle (R
conclusionThe findings indicate that aHKA has a strong relationship with the postop HKA angle, suggesting its potential as an effective predictor for postop coronal alignment after medial UKA, irrespective of the type of prosthesis used.
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