ArticleArthroplasty today2025
Coronal Alignment in Revision Total Knee Arthroplasty: A Comparison of Cemented Vs Press-Fit Stems for Restoring Mechanical Axis.
Article in Arthroplasty today, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
8 authors.
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Abstract
Background: Restoring a neutral coronal alignment in revision total knee arthroplasty (rTKA) is paramount. Stem length and fixation type influence final limb alignment. This study compared overall limb alignment, measured by hip-knee-ankle (HKA) angle, in revisions using short-cemented (<75 mm), long-cemented (>75 mm), and press-fit stems. Secondary aims included evaluating coronal and sagittal alignment of tibial and femoral components and assessing canal fill ratio (CFR) in the press-fit group. Methods: A retrospective multicenter review of 124 rTKAs from January 2019 to January 2022 was conducted. Included cases had revision of both femoral and tibial components using stems, with postoperative weight-bearing radiographs. Patients were divided into 3 groups based on stem type. Radiographic assessments included HKA, mechanical lateral distal femoral angle (mLDFA), mechanical medial proximal tibial angle (mMPTA), and CFR. analysis of variance and chi-square tests were used for statistical analysis. Results: Data from 81 rTKAs were analyzed. Mean HKA was similar across all groups (group A: 178.9°, group B: 178.7°, group C: 178.7°; Conclusions: Short-cemented stems achieved alignment comparable to long-cemented and press-fit stems. Femoral alignment was more variable than tibial. Short-cemented stems provide a flexible option with reliable alignment outcomes.
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