ArticleBMC musculoskeletal disorders2023
Does mild flexion of the femoral prosthesis in total knee arthroplasty result in better early postoperative outcomes?
Article in BMC musculoskeletal disorders, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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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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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Femoral component sagittal alignment and its influence on short-term outcomes in total knee arthroplasty: a systematic review.BMC musculoskeletal disorders · 2026Pooled it
- Enhancing total knee arthroplasty outcomes: the role of individualized femoral sagittal alignment in robotic-assisted surgery - A randomized controlled trial.Journal of orthopaedic surgery and research · 2024Trial
- Effect of sagittal alignment on patient outcomes following total knee replacement: A systematic review and correlation analysis.Journal of experimental orthopaedics · 2026Review
- Improved alignment and reduced peri-operative blood loss with augmented reality-guided total knee arthroplasty: a single-centre comparative study.Journal of robotic surgery · 2026Article
- Impact of femoral component flexion on gap balancing in varus knees using robotic technology: a comparative study of single-radius and multi-radius designs.Journal of robotic surgery · 2025Observational
- Beyond the coronal plane in robotic total knee arthroplasty-Part 1: Variations in tibial slope and distal femoral flexion do not affect outcomes.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- Influence of Femoral Component Flexion on Outcomes After Primary Total Knee Arthroplasty.Arthroplasty today · 2025Article
Corrections and comments
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Authors and funding
8 authors.
Funding
Abstract
backgroundThe purpose of this study was to measure the femoral prosthesis flexion angle (FPFA) in total knee arthroplasty (TKA) using three-dimensional reconstruction, and to assess the differences in early clinical efficacy between patients with different degrees of flexion.
methodsWe conducted a prospective cohort study. From June 2019 to May 2021, 113 patients admitted for TKA due to osteoarthritis of the knee were selected. The patients' postoperative knee joints were reconstructed in three dimensions according to postoperative three-dimensional computed tomography (CT) scans. The FPFA was measured, and the patients were divided into 4 groups: anterior extension group (FPFA < 0°), mildly flexed group (0° ≤ FPFA < 3°), moderately flexed group (3° ≤ FPFA < 6°) and excessively flexed group (6° ≤ FPFA). The differences in the Knee Society Score (KSS), knee Range of Motion (ROM), and visual analogue scale (VAS) scores were measured and compared between the four groups at each postoperative time point.
resultsPostoperative KSS, ROM, and VAS were significantly improved in all groups compared to the preoperative period. At 1 year postoperatively, the ROM was significantly greater in the mildly flexed group (123.46 ± 6.51°) than in the anterior extension group (116.93 ± 8.05°) and the excessively flexed group (118.76 ± 8.20°) (P < 0.05). The KSS was significantly higher in the mildly flexed group (162.68 ± 12.79) than in the other groups at 6 months postoperatively (P < 0.05). The higher KSS (174.17 ± 11.84) in the mildly flexed group was maintained until 1 year postoperatively, with a statistically significant difference (P < 0.05). No significant difference in VAS scores was observed between groups at each time point.
conclusionsA femoral prosthesis flexion angle of 0-3° significantly improved postoperative knee mobility, and patients could obtain better Knee Society Scores after surgery, which facilitated the postoperative recovery of knee function.
trial registrationChiCTR2100051502, 2021/09/24.
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