Trial reportOrthopadie (Heidelberg, Germany)2023
[Knee flexion after hospitalisation is no predictor for functional outcome one year after total knee arthroplasty].
Trial report in Orthopadie (Heidelberg, Germany), 2023. 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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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
3 citing papers in PubMed.
- Comment on "Early radiological outcomes of imageless robotic-assisted total knee arthroplasty with VELYS: a comparative study of CPAK varus vs. valgus phenotypes".Journal of robotic surgery · 2025Article
- The role of high knee range of motion at discharge on functional outcome after total knee arthroplasty: a retrospective cohort study.BMC musculoskeletal disorders · 2025Article
- Article
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Authors and funding
3 authors.
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Abstract
objectiveIn total knee arthroplasty (TKA), range of motion has become established as an important factor. The criterion of quality is set to flexion of 90° after hospitalisation. Currently, it is supposed to be a predictor for 1‑year postoperative outcome. However, as this correlation has not been proven, this clinical trial was performed.
methodsA total of 182 TKA recipients were analysed retrospectively. Outcomes were assessed before surgery, after hospitalization, 6 weeks and 1 year post surgery. They included knee range of motion (ROM) to answer the main hypothesis, but also KSS, SF-36, WOMAC, EQ-5D and VAS to evaluate knee function and quality of life. The patients were divided into two groups differing in achieving 90° flexion after hospitalisation and compared 6 weeks and 1 year after surgery.
resultsKnee flexion differed significantly between groups from 91 to 70° in the group without the aim of 90° flexion after hospitalisation (E) (p < 0.001). After 6 weeks, flexion was improved to 112° ± 13° (E > 90°) vs. 106° ± 14° (E < 90°; p = 0.001). One year post surgery, knee flexion averaged 122° ± 10° (E > 90°) vs. 120° ± 10° (E < 90°) with no difference between the groups (p = 0.57) and no significant difference in all other scores concerning knee function and quality of life.
conclusionFlexion of 90° after hospitalisation is not adequate to predict medium-term outcomes after TKA. There is no advantage or disadvantage regarding whether the aim of 90° flexion is achieved.
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