ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2018
Patient-reported outcome metrics following total knee arthroplasty are influenced differently by patients' body mass index.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 2 of them syntheses 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
30 citing papers in PubMed, 2 syntheses or guidelines pooled it, 49 citations in OpenAlex.
- Identification of Metabolic Factors and Inflammatory Markers Predictive of Outcome after Total Knee Arthroplasty in Patients with Knee Osteoarthritis: A Systematic Review.International journal of environmental research and public health · 2023Pooled it
- Mild radiographic osteoarthritis is associated with increased pain and dissatisfaction following total knee arthroplasty when compared with severe osteoarthritis: a systematic review and meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Pooled it
- Factors contributing to 1-year dissatisfaction after total knee arthroplasty: a nomogram prediction model.Journal of orthopaedic surgery and research · 2022Trial
- Higher body mass index is associated with larger postoperative improvement in patient-reported outcomes following total knee arthroplasty.BMC musculoskeletal disorders · 2021Trial
- Mechanically aligned total knee arthroplasty demonstrates acceptable outcomes in obese patients, with insufficient evidence for alternative alignment strategies: A systematic review.Journal of experimental orthopaedics · 2026Review
- Evaluating Patient Satisfaction Outcome After Total Knee Arthroplasty Done at Our Hospital's Joint Replacement Registry, Egypt.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2026Observational
- The Rollercoaster of Recovery: Changes in patient satisfaction after total knee arthroplasty in the prospective FInGK study.Orthopedic reviews · 2026Article
- The Effect of Obesity on Simultaneous Bilateral Knee Arthroplasty Surgery.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2025Article
- No clinical relevant differences in early clinical outcomes, patient satisfaction and objective gait and posture analysis between a custom versus off-the-shelf total knee arthroplasty: a prospective controlled study.Archives of orthopaedic and trauma surgery · 2025Article
- Phase angle and extracellular edema predict risk of postoperative complications in total joint arthroplasties.Journal of electrical bioimpedance · 2025Article
- Comparative analysis of patient-reported outcomes in total knee arthroplasty and total hip arthroplasty: adjusting for demographic influences.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024Article
- Association between Obesity and Short-Term Patient-Reported Outcomes following Total Knee Arthroplasty: A Retrospective Cohort Study in Japan.Journal of clinical medicine · 2024Article
- The effect of body mass index and preoperative weight loss in people with obesity on postoperative outcomes to 6 months following total hip or knee arthroplasty: a retrospective study.Arthroplasty (London, England) · 2023Article
- Does diabetes mellitus impair the clinical results of total knee arthroplasty under enhanced recovery after surgery?Journal of orthopaedic surgery and research · 2023Article
- Article
- The influence of obesity on functional outcomes and patient satisfaction 8 weeks after total knee arthroplasty: results of the prospective FInGK study.BMC musculoskeletal disorders · 2022Article
- Effect of body mass index on duration of total knee replacement surgery: A prospective cross sectional study.Annals of medicine and surgery (2012) · 2022Article
- Associations between Patient-Reported and Clinician-Reported Outcome Measures in Patients after Traumatic Injuries of the Lower Limb.International journal of environmental research and public health · 2022Article
- Does obesity affect patient-reported outcomes following total knee arthroplasty?BMC musculoskeletal disorders · 2022Article
- Higher treatment effect after total knee arthroplasty is associated with higher patient satisfaction.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021Article
Corrections and comments
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Authors and funding
8 authors at 4 institutions in 3 countries.
Funding
Abstract
purposeThis study investigated the impact of body mass index (BMI) on improvement in patient outcomes (pain, function, joint awareness, general health and satisfaction) following total knee arthroplasty (TKA).
methodsData were obtained for primary TKAs performed at a single centre over a 12-month period. Data were collected pre-operatively and 12-month postoperatively with the Oxford Knee Score (OKS) measuring pain and function, the EQ-5D-3L measuring general health status, the Forgotten Joint Score-12 (FJS-12) measuring joint awareness and a single question on treatment satisfaction. Change in scores following surgery was compared across the BMI categories identified by the World Health Organization (< 25.0, 25.0-29.9, 30.0-34.9, 35.0-39.9 and ≥ 40.0). Differences in postoperative improvement between the BMI groups were analysed with an overall Kruskal-Wallis test, with post hoc pairwise comparisons between BMI groups with Mann-Whitney tests.
resultsOf 402 patients [mean age 70.7 (SD 9.2); 55.2% women] 15.7% were normal weight (BMI < 25.0), 33.1% were overweight (BMI 25.0-29.9), 28.2% had class I obesity (BMI 30.0-34.9), 16.2% had class II obesity (BMI 35.0-39.9), and 7.0% had class III obesity (BMI ≥ 40.0). Postoperative change in OKS (n.s.) and EQ-5D-3L (n.s.) was not associated with BMI. Higher BMI group was associated with less improvement in FJS-12 scores (p = 0.010), reflecting a greater awareness of the operated joint during activity in the most obese patients. Treatment satisfaction was associated with BMI category (p = 0.029), with obese patients reporting less satisfaction.
conclusionsIn TKA patients, outcome parameters are influenced differently by BMI. Our study showed a negative impact of BMI on postoperative improvement in joint awareness and satisfaction scores, but there was no influence on pain, function or general health scores. This information may be useful in terms of setting expectations expectation in obese patients planning to undergo TKA. LEVEL OF EVIDENCE: Level 1.
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