ArticleKnee surgery & related research2021
Relationship between early physical activity after total knee arthroplasty and postoperative physical function: are these related?
Article in Knee surgery & related research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 3 of them syntheses that pooled it.
What it found
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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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
12 citing papers in PubMed, 3 syntheses or guidelines pooled it, 18 citations in OpenAlex.
- Comparison of conventional and minimally invasive approaches of primary total knee arthroplasty: a network meta-analysis of randomized controlled trials.BMC musculoskeletal disorders · 2026Pooled it
- The course of knee extensor strength after total knee arthroplasty: a systematic review with meta-analysis and -regression.Archives of orthopaedic and trauma surgery · 2023Pooled it
- Detection of Prosthetic Loosening in Hip and Knee Arthroplasty Using Machine Learning: A Systematic Review and Meta-Analysis.Medicina (Kaunas, Lithuania) · 2023Pooled it
- Functional Capacity at Rehabilitation Discharge Predicts Physical Activity Characteristics 24 Weeks Later for People With Total Knee Arthroplasty: A Secondary Analysis of a Randomized Controlled Trial.Archives of physical medicine and rehabilitation · 2025Trial
- Do we need rehabilitation after total knee arthroplasty? Evidence, uncertainty and the need for focus.Journal of experimental orthopaedics · 2026Article
- Volume and quality of the gluteal muscles are associated with early physical function after total hip arthroplasty.International journal of computer assisted radiology and surgery · 2025Article
- Comparison Between Total Hip and Knee Arthroplasty on Short-Term Performance-Based Outcomes and Factors Associated with the Improvement of Gait Function During Post-Acute Inpatient Rehabilitation.Journal of clinical medicine · 2024Article
- Machine Learning for Detecting Total Knee Arthroplasty Implant Loosening on Plain Radiographs.Bioengineering (Basel, Switzerland) · 2023Article
- Central Sensitization Is Associated with Inferior Patient-Reported Outcomes and Increased Osteotomy Site Pain in Patients Undergoing Medial Opening-Wedge High Tibial Osteotomy.Medicina (Kaunas, Lithuania) · 2022Article
- Do Preoperative Vastus Medialis Volume and Quality Affect Functional Outcomes after Total Knee Arthroplasty?Journal of clinical medicine · 2022Article
- Diagnosis of Central Sensitization and Its Effects on Postoperative Outcomes following Total Knee Arthroplasty: A Systematic Review and Meta-Analysis.Diagnostics (Basel, Switzerland) · 2022Review
- Preoperative Strength Training for Clinical Outcomes Before and After Total Knee Arthroplasty: A Systematic Review and Meta-Analysis.Frontiers in surgery · 2022Review
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundPhysical activity is associated with physical function; however, the relationship between early physical activity after total knee arthroplasty (TKA) and postoperative physical function remains unclear. The purpose of this study was to evaluate the association of early physical activity after TKA with postoperative physical function.
methodsTimed Up and Go test (TUG) of 47 patients was assessed preoperatively and at 10 days, 3 months, and 6 months postoperatively. Physical activity from the second to the ninth day after TKA was measured with accelerometer, and the correlation with pre- and postoperative physical function was evaluated . A multiple linear regression was used to predict TUG at 6 months after TKA.
resultsPostoperative physical activity correlated with preoperative TUG (ρ = -0.485, p < 0.001), TUG at 10 days (ρ = -0.675, p < 0.001), 3 months (ρ = -0.441, p < 0.01), and 6 months (ρ = -0.368, p < 0.05) after surgery. Multiple linear regression indicated that only the preoperative TUG was associated with TUG at 6 months. Postoperative physical activity was not an independent factor predicting TUG at 6 months after TKA.
conclusionOur study demonstrated that patients with better physical function have higher physical activity in the early postoperative period, whereas it does not affect physical function at 6 months after TKA. In the early postoperative period, increasing physical activity may not always be necessary to improve postoperative physical function. We also confirmed that preoperative physical function affects postoperative physical function. These findings may be beneficial in improving rehabilitation programs in the early postoperative period.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.