Trial reportBioMed research international2015
Knee Flexion and Daily Activities in Patients following Total Knee Replacement: A Comparison with ISO Standard 14243.
Trial report in BioMed research international, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
18 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Amount and type of physical activity and sports from one year forward after hip or knee arthroplasty-A systematic review.PloS one · 2021Pooled it
- Smart Total Knee Replacement: Recognition of Activities of Daily Living Using Embedded IMU Sensors and a Novel AI Model in a Cadaveric Proof-of-Concept Study.Sensors (Basel, Switzerland) · 2025Article
- Human-Interface Dynamics of Knee Exoskeletons with Lateral and Anteroposterior Attachment.IEEE ... International Conference on Rehabilitation Robotics : [proceedings] · 2025Article
- Validity and Reliability of a Smartphone Application Versus 2D Software for Joint Range of Motion Measurement: A Cross-Sectional Validation Study.Muscles (Basel, Switzerland) · 2025Article
- Article
- Tibiofemoral Slip Velocity in Total Knee Arthroplasty is Design-Invariant but Activity-Dependent.Annals of biomedical engineering · 2024Article
- The Intrarater and Interrater Reliability and Validity of Universal Goniometer, Digital Inclinometer, and Smartphone Application Measuring Range of Motion in Patients with Total Knee Arthroplasty.Indian journal of orthopaedics · 2024Article
- Geopolymers: Advanced Materials in Medicine, Energy, Anticorrosion and Environmental Protection.Materials (Basel, Switzerland) · 2023Review
- Patient reported outcomes do not correlate to functional knee recovery and range of motion in total knee arthroplasty.Journal of orthopaedics · 2023Article
- A method of assessing peripheral stent abrasiveness under cyclic deformations experienced during limb movement.Acta biomaterialia · 2022Article
- Observational
- Integrating a Potentiometer into a Knee Brace Shows High Potential for Continuous Knee Motion Monitoring.Sensors (Basel, Switzerland) · 2021Article
- Varus or valgus positioning of the tibial component of a unicompartmental fixed-bearing knee arthroplasty does not increase wear.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Does free-living physical activity improve one-year following total knee arthroplasty in patients with osteoarthritis: A prospective study.Osteoarthritis and cartilage open · 2020Article
- Effects of Elastic Resistance Exercise on Postoperative Outcomes Linked to the ICF Core Sets for Osteoarthritis after Total Knee Replacement in Overweight and Obese Older Women with Sarcopenia Risk: A Randomized Controlled Trial.Journal of clinical medicine · 2020Article
- Importance of knee flexion range of motion during the acute phase after total knee arthroplasty.Physical therapy research · 2020Article
- Compromised knee internal rotation in total knee arthroplasty patients during stair climbing.PloS one · 2018Article
- Quantification of Wear and Deformation in Different Configurations of Polyethylene Acetabular Cups Using Micro X-ray Computed Tomography.Materials (Basel, Switzerland) · 2017Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
Walking is only one of many daily activities performed by patients following total knee replacement (TKR). The purpose of this study was to examine the hypotheses (a) that subject activity characteristics are correlated with knee flexion range of motion (ROM) and (b) that there is a significant difference between the subject's flexion/extension excursion throughout the day and the ISO specified input for knee wear testing. In order to characterize activity, the number of walking and stair stepping cycles, the time spent with dynamic and stationary activities, the number of activity sequences, and the knee flexion/extension excursion of 32 TKR subjects were collected during daily activity. Flexion/extension profiles were compared with the ISO 14243 simulator input profile using a level crossing classification algorithm. Subjects took an average of 3102 (range: 343-5857) walking cycles including 65 (range: 0-319) stair stepping cycles. Active and passive ROMs were positively correlated with stair walking time, stair step counts, and stair walking sequences. Simulated knee motion according to ISO showed significantly fewer level crossings at the flexion angles 20-40° and beyond 50° than those measured with the monitor. This suggests that implant wear testing protocols should contain more cycles and a variety of activities requiring higher knee flexion angles with incorporated resting/transition periods to account for the many activity sequences.
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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.