ArticlePloS one2021
Which functional tasks present the largest deficits for patients with total hip arthroplasty before and six months after surgery? A study of the timed up-and-go test phases.
Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses 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
13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.
- In vivo biomechanics after total hip arthroplasty: a state-of-the-art systematic review.EFORT open reviews · 2026Pooled it
- Instrumented Timed Up and Go Test (iTUG)-More Than Assessing Time to Predict Falls: A Systematic Review.Sensors (Basel, Switzerland) · 2023Pooled it
- Functional Status after Ventral Hernia Repair: Longitudinal Trends and the Limits of Improvement.Journal of the American College of Surgeons · 2026Trial
- Instrumented Timed Up and Go Analysis Identifies Biomechanical Markers Across Early Hoehn and Yahr Stages of Parkinson's Disease.Sensors (Basel, Switzerland) · 2026Article
- Biomechanical Assessment of Functional Tasks Beyond Level Walking Following Total Hip Arthroplasty: A Scoping Review.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026Article
- Reliability and Discriminant Ability of an Instrumented Timed Up and Go Test in People With Postsurgical Orthopedic Conditions: Quantitative Study.JMIR rehabilitation and assistive technologies · 2026Article
- Hip offset parameters and functional outcomes following total hip arthroplasty: association with performance, strength, and patient-reported outcomes.Journal of orthopaedic surgery and research · 2026Article
- Risk of Fall in Patients with Functional Hallux Limitus: A Case-Control Study Using an Inertial Measurement Unit.Bioengineering (Basel, Switzerland) · 2025Article
- Kinematic Biomarkers of Functional Disability in Older Adults: Analysis of the Timed Up and Go Test.Biosensors · 2025Article
- Functional Mobility Studies in Younger Adults: Instrumented Timed Up and Go (iTUG) Test Using Inertial Devices.Journal of clinical medicine · 2025Article
- Predictive and classification capabilities of the timed up and go as a physical performance measure in hip osteoarthritis: a retrospective study of 606 patients.Archives of orthopaedic and trauma surgery · 2024Article
- Efficacy of Real-Time Feedback Exercise Therapy in Patients Following Total Hip Arthroplasty: Protocol for a Pilot Cluster-Randomized Controlled Trial.JMIR research protocols · 2024Article
- Using the TUG Test for the Functional Assessment of Patients with Selected Disorders.International journal of environmental research and public health · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Six to eight months after total hip arthroplasty, patients only attain 80% of the functional level of control groups. Understanding which functional tasks are most affected could help reduce this deficit by guiding rehabilitation towards them. The timed up-and-go test bundles multiple tasks together in one test and is a good indicator of a patient's overall level of function. Previously, biomechanical analysis of its phases was used to identify specific functional deficits in pathological populations. To the best of our knowledge, this analysis has never been performed in patients who have undergone total hip arthroplasty. Seventy-one total hip arthroplasty patients performed an instrumented timed up-and-go test in a gait laboratory before and six months after surgery; fifty-two controls performed it only once. Biomechanical features were selected to analyse the test's four phases (sit-to-stand, walking, turning, turn-to-sit) and mean differences between groups were evaluated for each phase. On average, six months after surgery, patients' overall test time rose to 80% of the mean of the control group. The walking phase was revealed as the main deficiency before and after surgery (-41 ± 47% and -22 ± 32% slower, respectively). High standard deviations indicated that variability between patients was high. On average, patients showed improved results in every phase of the timed up-and-go test six months after surgery, but residual deficits in function differed between those phases. This simple test could be appropriate for quantifying patient-specific deficits in function and hence guiding and monitoring post-operative rehabilitation in clinical settings.
Indexed as
Identifiers
What OpenQuestion holds
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.