Trial reportThe Journal of orthopaedic and sports physical therapy2013
Single-step test for unilateral limb ability following total knee arthroplasty.
Trial report in The Journal of orthopaedic and sports physical therapy, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 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
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.
- Aerobic Physical Fitness and Recreational Sports Participation After Total Knee Arthroplasty.Sports healthPooled it
- Effects of Dual-Task Stroboscopic Visual Training on Balance, Functional Mobility, and Gait in Children Who Are Hard-of-Hearing: A Exploratory Randomized Controlled Study.Journal of clinical medicine · 2025Article
- Effect of periarticular cocktail of analgesia on immediate post-operative clinical outcomes after bilateral simultaneous total knee arthroplasty: a randomized placebo controlled, split-body superiority trial.Journal of clinical orthopaedics and trauma · 2024Article
- Surgical site, gender, and place of residence influence the time to resume driving after total joint arthroplasty.Archives of physiotherapy · 2021Article
- Evaluation of braking performances of patients with osteoarthritis of the knee or hip: Are there alternatives to a brake simulator?Acta orthopaedica et traumatologica turcica · 2021Article
- Controlled Hypotension Combined with Femoral Nerve Block for Knee Replacement without Tourniquet.Journal of healthcare engineering · 2021Article
- Article
- Differences in Lower Extremity and Trunk Kinematics between Single Leg Squat and Step Down Tasks.PloS one · 2015Article
- Timeframe for return to driving for patients with minimally invasive knee arthroplasty is associated with knee performance on functional tests.BMC musculoskeletal disorders · 2014Article
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 at 1 institution in 1 country.
Funding
Abstract
STUDY
designSecondary analysis of a cohort enrolled in a prospective, randomized, longitudinal clinical trial.
objectivesThe single-step test (SST) was evaluated to assess its intertester reliability, validity as a test of activity limitation, and responsiveness to change for patients after unilateral total knee arthroplasty (TKA). The SST was also examined to determine whether it could differentiate between the surgical and nonsurgical lower limbs of patients after unilateral TKA and between the surgical limbs of patients after TKA and the limbs of healthy controls.
backgroundTests of functional ability for patients recovering from TKA cannot differentiate the contribution of each limb to performance outcome. A test of unilateral limb ability would provide a metric for assessing the surgical lower extremity, without the confounder of the status of the contralateral lower extremity.
methodsIntertester reliability was assessed between clinicians and between a clinician and a switch mat. Patients who underwent unilateral TKA were tested at initial outpatient physical therapy evaluation, at 3 months after TKA, and at 1 year after TKA.
resultsThe assessment of function with the SST was determined to be reliable between testers when using a stopwatch. SST times were significantly correlated with other measures of lower extremity functional performance, providing evidence of its validity in patients after TKA. The SST was responsive to treatment in patients after TKA, with improvements in time for test completion. Performance on the SST also differed between limbs of patients after TKA and when comparing the limbs of healthy controls to those of patients after TKA.
conclusionThe SST is a reliable measure between testers and a valid and responsive test of activity limitations when assessing unilateral lower extremity impairments in patients after TKA.
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Registered trials
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