ArticleBMC musculoskeletal disorders2021
Validity and reliability of smartphone applications for measurement of hip rotation, compared with three-dimensional motion analysis.
Article in BMC musculoskeletal disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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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
8 citing papers in PubMed.
- A hip test battery for clinical practice: reliability, reference values, and the pitfalls of the Limb Symmetry Index.BMC musculoskeletal disorders · 2026Article
- Intra-Rater, Inter-Rater, and Test-Retest Reliability of a Laser- and Inclinometer-Based Hip Joint Position Sense Test in Healthy Adults: A Two-Phase Study with Preliminary Reference Values.Muscles (Basel, Switzerland) · 2026Article
- Psychometric Properties of a Smartphone Application for Measuring Shoulder Active Range of Motion in Individuals with and without Shoulder Pain and Mobility Deficits.Journal of pain research · 2026Article
- Lower Limb Biomechanical Observations in Hypermobile Children: An Exploratory Case-Control Study.International journal of environmental research and public health · 2025Article
- Validity and Reliability of Inertial Measurement Units in Active Range of Motion Assessment in the Hip Joint.Sensors (Basel, Switzerland) · 2023Article
- Validity and Reliability of a Novel Smartphone Tele-Assessment Solution for Quantifying Hip Range of Motion.Sensors (Basel, Switzerland) · 2022Article
- The Intra- and Inter-Rater Reliability of a Hip Rotation Range-of-Motion Measurement Using a Smartphone Application in Academy Football (Soccer) Players.Sports (Basel, Switzerland) · 2021Article
- The Telemedicine-Based Pediatric Examination of the Back and Lower Limbs: A Narrative Review.Journal of pain research · 2021Review
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
backgroundMeasurement of hip rotation is a crucial clinical parameter for the identification of hip problems and the monitoring of symptoms. The objective of this study was to determine whether the use of two smartphone applications is valid and reliable for the measurement of hip rotation.
methodsAn experimental, cross-sectional study was undertaken to assess passive hip internal and external rotation in three positions by two examiners. The hip rotational angles were measured by a smartphone clinometer application in the sitting and prone positions, and by a smartphone compass application in the supine position; their results were compared with those of the standard, three-dimensional, motion analysis system. The validities and inter-rater and intra-rater reliabilities of the smartphone applications were evaluated.
resultsThe study involved 24 participants. The validities were good to excellent for the internal rotation angles in all positions (ICC 0.81-0.94), good for the external rotation angles in the prone position (ICC 0.79), and fair for the sitting and supine positions (ICC 0.70-0.73). The measurement of the hip internal rotation in the supine position had the highest ICC value of 0.94 (0.91, 0.96). The two smartphone applications showed good-to-excellent intra-rater reliability, but good-to-excellent inter-rater reliability for only three of the six positions (two other positions had fair reliability, while one position demonstrated poor reliability).
conclusionsThe two smartphone applications have good-to-excellent validity and intra-rater reliability, but only fair-to-good inter-rater reliability for the measurement of the hip rotational angle. The most valid hip rotational position in this study was the supine IR angle measurement, while the lowest validity was the ER angle measurement in the sitting position. The smartphone application is one of the practical measurements in hip rotational angles.
trial registrationNumber 20181022003 at the Thai Clinical Trials Registry ( http://www.clinicaltrials.in.th ) which was retrospectively registered at 2018-10-18 15:30:29.
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