Reliability and validity of goniometric iPhone applications for the assessment of active shoulder external rotation

Mitchell, Katy; Gutierrez, Simran Bakshi; Sutton, Stacy; Morton, Stephanie; Morgenthaler, Andrea

doi:10.3109/09593985.2014.900593

Cited by 74 publications

(75 citation statements)

References 12 publications

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“…2014 Mitchell et. al were comparing iOS apps "GetMyROM" and "DrGoniometer" and found both reliable and comparable to the mechanical goniometer [13]. In another study testing the iOS accelerometer "Simple Goniometer", Jones et al judged the app reliable [14].…”

Section: Discussionmentioning

confidence: 99%

Goniometer-apps in hand surgery and their applicability in daily clinical practice

et al. 2015

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Background: Smartphones have become an integral part of our daily lives, and numerous applications (apps) make use of the goniometer, which is comparable to a medical protractor. The aim of this study was to evaluate the availability, reliability and validity of medical apps using the goniometer function in smartphones. Methods: Sixteen goniometer-apps downloaded from Apple's (twelve apps) and Google's (four apps) app stores matched initial inclusion criteria (inclusion criteria: *gonio* or *rom*, specifically designed to measure angles) were assessed and compared to a universal mechanical goniometer by measuring an irregular, four-sided pyramid with distinct angles. Results: Twelve iOS (Apple's operating system) and four Android (Google's operating system) apps were included. Ten of twelve iOS apps were showing an average deviation from the real angles of a maximum 1.8°; the values for Android apps did not exceed 1.3°. Conclusions: Fourteen out of sixteen apps were reliable and valid for measuring angles. Based on correct handling and adequate user-applicability of the on-board goniometer these apps can make a smartphone applicable for data acquisition in medicine. So far, smartphone apps for measuring angles have not been readily applied in clinical practice in hand surgery.

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Section: Discussionmentioning

confidence: 99%

Goniometer-apps in hand surgery and their applicability in daily clinical practice

et al. 2015

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“…DrGoniometer can be used to rate images taken in static or dynamic conditions, such as frames obtained from video of gait, therapeutic exercises or special tests (such as Laségue and Nordic Hamstring Test). The app has been found reliable and accurate in measuring different joints, including shoulder, knee and elbow 1 4. It can help to improve patient compliance to treatment by showing the sequential pictures demonstrating the evidence of care provided.…”

Section: Use In Clinical Practicementioning

confidence: 99%

DrGoniometer: a reliable smartphone app for joint angle measurement

et al. 2016

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“…The applications addressing the assessment of shoulder range of motion (ROM) generally demonstrated adequate measurement properties [21–23]. However, ROM is only one component of shoulder function and no smartphone-based assessment score for shoulder function has been validated to our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Heightened clinical utility of smartphone versus body-worn inertial system for shoulder function B-B score

et al. 2017

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BackgroundThe B-B Score is a straightforward kinematic shoulder function score including only two movements (hand to the Back + lift hand as to change a Bulb) that demonstrated sound measurement properties for patients for various shoulder pathologies. However, the B-B Score results using a smartphone or a reference system have not yet been compared. Provided that the measurement properties are comparable, the use of a smartphone would offer substantial practical advantages. This study investigated the concurrent validity of a smartphone and a reference inertial system for the measurement of the kinematic shoulder function B-B Score.MethodsSixty-five patients with shoulder conditions (with rotator cuff conditions, adhesive capsulitis and proximal humerus fracture) and 20 healthy participants were evaluated using a smartphone and a reference inertial system. Measurements were performed twice, alternating between two evaluators. The B-B Score differences between groups, differences between devices, relationship between devices, intra- and inter-evaluator reproducibility were analysed.ResultsThe smartphone mean scores (SD) were 94.1 (11.1) for controls and 54.1 (18.3) for patients (P < 0.01). The difference between devices was non-significant for the control (P = 0.16) and the patient group (P = 0.81). The analysis of the relationship between devices showed 0.97 ICC, −0.6 bias and −13.2 to 12.0 limits of agreement (LOA). The smartphone intra-evaluator ICC was 0.92, the bias 1.5 and the LOA −17.4 to 20.3. The smartphone inter-evaluator ICC was 0.92, the bias 1.5 and the LOA −16.9 to 20.0.ConclusionsThe B-B Score results measured with a smartphone were comparable to those of an inertial system. While single measurements diverged in some cases, the intra- and inter-evaluator reproducibility was excellent and was equivalent between devices. The B-B score measured with a smartphone is straightforward and as efficient as a reference inertial system measurement.

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Reliability and validity of goniometric iPhone applications for the assessment of active shoulder external rotation

Abstract: Further study using patient populations may find the two studied applications are useful as an adjunct for clinical practice.

Cited by 74 publications

References 12 publications

Goniometer-apps in hand surgery and their applicability in daily clinical practice

Goniometer-apps in hand surgery and their applicability in daily clinical practice

DrGoniometer: a reliable smartphone app for joint angle measurement

Heightened clinical utility of smartphone versus body-worn inertial system for shoulder function B-B score

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