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Sensors 2015, 15(10), 26801-26817; doi:10.3390/s151026801

Measurement Properties of the Smartphone-Based B-B Score in Current Shoulder Pathologies

1
Haute Ecole de Santé Vaud (HESAV)//HES-SO, University of Applied Sciences Western Switzerland, Physiotherapy Department, Avenue de Beaumont 21, 1011 Lausanne, Switzerland
2
CHUV-UNIL, Orthopedics and Traumatology Department, Avenue Pierre-Decker 4, 1011 Lausanne, Switzerland
3
Laboratory of Movement Analysis and Measurement, Ecole Polytechnique Fédérale de Lausanne (EPFL), ELH 135 (Bâtiment ELH), Station 11, 1015 Lausanne, Switzerland
4
School of Health Sciences, Queen Margaret University, Edinburgh EH21 6UU, UK
5
CHUV-UNIL, direction médicale, Rue du Bugnon 46, 1011 Lausanne, Switzerland
*
Author to whom correspondence should be addressed.
Academic Editor: Ki H. Chon
Received: 15 June 2015 / Revised: 17 September 2015 / Accepted: 12 October 2015 / Published: 22 October 2015
(This article belongs to the Special Issue Smartphone-Based Sensors for Non-Invasive Physiological Monitoring)
View Full-Text   |   Download PDF [419 KB, uploaded 23 October 2015]   |  

Abstract

This study is aimed at the determination of the measurement properties of the shoulder function B-B Score measured with a smartphone. This score measures the symmetry between sides of a power-related metric for two selected movements, with 100% representing perfect symmetry. Twenty healthy participants, 20 patients with rotator cuff conditions, 23 with fractures, 22 with capsulitis, and 23 with shoulder instabilities were measured twice across a six-month interval using the B-B Score and shoulder function questionnaires. The discriminative power, responsiveness, diagnostic power, concurrent validity, minimal detectable change (MDC), minimal clinically important improvement (MCII), and patient acceptable symptom state (PASS) were evaluated. Significant differences with the control group and significant baseline—six-month differences were found for the rotator cuff condition, fracture, and capsulitis patient groups. The B-B Score was responsive and demonstrated excellent diagnostic power, except for shoulder instability. The correlations with clinical scores were generally moderate to high, but lower for instability. The MDC was 18.1%, the MCII was 25.2%, and the PASS was 77.6. No floor effect was observed. The B-B Score demonstrated excellent measurement properties in populations with rotator cuff conditions, proximal humerus fractures, and capsulitis, and can thus be used as a routine test to evaluate those patients. View Full-Text
Keywords: shoulder; shoulder function; measurement properties; outcome assessment; validation studies; smartphone sensors; body-worn sensors; kinematics shoulder; shoulder function; measurement properties; outcome assessment; validation studies; smartphone sensors; body-worn sensors; kinematics
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Pichonnaz, C.; Duc, C.; Gleeson, N.; Ancey, C.; Jaccard, H.; Lécureux, E.; Farron, A.; Jolles, B.M.; Aminian, K. Measurement Properties of the Smartphone-Based B-B Score in Current Shoulder Pathologies. Sensors 2015, 15, 26801-26817.

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