Journal
JOURNAL OF BIOMECHANICS
Volume 47, Issue 10, Pages 2219-2230Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jbiomech.2014.04.028
Keywords
Shoulder; Accuracy; Reliability; Validity; Scapular kinematics
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Methods based on cutaneous markers are the most popular for the recording of three dimensional scapular motion analysis. Numerous methods have been evaluated, each showing different levels of accuracy and reliability. The aim of this review was to report the metrological properties of 3D scapular kinematic measurements using cutaneous markers and to make recommendations based on metrological evidence. A database search was conducted using relevant keywords and inclusion/exclusion criteria in 5 databases. 19 articles were included and assessed using a quality score. Concurrent validity and reliability were analyzed for each method. Six different methods are reported in the literature, each based on different marker locations and post collection computations. The acromion marker cluster (AMC) method coupled with a calibration of the scapula with the arm at rest is the most studied method. Below 90-100 degrees of humeral elevation, this method is accurate to about 5 degrees during arm flexion and 7 degrees during arm abduction compared to palpation (average of the 3 scapular rotation errors). Good to excellent within-session reliability and moderate to excellent between-session reliability have been reported. The AMC method can be improved using different or multiple calibrations. Other methods using different marker locations or more markers on the scapula blade have been described but are less accurate than AMC methods. Based on current metrological evidence we would recommend (1) the use of an AMC located at the junction of the scapular spine and the acromion, (2) the use of a single calibration at rest if the task does not reach 90 degrees of humeral elevation, (3) the use of a second calibration (at 90 degrees or 120 degrees of humeral elevation), or multiple calibrations above 90 degrees of humeral elevation. (C) 2014 Elsevier Ltd. All rights reserved.
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