Effect of external load on scapular upward rotation during arm elevation: the knot concept
نویسندگان
چکیده
منابع مشابه
Effect of external load on scapular upward rotation during arm elevation: the knot concept
BACKGROUND Failure of the scapulohumeral rhythm (SHR) is observed in patients with shoulder joint dysfunction. The SHR reportedly has a 2:1 ratio during scapular upward rotation with arm elevation. However, three-dimensional scapular motion analysis has indicated variations in this ratio according to the arm elevation angle. We observed 2 distinct patterns: the scapular upward rotation decrease...
متن کاملThe Effect of Glenohumeral Rotation on Scapular Upward Rotation in Different Positions of Scapular-Plane Elevation
Context: Glenohumeral and scapular upward rotation are important factors in functional upper extremity motion. Objectives: To determine how different amounts of glenohumeral rotation (internal, external, and neutral) affect scapular upward rotation. Design: Controlled laboratory study. Independent variables were the amounts of internal, external, and neutral glenohumeral rotation. The dependent...
متن کاملExternal rotation during elevation of the arm
BACKGROUND Knowledge about the pattern of rotation during arm elevation is necessary for a full understanding of shoulder function, and it is also useful for planning of rehabilitation protocols to restore range of motion in shoulders in disorder. However, there are insufficient in vivo data available. METHODS; We investigated dynamic arm rotation during elevation in different planes using 30 s...
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Effects of sex differences on scapular motion during arm elevation
INTRODUCTION Scapular motion during arm elevation is frequently evaluated in patients with shoulder disorders because it provides clinically useful information. With the development of measurement devices and improvement in accuracy, comparisons under various conditions have recently been reported. However, in most of these reports, the subjects examined were limited to males, or a mixed popula...
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ژورنال
عنوان ژورنال: Journal of Experimental Orthopaedics
سال: 2016
ISSN: 2197-1153
DOI: 10.1186/s40634-016-0044-6