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[Purpose] We identified relations of spinal sagittal alignment in standing with scapular position and glenohumeral joint abduction range of motion (GHjt-ROM). [Subjects] We examined forty young healthy male subjects. [Methods] We measured neck flexion angle, index of kyphosis, pelvic tilt angle, thoracic circumference, scapular position, and GHjt-ROM in standing. We examined the relevance of scapular position and GHjt-ROM with multiple regression analysis. [Results] We found that thoracic kyphosis, thoracic circumference, and scapular position, are highly related. [Conclusion] Increased anterior pelvic tilt, lumbar lordosis, thoracic kyphosis, thoracic circumference, abduction and upward rotation of scapula are implicated in scapular abduction. We assume that the scapula is directly affected by thoracic kyphosis and thoracic shape, because the scapula is located on the thorax.

Relations of Standing Spinal Sagittal Alignment with Scapular Position and Glenohumeral Joint Abduction Range of Motion