Article

Scapular orientation may be influenced by static body posture
(sitting and standing) and contribute to the development of shoulder pain.
Therefore, a consistent body posture should be considered when assessing scapular
orientation as well as enhancing optimal scapular positioning. OBJECTIVE: To
determine whether there are differences in scapular orientation between standing,
neutral sitting, and habitual sitting, while adjusting for spinal posture.
DESIGN: A single group randomized repeated measures study. SETTING: University
laboratory. PARTICIPANTS: Twenty-eight participants with shoulder pain were
recruited from the community. METHODS: Scapular orientation between standing and
seated positions was compared, with the arm by the side and at 120 degrees of
glenohumeral scaption. Thoracic kyphosis and lumbar lordosis angles were used as
covariates. MAIN OUTCOME MEASUREMENTS: Scapular elevation, lateral translation,
upward rotation, and posterior tilt. RESULTS: Scapular orientation was marginally
but significantly different between sitting postures for lateral translation
(mean 0.5 cm; 95% confidence interval [95% CI] 0.2-0.7 cm); P < .001), upward
rotation (mean 3 degrees ; 95% CI 1.1-5.0 degrees ; P < .001), and posterior tilt
(mean 2.3 degrees ; 95% CI 0.2-4.3 degrees ; P = .009) in the arm by side
position. A small-but-significant difference between standing and neutral sitting
was found for upward rotation (mean 1.8 degrees ; 95% CI 0-3.7 degrees ; P =
.02), and between standing and habitual sitting for lateral translation (mean 0.6
cm; 95% CI 0-1.1 cm; P =.02) in the arm by side position. CONCLUSIONS: The
results of this study suggest that scapular orientation can be slightly affected
by body posture, although the clinical relevance is uncertain. To enhance
scapular upward rotation or posterior tilt, it may be preferable to place the
patient in neutral sitting. LEVEL OF EVIDENCE: Not applicable.
CI - Copyright (c) 2017 American Academy of Physical Medicine and Rehabilitation.
Published by Elsevier Inc. All rights reserved.

Langue : ANGLAIS