The unstable shoulder in arm elevation: a three-dimensional and electromyographic study in subjects with glenohumeral instability.

@article{Matias2006TheUS,
  title={The unstable shoulder in arm elevation: a three-dimensional and electromyographic study in subjects with glenohumeral instability.},
  author={Ricardo Matias and Augusto Gil Pascoal},
  journal={Clinical biomechanics},
  year={2006},
  volume={21 Suppl 1},
  pages={S52-8}
}
BACKGROUND Although an altered scapulohumeral rhythm is believed to be related to some shoulder dysfunctions, there is scarce evidence on the scapulohumeral rhythm and shoulder muscle activation patterns in subjects with glenohumeral instability. METHODS Six subjects with glenohumeral instability performed arm elevation in trials of 8 successive stationary positions. Kinematics were recorded on each stationary position using a 6 DOF electromagnetic tracking device. Scapular kinematics was… CONTINUE READING

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