Relative contributions of the infraspinatus and deltoid during external rotation in patients with symptomatic subacromial impingement.

@article{Clisby2008RelativeCO,
  title={Relative contributions of the infraspinatus and deltoid during external rotation in patients with symptomatic subacromial impingement.},
  author={Elizabeth F Clisby and Natalie L Bitter and Michael J Sandow and Mark Alan Jones and Mary Elizabeth Magarey and Shapour Jaberzadeh},
  journal={Journal of shoulder and elbow surgery},
  year={2008},
  volume={17 1 Suppl},
  pages={87S-92S}
}
A principal cause of subacromial impingement (SAI) is failure of the rotator cuff to center the humeral head in the glenoid during shoulder motion, counteracting the effect of the deltoid. As rehabilitation of the rotator cuff endeavors to restore balance between these muscle groups, the purpose of this companion study was to evaluate, in the symptomatic shoulders of patients with SAI, (1) the conditions of resisted isometric external rotation (ER) that optimized the contribution of the… CONTINUE READING
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