Muscle activity during shoulder dislocation

Authors

  • Lars-Ake Broström
  • Margareta Kronberg
  • Gunnar Nemeth

DOI:

https://doi.org/10.3109/17453678909149593

Abstract

EMG activity from eight shoulder muscles in parallel was recorded from 4 patients with generalized joint laxity. During external rotation of the humerus in 45° abduction, humeroscapular dislocation occurred in 2 patients and subluxation in the 2 others. The activity level in the subscapularis was low, and the activation speed was slow. The low muscle activity and delay in activation of the subscapularis muscle may contribute to the instability.

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Published

1989-01-01

How to Cite

Broström, L.-A., Kronberg, M., & Nemeth, G. (1989). Muscle activity during shoulder dislocation. Acta Orthopaedica, 60(6), 639–641. https://doi.org/10.3109/17453678909149593