Which muscles contribute to spasticity of the shoulder?

Updated: Jun 28, 2019
  • Author: Krupa Pandey, MD; Chief Editor: Stephen A Berman, MD, PhD, MBA  more...
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Muscles that often contribute to spastic adduction/internal rotation dysfunction of the shoulder include the latissimus dorsi, the teres major, the clavicular and sternal heads of the pectoralis major, and the subscapularis. In the flexed elbow, the brachioradialis is spastic more often than the biceps and brachialis. In the spastic flexed wrist, carpal tunnel symptoms may develop. Flexion with radial deviation implicates flexor carpi radialis.

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