How is the pathophysiology of frozen shoulder syndrome (FSS) (adhesive capsulitis)?

Updated: Nov 12, 2020
  • Author: Jefferson R Roberts, MD; Chief Editor: S Ashfaq Hasan, MD  more...
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Immune, inflammatory and fibrotic changes appear to be involved in the pathophysiology of FSS. [29] The current hypothesis posits inflammation in the joint capsule [30]  followed by development of adhesions and fibrosis of the synovial lining. [31] Thickening and contraction of the glenohumeral joint capsule and formation of collagenous tissue surrounding the joint reduces joint volume.

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