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Related Experiment Videos

Frozen shoulder: a sympathetic dystrophy?

L P Müller1, L A Müller, J Happ

  • 1Johannes Gutenberg-Universität Mainz, Klinik und Poliklinik für Unfallchirurgie, Germany. mueller@ach.klinik.uni-mainz.de

Archives of Orthopaedic and Trauma Surgery
|February 1, 2000
PubMed
Summary
This summary is machine-generated.

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Frozen shoulder syndrome and Sudeck syndrome share diagnostic similarities. Quantitative digital radiography reveals significant bone mineral density decreases in early frozen shoulder, supporting an algoneurodystrophic process.

Area of Science:

  • Orthopedics
  • Radiology
  • Rheumatology

Background:

  • Frozen shoulder syndrome and Sudeck syndrome exhibit overlapping diagnostic and clinical features.
  • Both conditions show increased uptake on radioisotope bone scans and progressive demineralization on radiographs.

Observation:

  • Quantitative digital radiography was used to measure bone mineral density (BMD) in patients with frozen shoulder.
  • A significant BMD decrease (>21%) was observed in the humeral head of the affected shoulder in 10 out of 12 primary frozen shoulder patients compared to the contralateral side.

Findings:

  • The observed BMD decreases in frozen shoulder patients were significantly higher than in control groups with rotator cuff issues, calcifying tendinitis, shoulder instability, or healthy individuals.
  • These findings objectify local decalcification processes in the early stages of frozen shoulder syndrome.

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Implications:

  • The results support the hypothesis that frozen shoulder may be an algoneurodystrophic process.
  • This could lead to earlier diagnosis and potentially expanded therapeutic strategies for frozen shoulder syndrome.