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Related Experiment Videos

Contracture of the shoulder.

K Nobuhara1, D Sugiyama, H Ikeda

  • 1Nobuhara Hospital, Hyogo, Japan.

Clinical Orthopaedics and Related Research
|May 1, 1990
PubMed
Summary

Frozen shoulder, affecting 60% of patients with limited shoulder motion, often occurs in those aged 50-60. This study analyzed contracture mechanisms and found arthroplasty effective when conservative treatments fail.

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Area of Science:

  • Orthopedics
  • Rheumatology
  • Sports Medicine

Background:

  • Frozen shoulder (adhesive capsulitis) is a common condition causing limited shoulder range of motion.
  • It affects a significant portion of patients presenting with shoulder immobility, particularly those aged 50-60.
  • The underlying mechanisms of contracture involve subacromial bursitis and rotator muscle involvement.

Purpose of the Study:

  • To analyze the complex mechanisms contributing to frozen shoulder contracture.
  • To investigate the relationship between the causes of contracture and the specific patterns of decreased shoulder mobility.
  • To evaluate the effectiveness of different treatment modalities for frozen shoulder.

Main Methods:

  • Retrospective study of 2027 patients with limited shoulder range of motion (1970-1987).
  • Diagnosis of frozen shoulder in 1219 patients (60%).
  • Analysis of shoulder external rotation ratios in different arm positions to understand mobility limitations.

Main Results:

  • Highest incidence of frozen shoulder observed in patients aged 50-60 years.
  • A specific ratio (approximately 1:1) was found between external rotation with the arm adducted and abducted to the horizontal plane.
  • Conservative treatments (physiotherapy, local anesthetic block, joint distension) are recommended first-line options.

Conclusions:

  • Conservative management should be exhausted before considering surgical intervention for frozen shoulder.
  • Arthroplasty of the subacromial joint demonstrated satisfactory clinical outcomes in patients with frozen shoulder who did not respond to conservative care.

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