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Trabecular microstructure and surface changes in the greater tuberosity in rotator cuff tears
Yebin Jiang1, Jenny Zhao, Marnix T van Holsbeeck
1Osteoporosis and Arthritis Research Group and Musculoskeletal Section, Department of Radiology, University of California, San Francisco, CA 94143-0628, USA. Yebin.Jiang@oarg.ucsf.edu
Skeletal Radiology
|August 27, 2002
Summary
Rotator cuff tears lead to bone loss and structural changes in the greater tuberosity. These findings highlight the link between rotator cuff health, bone density, and aging.
Area of Science:
- Orthopedic Surgery
- Bone Biology
- Radiology
Background:
- Rotator cuff tears are common, impacting shoulder function.
- Bone quality in the greater tuberosity is crucial for surgical planning.
- Trabecular bone structure changes are not fully understood in rotator cuff tears.
Purpose of the Study:
- To investigate radiographic changes in the greater tuberosity's bone structure in rotator cuff tears.
- To quantify trabecular bone parameters in relation to rotator cuff tear severity.
Main Methods:
- Analysis of 22 human cadaveric shoulders (ages 55-75).
- Rotator cuff integrity assessed via sonography.
- Microradiography and advanced image processing to quantify trabecular bone histomorphometry.
- Blind assessment of degenerative surface changes.
Main Results:
- Significant loss in bone volume, trabecular nodes, and branches in torn rotator cuffs.
- Increased trabecular separation and free ends observed with tears.
- Degenerative changes and thickening of the cortical margin were more prevalent with increasing tear severity.
Conclusions:
- Rotator cuff tears are associated with disuse osteopenia and surface bone degeneration in the greater tuberosity.
- Aging, enthesopathy, and rotator cuff tears are closely interrelated.
- These bone changes have implications for surgical outcomes and treatment strategies.