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Related Experiment Video

Updated: May 24, 2026

Rat Model of Adhesive Capsulitis of the Shoulder
04:46

Rat Model of Adhesive Capsulitis of the Shoulder

Published on: September 28, 2018

Glenoid cartilage mechanical properties decrease after rotator cuff tears in a rat model.

Katherine E Reuther1, Joseph J Sarver, Susan M Schultz

  • 1McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, 424 Stemmler Hall, 36th and Hamilton Walk, Philadelphia, PA 19104, USA.

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
|March 13, 2012
PubMed
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Rotator cuff tears in rats caused significant glenoid cartilage damage, including reduced thickness and altered mechanical properties. This suggests altered joint loading after injury may lead to pain and dysfunction.

Area of Science:

  • Orthopedics
  • Biomechanics
  • Biomaterials

Background:

  • Rotator cuff tears are common, potentially leading to glenohumeral arthritis.
  • The impact of rotator cuff tears on glenohumeral cartilage is not well understood.
  • Altered shoulder joint mechanics may cause abnormal glenoid loading.

Purpose of the Study:

  • To investigate the effects of supraspinatus and infraspinatus rotator cuff tears on glenoid cartilage in a rat model.
  • To understand the mechanical consequences of rotator cuff injury on joint integrity.

Main Methods:

  • Unilateral detachment of supraspinatus and infraspinatus tendons in nine rats.
  • Assessment of glenoid cartilage thickness and equilibrium elastic modulus after 4 weeks.

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Development and Evaluation of a Rat Model of Full-Thickness Cartilage Defects
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Related Experiment Videos

Last Updated: May 24, 2026

Rat Model of Adhesive Capsulitis of the Shoulder
04:46

Rat Model of Adhesive Capsulitis of the Shoulder

Published on: September 28, 2018

Development of a Rabbit Chronic-Like Rotator Cuff Injury Model for Study of Fibrosis and Muscular Fatty Degeneration
05:20

Development of a Rabbit Chronic-Like Rotator Cuff Injury Model for Study of Fibrosis and Muscular Fatty Degeneration

Published on: March 31, 2023

Development and Evaluation of a Rat Model of Full-Thickness Cartilage Defects
04:34

Development and Evaluation of a Rat Model of Full-Thickness Cartilage Defects

Published on: May 19, 2023

Main Results:

  • Significant decrease in cartilage thickness in the antero-inferior region of injured shoulders.
  • Significant decrease in equilibrium elastic modulus across multiple glenoid regions (center, antero-superior, antero-inferior, superior).

Conclusions:

  • Rotator cuff tears can lead to glenoid cartilage damage.
  • Altered joint loading following rotator cuff injury may result in pain and dysfunction.
  • Understanding these mechanical processes can aid clinical patient management.