The elastic properties of the tendinous and capsular layers of the rotator cuf complex using fresh tissue — a biomechanical study
Jessica Y. Cronje · Nkhensani Mogale · Shavana Govender · Mathys A. de Beer · Abrie J. Oberholster ·
Chris McDuling · Rudi Verbeek · Tshifhiwa Nkwenika · Natalie Keough
Keywords
Biomechanical Analysis
WORLD LEADING PRODUCT
In a recent biomechanical study published in the European Journal of Orthopaedic Surgery & Traumatology (2025), researchers including Jessica Y. Cronje, Nkhensani Mogale, and Shavana Govender, explored the elastic properties of the tendinous and capsular layers of the rotator cuff complex.
Conducted at the University of Pretoria and other institutions, the study employed TEMA software’s Digital Image Correlation (DIC) technology to analyze fresh tissue samples.
By using TEMA, the researchers were able to accurately measure the strain and calculate the elastic modulus of the rotator cuff muscles during tensile testing, ultimately achieving a detailed understanding of the biomechanical differences between the tendinous and capsular layers.
Material and Methodology
TURN-KEY SOLUTION
In this study, human shoulder tissues were dissected to isolate the tendinous and capsular layers of the rotator cuff muscles. Each tissue strip was subjected to tensile testing while being captured by a DIC camera setup.
TEMA’s DIC algorithm was used to track the displacement of a speckle pattern applied to the tissue, calculating strain across the sample and helping assess the mechanical properties of each tissue layer.
Results from TEMA
howland analytical strain vs DIC
The data revealed significant differences in the elastic properties of the tendinous and capsular layers of the rotator cuff muscles.
The tendinous layers displayed higher average tangent elastic moduli compared to their capsular counterparts, with the software accurately capturing strain variations during the testing process.
These findings are pivotal in understanding how different layers respond under load.
Conclusion and Future Applications
TURN-KEY SOLUTION
TEMA software’s advanced DIC capabilities provide invaluable insights into the biomechanical properties of soft tissues, as demonstrated in this study on the rotator cuff.
The findings underscore the importance of considering tendinous and capsular layers independently in surgical repairs to prevent biomechanical imbalances.
As this technology evolves, it holds great potential for furthering research in orthopedics, biomechanics, and regenerative medicine.
