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A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects
Published on: December 10, 2021
Collagen structure of tendon relates to function.
Marco Franchi1, Alessandra Trirè, Marilisa Quaranta
1Department of Human Anatomical Sciences and Physiopathology of Locomotor Apparatus, University of Bologna, Bologna, Italy. marco.franchi3@unibo.it
Thescientificworldjournal
|April 24, 2007
Summary
Tendons are fibrous connective tissues linking muscle to bone, crucial for force transmission. Their unique hierarchical structure, including collagen fibrils and "fibrillar crimps," enables them to withstand tension during muscle activity.
Area of Science:
- Musculoskeletal biology
- Connective tissue research
- Biomechanics
Background:
- Tendons are vital for transmitting muscle forces to the skeleton.
- Their structure comprises collagen, proteoglycans (PGs), and few cells.
- Understanding tendon mechanics is crucial for musculoskeletal health.
Purpose of the Study:
- To elucidate the structural organization of tendons.
- To explore the mechanisms of force transmission and absorption within tendons.
Main Methods:
- Analysis of tendon composition (collagen, PGs, cells).
- Examination of hierarchical collagen fibril organization using microscopy (SEM, TEM).
- Investigation of tendon crimp structures and their potential role in force transmission.
Main Results:
- Tendons exhibit a multihierarchical structure of collagen fibrils, forming bundles and fibers.
- Collagen fibrils are organized with specific diameters and molecular arrangements.
- Tendon crimps, featuring
- fibrillar crimps
- may flatten during initial stretching, with interfibrillar and molecular mechanisms engaging during further stretching.
Conclusions:
- Tendon structure is highly ordered, optimizing force transmission.
- The unique
- fibrillar crimp
- structure likely plays a key role in initial force absorption.
- Further research is needed to fully understand tendon force transmission mechanisms.
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