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Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_11 | Pages 15 - 15
1 Oct 2015
Kharaz YA Tew S Laird E Comerford E
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Introduction

Tendons and ligaments (TLs) play key roles in the musculoskeletal system. However, they are commonly damaged due to age-related wear and tear or torn in traumatic/sport related incidents resulting in pain and immobility. TLs contain cells and extracellular matrix (ECM) comprised of collagen, elastin, glycoproteins and proteoglycans. Although TLs are composed of similar components, their precise composition and arrangement of matrix macromolecules differ to provide specific mechanical properties and functions. To date little is known about how the main ECM proteins are arranged between the two tissue types. This data will provide essential information on fundamental structure of TLs leading to increased understanding of the function relationship between these tissue types. The aim of this study was to compare tendon-ligament differences in their ECM distribution of collagens, proteoglycans and elastic fibres.

Materials and Methods

Anterior cruciate ligament (ACL) and long digital extensor tendon (LDET) were harvested from disease free cadaveric canine knee joints (n=3). Distributions of the main ECM components were assessed on longitudinal sections of ACL and LDET mid-substance. Antibody staining were assessed for collagen type I, III, VI, agreccan, versican, decorin, biglycan, elastin, fibrillin 1 and fibrillin 2.