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Elevated fluid and glycosaminoglycan content in the Achilles tendon contribute to higher intratendinous pressures:Implications for Achilles tendinopathy

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Journal of Sport and Health Science 2024年第6期13卷 863-871页

作者： Lauren Pringels Gert-Jan Van Valckenborgh Patrick Segers amelie chevalier Hedwig Stepman Evi Wezenbeek Arne Burssens Luc Vanden Bossche Department of Physical and Rehabilitation Medicine Ghent University HospitalGhent 9000Belgium Department of Rehabilitation Sciences and Physiotherapy Ghent UniversityGhent 9000Belgium Department of Electronics and Information Systems Ghent UniversityGhent 9000Belgium Department of Electromechanics University of AntwerpAntwerp 2020Belgium Department of Laboratory Medicine Ghent University HospitalGhent 9000Belgium Department of Orthopedic Surgery Ghent University HospitalGhent 9000Belgium

Background:Tendinopathy alters the compositional properties of the Achilles tendon by increasing fluid and glycosaminoglycan *** has been speculated that these changes may affect intratendinous pressure,but the extent of this relationship remains ***,we aimed to investigate the impact of elevated fluid and glycosaminoglycan content on Achilles tendon intratendinous pressure and to determine whether hyaluronidase(HYAL) therapy can intervene in this potential ***:Twenty paired fresh-frozen cadaveric Achilles tendons were mounted in a tensile-testing machine and loaded up to 5% *** resting(at 0% strain) and dynamic pressure(at 5% strain) were assessed using the microcapillary infusion ***,intratendinous pressure was measured under native conditions before and after infusion of 2 mL physiological ***,80 mg of glycosaminoglycans were administered bilaterally to the paired *** right tendons were additionally treated with 1500 units of ***,both groups were retested,and the glycosaminoglycan content was ***:It was found that both elevated fluid and glycosaminoglycan content resulted in higher intratendinous resting and dynamic pressures(p <0.001).HYAL treatment induced a 2.3-fold reduction in glycosaminoglycan content(p=0.002) and restored intratendinous ***:The results of this study demonstrated that elevated fluid and glycosaminoglycan content in Achilles tendinopathy contribute to increased intratendinous re sting and dynamic pressures,which can be explained by the associated increased volume and reduced permeability of the tendon matrix,*** degrades glycosaminoglycans sufficiently to lower intratendinous pressures and may,therefore,serve as a promising treatment.

关键词： Achilles tendon Achilles tendinopathy Intratendinous pressure Glycosaminoglycans Tendon fluid

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