Degenerative tendon tissue

Degenerative tendon tissue refers to tendon matrix and resident cell populations that have undergone chronic pathological changes, usually due to overuse, aging, mechanical stress, or systemic disease. Such tissue displays disorganized collagen architecture, increased type III collagen relative to type I, elevated fibronectin and proteoglycan content, altered expression and activity of matrix metalloproteinases (MMPs), and persistent low-grade inflammation. Cellular changes include loss of tenocyte integrity, expansion of tendon stem/progenitor cells with altered differentiation capacity, and infiltration by inflammatory and vascular cells. These biochemical, cellular, and mechanical changes reduce tensile strength, impair repair, and lead to clinical manifestations of tendinopathy and failed tendon healing[2][1][3][4]. Scientific and clinical research focuses on modulating *components* of this tissue (e.g., collagen types, MMPs, growth factors) or influencing cell populations within degenerative tissue, but the tissue itself is not a molecular entity or direct drug target[1][2][3].

Other names

Tendinopathic tissueDegenerated tendonChronic tendinopathy tissueDiseased tendon tissue