Osteoarthritic Mechanisms and Therapeutic Approaches in Knee Ligaments

Osteoarthritis of the knee often follows injury to key stabilising ligaments, notably the anterior cruciate ligament (ACL), and involves complex interactions between mechanical overload, biochemical mediators and tissue remodelling. In the injured joint, persistent inflammation driven by cytokines such as interleukin-1β and tumour necrosis factor-α promotes degradation of the extracellular matrix within ligaments and adjacent cartilage. Vascular invasion and altered cellular phenotypes within the ligament substance further undermine structural integrity, while suboptimal repair responses permit progressive joint instability. Therapeutic strategies increasingly target both disease mechanisms and symptomatic relief: anti-inflammatory agents aim to halt cytokine-driven matrix breakdown; biologics and small molecules seek to modulate key signalling pathways involved in cell survival and regeneration; and novel biomaterials and gene-delivery systems are under evaluation to support ligament repair and cartilage preservation. A better understanding of mechanotransduction in ligament cells and cross-talk between synovium, cartilage and subchondral bone is crucial to develop disease-modifying treatments that restore joint homeostasis and reduce global disability from knee osteoarthritis.

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Osteoarthritic Mechanisms and Therapeutic Approaches in Knee Ligaments publication trend

The graph below shows the total number of articles in osteoarthritic mechanisms and therapeutic approaches in knee ligaments across all publications each year (not limited to Nature Index journals).

Technical terms

Anterior cruciate ligament (ACL): A major stabilising ligament of the knee joint that restricts anterior translation of the tibia.

Posttraumatic osteoarthritis (PTOA): Degenerative joint disease arising as a secondary consequence of injury.

Chondrocyte: Cartilage-resident cell responsible for synthesis and maintenance of the extracellular matrix.

Synovium: Membranous tissue lining the joint capsule that produces synovial fluid and mediators of inflammation.

NF-κB pathway: A central intracellular signalling cascade regulating expression of pro-inflammatory genes.

AMPK pathway: An energy-sensing kinase cascade that influences cellular metabolism, survival and autophagy.

Extracellular matrix (ECM): The network of collagen, proteoglycans and other proteins providing structural support to tissues.

References

1. The Effects of an Osteoarthritic Joint Environment on ACL Damage and Degeneration: A Yucatan Miniature Pig Model. Biomolecules (2023).
2. Topical application of Chinese herbal medicine DAEP relieves the osteoarthritic knee pain in rats. Chinese Medicine (2019).
3. Hesperetin Exhibits Anti-Inflammatory Effects on Chondrocytes via the AMPK Pathway to Attenuate Anterior Cruciate Ligament Transection-Induced Osteoarthritis. Frontiers in Pharmacology (2021).