Intra-Articular Treatment Strategies for Joint Inflammation

Intra-articular interventions aim to deliver therapeutic agents directly into the joint space to mitigate inflammation and promote tissue repair in conditions such as osteoarthritis and inflammatory arthritis. Strategies include pharmacological injections—such as glucocorticoids, local anaesthetics, hyaluronic acid and novel drug-carrying hydrogels—and biological therapies including mesenchymal stem cells or their secretome. The rationale for local delivery is to achieve high intra-articular drug concentrations with minimal systemic exposure, reducing adverse effects while targeting key inflammatory mediators, chondrocytes and synovial macrophages. Recent advances have focused on optimising drug combinations to enhance anti-inflammatory and chondroprotective actions, refining pharmacokinetic and pharmacodynamic profiles to prolong residence time, and exploring regenerative approaches that modulate the joint microenvironment through paracrine signalling. Preclinical and clinical studies in animal models have elucidated mechanisms by which intra-articular treatments regulate cytokine networks, extracellular matrix turnover and haemostatic pathways within synovial fluid. The global burden of joint disease drives ongoing research into off-the-shelf therapeutics, sustained-release formulations and precision delivery systems to alleviate pain, preserve function and defer surgical interventions.

Research from Nature Portfolio

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Intra-Articular Treatment Strategies for Joint Inflammation publication trend

The graph below shows the total number of articles in intra-articular treatment strategies for joint inflammation across all publications each year (not limited to Nature Index journals).

Technical terms

Synovial fluid: Viscous lubricating fluid within joint cavities that provides nutrition to cartilage and houses inflammatory mediators.

Glucocorticoids: Steroidal anti-inflammatory drugs that suppress cytokine production and immune cell activation when injected intra-articularly.

Hyaluronic acid: A high-molecular-weight polysaccharide that contributes to joint lubrication and may exert anti-inflammatory and chondroprotective effects.

Mesenchymal stem cell secretome: A complex mixture of soluble factors and vesicles released by mesenchymal stem cells with immunomodulatory and regenerative properties.

References

1. The Combination of Glucocorticoids and Hyaluronic Acid Enhances Efficacy in IL-1β/IL-17-Treated Bovine Osteochondral Grafts Compared with Individual Application. International Journal of Molecular Sciences (2023).
2. Disposition and effect of intra-articularly administered dexamethasone on lipopolysaccharide induced equine synovitis. Acta Veterinaria Scandinavica (2019).
3. Treatment Effects of Intra-Articular Allogenic Mesenchymal Stem Cell Secretome in an Equine Model of Joint Inflammation. Frontiers in Veterinary Science (2022).