Chondrotoxicity of Local Anesthetics in Articular Cartilage

Local anaesthetics are routinely administered into synovial joints to provide postoperative or diagnostic analgesia, yet mounting evidence indicates that these agents can exert deleterious effects on articular cartilage. Toxicity manifests as dose- and time-dependent chondrocyte death, often driven by mitochondrial dysfunction, oxidative stress and activation of apoptotic pathways. Subsequent loss of matrix components, notably collagen and proteoglycans, undermines the tensile and compressive properties of cartilage explants and may accelerate degenerative joint changes. Comparative in vitro studies have revealed that lidocaine and bupivacaine possess higher chondrotoxic potential than ropivacaine, and that single exposures can induce persistent mechanical deficits in cartilage explants. Strategies to mitigate toxicity include co-administration of protective agents such as hyaluronic acid, which appears to stabilise cell membranes and preserve matrix integrity, and combinations with glucocorticoids or platelet-rich plasma. These findings have global relevance for clinical practice, emphasising the need for judicious choice of anaesthetic agent, appropriate dosing regimens and exploration of adjunctive therapies to safeguard joint health.

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Chondrotoxicity of Local Anesthetics in Articular Cartilage publication trend

The graph below shows the total number of articles in chondrotoxicity of local anesthetics in articular cartilage across all publications each year (not limited to Nature Index journals).

Technical terms

Chondrotoxicity: Toxic effect leading to chondrocyte dysfunction or death.

Chondrocyte: Specialized cell responsible for synthesis and maintenance of cartilage extracellular matrix.

Articular cartilage: Smooth hyaline cartilage covering joint surfaces, enabling low-friction movement.

Local anaesthetic: Pharmacological agent that reversibly blocks nerve conduction to provide regional analgesia.

Hyaluronic acid: Naturally occurring glycosaminoglycan in synovial fluid that lubricates joints and supports cartilage health.

References

1. Chondrotoxicity of Intra-Articular Injection Treatment: A Scoping Review. International Journal of Molecular Sciences (2024).
2. Hyaluronic Acid as a Carrier Supports the Effects of Glucocorticoids and Diminishes the Cytotoxic Effects of Local Anesthetics in Human Articular Chondrocytes In Vitro. International Journal of Molecular Sciences (2021).
3. The Longer-Term Effects of a Single Bupivacaine Exposure on the Mechanical Properties of Native Cartilage Explants. Cartilage (2023).