Intra-articular corticosteroids. Guide to selection and indications for use

Area of Science:

• Rheumatology
• Pharmacology
• Immunology

Background:

• Intra- and periarticular corticosteroids have been used for rheumatic diseases for 50 years.
• Limited publications exist on mechanisms, pharmacokinetics, and comparative safety/efficacy of these agents.
• Knowledge gaps hinder scientific drug selection and understanding of long-term joint outcomes.

Purpose of the Study:

• To review the mechanisms of action, pharmacokinetics, safety, and efficacy of intra-articular corticosteroids.
• To provide guidance on the judicious use of these agents in treating musculoskeletal conditions.
• To assess the benefits and safety in specific populations like juvenile arthritis.

Main Methods:

• Literature review of publications on intra- and periarticular corticosteroids.
• Examination of pharmacokinetic data for agents like triamcinolone hexacetonide.
• Analysis of reported outcomes and adverse effects from clinical use.

Main Results:

• Triamcinolone hexacetonide exhibits prolonged joint retention (2-3 weeks) due to low solubility.
• Corticosteroids may reduce inflammation by down-regulating pro-inflammatory protein gene expression.
• Judicious use provides temporary pain and inflammation reduction, improving motion and function in selected cases.

Conclusions:

• Intra-articular corticosteroids are beneficial for temporary symptom management in musculoskeletal conditions.
• Use in juvenile arthritis appears safe and effective.
• Infection is a primary contraindication; limit injections to 4 or fewer per joint annually to minimize adverse effects.