The intraarticular route involves injecting medication directly into the cavity of a synovial joint. This method allows high local concentrations of a drug to reach the affected tissues while minimizing systemic side effects. It is frequently utilized in orthopedic and rheumatological care to manage localized joint pain, inflammation, and degenerative conditions. Nurses must understand that this is an invasive procedure requiring strict sterile precautions to prevent deep-seated joint infections.
Intraarticular therapy is prescribed for various inflammatory and degenerative joint disorders. The most common indications include osteoarthritis, rheumatoid arthritis, acute gouty arthritis, and adhesive capsulitis.
Before an intraarticular injection, the nurse must conduct a thorough clinical assessment. Check the patient's medical history for active local or systemic infections, as injecting into an infected joint is strictly contraindicated. Review current coagulation profiles, especially if the patient takes anticoagulants or antiplatelet drugs, to mitigate bleeding risks. Inspect the skin over the target joint for abrasions, rashes, or signs of cellulitis. Finally, verify informed consent and explain the procedure to alleviate patient anxiety.
Administering intraarticular medications demands meticulous adherence to aseptic technique. The nurse assists the healthcare provider by preparing sterile equipment, cleaning the injection site with an antiseptic solution like chlorhexidine, and maintaining a sterile field. The skin must dry completely to allow the antiseptic to exert its antimicrobial effect. Following the injection, the nurse ensures a sterile adhesive bandage is applied to the puncture site.
Post-procedure care focuses on monitoring for immediate adverse reactions and educating the patient on joint management. The nurse observes the patient for vasovagal episodes, excessive pain, or bleeding at the injection site. Instruct the patient to rest the joint for 24 to 48 hours and avoid high-impact activities. Applying ice packs can help manage minor post-injection soreness. Provide clear instructions on when to contact the clinic if warning signs develop.
Although generally safe, intraarticular injections carry potential risks that require vigilance. Septic arthritis is a severe complication presenting with worsening pain, fever, and joint warmth days after the procedure. Post-injection flare and tendon rupture are other localized risks, while systemic absorption of corticosteroids can temporarily elevate blood glucose levels in diabetic patients. The nurse must promptly report signs of infection or unusual symptoms to the attending physician.