Anatomical Landmarks for Intraarticular Knee Steroid Injections

Primary Approach: Superolateral (Lateral Midpatellar) Portal

The superolateral approach is the recommended anatomical landmark for intraarticular knee steroid injection, achieving the highest accuracy rate of 91-93% when using anatomical landmarks alone, as recommended by the European League Against Rheumatism (EULAR) 1, 2, 3
The lateral midpatellar approach is superior to other anatomical landmarks based on systematic review evidence showing it achieves 91% pooled accuracy (95% CI 84-99%) across patients with different arthropathies, according to the European League Against Rheumatism (EULAR) 1, 2, 3

The EULAR guidelines note that while ultrasound improves accuracy, clinical outcomes are similar between ultrasound-guided and landmark-guided injections for the knee, with ultrasound guidance achieving 95.8% accuracy versus 77.8% with anatomical landmarks alone (odds ratio 6.4, 95% CI 2.9-14) 1, 2, 3

Strict aseptic technique is mandatory for all intraarticular injections to minimize infection risk (0.035% or 3 per 7,900 procedures), as emphasized by the European League Against Rheumatism (EULAR) 1, 2, 3
The use of surgical gloves, preparation of skin with alcohol, iodine disinfectant, or chlorhexidine, and changing needles between drawing the medication and injecting into the joint are essential for maintaining aseptic technique, as recommended by the European League Against Rheumatism (EULAR) 1, 2, 3