Orthop J Sports Med. 2018 Feb 22;6(2):2325967118756576.doi: 10.1177/2325967118756576. eCollection 2018 Feb
In the lower extremity, ultrasound-guided injections at the knee, ankle, and foot have superior efficacy to landmark-guided injections. Conclusive evidence is not available regarding improved efficacy of ultrasound-guided injections of the hip, although landmark-guided injection is performed less commonly at the hip joint. Ultrasound-guided injections are overall more accurate than landmark-guided injections.