Done in supine position under ultrasound guidance.
3.5 curvilinear probe or up to 7.5 MHz linear probe. Higher frequency probes are unlikely to be useful.
Visualize femoral vessels and iliopsoas tendon.
Lateral approach
Long blue needle, or black spinal needle deep to iliopsoas tendon at iliopectineal eminence.
Inject 1% lidocaine +/- % Bupivicaine and 1 ml Kenalog/triamcinolone.
Risk of transient femoral nerve palsy
Reference:
http://www.ajronline.org/cgi/content/full/185/4/940. Diagnostic and Therapeutic Use of Sonography-Guided Iliopsoas Peritendinous Injections AJR 2005; 185:940-943
