Clinical Research Directory

In the supine position, a high-frequency linear sensor is placed in the anterior superior iliac spine and then aligned with the ramus of the pubis by rotating the probe counterclockwise approximately 45 degrees. The iliopsoas muscle and tendon, femoral artery, and pectineus muscle were observed in this view.The iliopsoas muscle and its tendon are visualized, as well as the vascular and nerve bundle: femoral artery, vein, and nerve. The needle is inserted laterally to medially in a planar approach to place the tip in the musculofascial plane between the psoas tendon anteriorly and the ramus pubis posteriorly. After negative aspiration, local anesthetic will be gradually injected aspirating every 3 mL.

In the supine position, a high-frequency linear sensor is placed in the inguinal fold. Scan starting lateral to the femoral artery and the nerve in the inguinal crease to identify the sartorius muscle, tracing the muscle to its origin to the anterior superior iliac spine. A shadow of the iliac crest bone and iliacus muscle will be visible, with the end point of injection being deep in the fascia iliaca and above the iliacus muscle at the lateral aspect of the iliacus muscle. After negative aspiration, local anesthetic will be gradually injected under the fascial plane, aspirating every 3 mL.