16 – Position of patient and probe

Place the patient supine with the pelvis elevated by a pillow. Hips and knees are flexed and the thighs are abducted with external rotation.

Place the linear high-frequency probe on a line between the scrotum/mons pubis and the lateral border of the anus on top of the ischiopubic ramus. Visualize the ischiocavernosus muscle on top of the ischiopubic bone.