Fig. 1From: Ultrasound imaging with an electric stimulant was useful in pulsed radiofrequency for chronic knee pain in the medial regionUltrasound imaging at an especially painful point. A Ultrasound pre-scanning of an especially painful point in the superior medial knee joint region. B Ultrasound scanning reveals a cord-like structure (arrow heads) anterior to the sartorius muscle (surrounded by the white dashed line) Back to article page