Figure 4.

Schematic diagram of the Ultrasound-guided Intratissue Percutaneous Electrolysis intervention. The medial edge of the sciatic nerve and associated vessels is represented by the vertical dashed line A. The lateral limit of the semimembranosus tendon is represented by the vertical dashed line B. The needle is inserted into the area bounded by line 1 (perpendicular to the axis joining lines A and B) and by line 2 (tangent to the superior-lateral point of the semimembranosus tendon). In this way, the technique can be performed safely, without structures other than the fibrosis being involved in the intervention.