Figures & data
Figure 3 The way of puncture according to the principle of square triangles (A): location of targeted stones; (B): is the projection of A on the dorsal plane when the C-arm is perpendicular to this plane; (C): needle entry point.
![Figure 3 The way of puncture according to the principle of square triangles (A): location of targeted stones; (B): is the projection of A on the dorsal plane when the C-arm is perpendicular to this plane; (C): needle entry point.](/cms/asset/3df4ebf4-6f8a-4e58-be6f-050a634fa61d/drru_a_12300670_f0003_c.jpg)
Table 1 Demographic and Clinical Characteristics
Table 2 Intraoperative Characteristics
Table 3 Postoperative Characteristics
Table 4 Follow-Up Characteristics