Through a vertical lateral lumbar incision 31 pelvi-ureterolithotomies in 30 patients were performed

the incision is suitable to ureteral stones located between the lower borber of L2 and the upper borber of L5 and to single extfarenal pelvic stones. This incision is made through the intermuscular space

with less trauma

less bleeding and less complication and most patients recovered quickly. This procedure is particularly useful for simultaneous bilateral lithotomy in those patients with poor general condition