“Slalom”: Microsurgical Cross-Over Decompression for Multilevel Degenerative Lumbar Stenosis

Figure 2

(a) From [8] with permission. Localization of the levels to be approached. Cannulas are inserted to mark the levels under fluoroscopic control. (b) From [8] with permission. Lateral X-ray with graphic marking of the approach corridors to the levels L3-4-5-S1. Due to the lordotic angle of the lumbosacral junction, the levels L4-5-1 can be approached through one small incision while the other two levels are approached through separate skin incisions (“Giant Slalom”).

(a)

(b)