 Microscopic-assisted revision of bilateral decompressive lumbar laminectomies and foraminotomies at the levels of L3-L4, L4-L5, and L5-S1.,2. 
Microscopic - assisted revision of bilateral decompressive lumbar laminectomies and foraminotomies at the levels of L3 - L4 , L4 - L5 , and L5 - S1.,2 .