,I then continued the laminectomy removing all of the lamina of L5 and of L4, removing the ligamentum flavum between L3-L4, L4-L5 and L5-S1. 
,I then continued the laminectomy removing all of the lamina of L5 and of L4 , removing the ligamentum flavum between L3 - L4 , L4 - L5 and L5 - S1 .