This process was then repeated in similar fashion at L4-L5, again with placement of a 10-mm height by 26-mm length Capstone spacer, again containing BMP and again with initial placement of a BMP sponge with vertebral autograft anteriorly within the interspace. 
This process was then repeated in similar fashion at L4 - L5 , again with placement of a 10 - mm height by 26 - mm length Capstone spacer , again containing BMP and again with initial placement of a BMP sponge with vertebral autograft anteriorly within the interspace .