Gaps in stent scaffolding and drug application sometimes occur with post-dilation after crush bifurcation stenting. The stent in white is after crush stenting and in red superimposed is the same stent after side-branch post-dilation.
When stents are crushed, especially with classical crush and before kissing post-dilation, there is a “V-shaped” trough between the MB and SB stents on the opposite side to the crushed portion. In this video, by chance, a wire from the MB lumen has passed outside the stents through the trough before entering the SB stent. The post-dilating balloon following this wire had a short course outside both stents. Upon balloon inflation, the stent strut or struts on the luminal side of the wire were pushed out of position causing the gap in stent scaffolding shown in red.