Anteroposterior radiographs of the lumbar spine during introperative radioscopy showing the insertion of an Aperius PercLID System at the L3-L4 level. The implant is preassembled on the inserter so it can be inserted without intermediate steps once the desired distraction is achieved. The implant core is manufactured of Titanium alloy (TiAl6V4 alloy) while the external shell is composed of pure Titanium.