Roi-a insert : anchors didn't deploy and broken cage.Surgery on (b)(6) 2018, roi-a insert.Level l5-s1 surgeon chooses to implant a cage 30*39 h14 with anchoring plate size m.Cage was in place, surgeon decided to implant first the anchoring plate towards s1.The impaction has been made without effort until the stop.He noticed that the cage has moving forward and the cage was disassembled from implant holder.Anchoring plate was not totally implanted (~60%) surgeon removed cage and anchoring plate with the hook.He saw that the cage was broken anteriorly.He decided to implant another cage, same size.The assembly of implant to implant holder was verified.It was correct.The new cage was in place and he impacted the same anchoring plate towards s1.Same issue happened.He noticed that the segment is distracted.He concluded that there was hard bone at s1.He removed the cage and anchoring plate.Cage was not broken.He used again this cage because he had no more this size of implant in warehouse.The assembly cage-implant holder is not great because threading is damaged.He used awl starter in l5 but at half impaction, the cage moved forward.Surgeon decided to stop and not implanted any anchoring plates.No anterior plate has been implanted because he hadn't any lumbar anterior plate in the healthcare center.Surgeon considered that cage was stable without fixation.Surgeon decided to set up a specific monitoring of the patient (especially concerning potential migration of implant).No harm to the patient.Delay 15 min.
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