The broken device was received for failure analysis.The fit check was performed with one of the available implant insertion instruments.The broken device was able to fit properly with insertion device (49-1100).The surgeon was performing surgery using alif approach at l5-s1.The rasp/trial used in this case is 40x28x18 which is appropriate for this size.The implant inserter tool is typically impacted with mallet to place the interbody implant at the right location.It is not known whether the levering force was applied on the insertion tool while trying to place the implant into already prepared interbody space.It is also not known whether the levering force was applied on the insertion tool while removing it from the implant.As reported in the complaint the implant broke during implantation.The exact root cause cannot be determined with available information, but the mechanical overstress applied during implantation can not be ruled out in this case.
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