Based on the information provided, review of the surgical technique manual, ifu, certificates of analysis and fmeas, there is no indication of device failure and no indication that the device was out of specification.The most probable root cause is user error; improper implant size selection, using an implant that was too long, or installing the implant too deep.
Event or Problem Description
The patient had left side si joint arthrodesis in (b)(6) 2018 where three implants were placed.The patient later reported pain complaints.The most superior implant was malpositioned and likely impinging on the neuroforamen.In (b)(6) 2018, the surgeon performed a revision procedure where he removed the superior positioned implant and filled the explant void with bone graft.No other preexisting implants were adjusted or removed.The status of the patient following the revision procedure is not known.