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The reported event could not be confirmed, since the returned device was received in a damaged state, making proper functional inspection impossible.The device inspection revealed the following: a visual inspection revealed central screw and the baseplate in disassembled condition.The baseplate has few dent marks on the distal surface and contains a single spacer as intended.Furthermore, the device arrived in a disassembled state, a functional inspection was conducted using a returned central screw to evaluate its removal from the baseplate.The screw only seated halfway in the central screw hole, likely due to damaged threads, making full assembly impossible.However, the removal from the halfway point was performed without difficulty, hence the event cannot be confirmed.A review of the device history for the reported lot did not indicate any abnormalities.No corrective actions are required at this time.A review of the labeling did not indicate any abnormalities.However, intra-operative removal of a central screw from an implanted tornier perform reversed glenoid baseplate is not advised.If the central screw does not disengage from the baseplate, a new baseplate with the correct length central screw will need to be implanted.No indications of material, manufacturing or design related problems were found during the investigation.Based on investigation, the root cause was attributed to a user related issue.The event was caused by not following the operative technique and improper handling of the device leading to damaged threads and disassembling impairment.If more information is provided, the case will be reassessed.
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