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Additional information: d9, g3, h3, h6.- one unpackaged ar-9676, angled reamer, drive shaft, batch 022406, was received for investigation.- visual evaluation of the returned device noted grind marks on both the distal and proximal end.- functional testing was performed with a known-good ar-9597-10 and resistance was felt when rotating the device within the cannulated shaft.- the most likely cause for the reported failure can be attributed to misuse due to a force perpendicular to the drive shaft being applied while the device is spinning.This applied force creates an excess of friction and heat that ultimately has the potential to cause the device to cease functioning as intended.Application of this force perpendicular to the drive shaft is not needed for the device to function, nor is it recommended that the user do this during normal clinical use.When used usually, this issue is unlikely to present itself, which suggests that the handling of the device greatly impacts whether or not it will seize.For this reason, the direct cause is considered to be device misuse.- refer to investigation photos.- complaint allegation is confirmed.
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