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On 07/16/2025, it was reported by a sales representative via (b)(4) that an ar-9597-20 angled reamer sleeve was cold welded with inside of the reamer.This was discovered during the case with no patient harm.Additional information was received 7/21/25 that this was discovered during a reverse total shoulder arthroplasty.After the 20 degree mgs augment reamer malfunctioned, the 25 degree primary augment reamer was used to complete reaming.Additional information was provided on 7/24/25 that the sleeve was stuck to the drive shaft.Part number and sn provided.
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Additional information: g3, h3, h6.The complaint device was not received for evaluation.Based on the information provided, which may include the returned device (if available), pictures, videos, event description, and any additional field data, arthrex concluded that the most likely cause of the reported failure.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 does 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.The complaint allegation could not be confirmed, as the device was not received for evaluation, and no evidence of the reported failure was provided.
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