It was reported that during cori tka procedure, while the patient was under anesthesia, after calibrating the handpiece, they ran the test spin.They passed calibration, but could not pass divot check.They exited out of case, re-entered case, failed to pass divot check.Tried again, created a new case, but still failed.Powered down the system, created new case, failed.Tried other divot, failed.They used another drill attachment again and passed and were able to complete the procedure with a delay of fewer than 30 minutes.The investigation found that the drill attachment was hot to the touch and was found with debris on the lower bearing.
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