(b)(4).Investigation summary: the device was received and evaluated at the service center.The reported complaint that the buttons of the device do not work, was confirmed.It was found that the resistance values of the keypad were out of range.Further, it was found that the motor was corroded and does not run constantly.The motor and the hand control set were replaced and the device was repaired, tested and found to be fully functional.Fluid ingress into the system and contact with the motor is responsible for the corrosion of the motor.The corroded motor has a tendency to stick and not turn.However, given the information provided, we cannot determine a definitive root cause for the defective keypad of the hand control set.The service history has been reviewed in lieu of the device history record for this device since it was previously serviced.The device was last serviced on 04/29/2020 and passed all functional testing before being returned to the customer.At this point in time, no corrective action is required, and no further action is warranted.Depuy mitek will continue to track any related complaints within this device family as a means of monitoring the extent with which this complaint is observed in the field.Udi:(b)(4).
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