(b)(4).Investigation summary: the device was received and evaluated at the service center.The reported complaint that the buttons of the device doesn't work was confirmed.It was found that the resistance values of the keypad of the hand control set was out of specifications.Further, it was found that there was a short circuit in the cable, and that the motor shaft was stuck.The motor, motor cable and the hand control set were replaced and the device was repaired, tested and found to be fully functional.Fluid ingress into the device is one possible root cause of the damage to the motor and the motor cable, resulting in short circuit.However, given the information provided, we cannot determine a definitive root cause for the same, along with that for the defective keypad of the hand control set.A manufacturing record evaluation was performed for the finished device (serial number: (b)(4)), and no non-conformances were identified.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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