|
Batch review performed on 09 november 2018.Lot 157817: (b)(4) items manufactured and released on 22 april 2016.Expiration date: 2021-01-13.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been already sold without any similar reported event.Clinical evaluation performed on october 26, 2018 by medical affairs director: two years after primary cementless tha the patient laments anterior hip pain and the surgeon decides to change the cup position.The pre-revision radiographs confirm that the cup position (limited anteversion, particularly) may be the cause of pain.It is possible that the cup mobilized slightly immediately after primary surgery, because it was found to be solidly ingrown at 2 years.This problem should not be ascribed to a defect intrinsic to the device.Preliminary investigation performed on november 09, 2018 by r&d product manager: the images show the cup just explanted with blood and biological tissue on its surface.From the images it is not possible to determine any root cause related to the event but, from the received information and images we can probably exclude a failure of the device.
|