|
Batch review performed on 31 august 2021 lot 092857: (b)(4) items manufactured and released on 08-march-2010.Expiration date: 2015-01-31.No anomalies found related to the problem.To date, all items of the same lot have been sold without any similar reported event on this lot since 2017.Clinical evaluation performed by medical affairs director.Ten years after primary cementless tha in a rather heavy male patient the stem gets loose and needs revision.The quality of the xray images available does not allow precise evaluation of the radiological situation, but no macroscopical anomalies are visible.Aseptic loosening is a possible adverse event following tha, described in literature, and its probability increases with time.No further conclusion can be drawn to date with the information at hand.Preliminary investigation performed by r&d project manager.Looking at the images attached to the complaint it is visible the expianted stem with some bloods residuals on the whole body.The ha coating on the stem body has been completely absorbed by patient bone as expected.Some signs and scratches are present on the neck surface due to revision surgery.In the images are visbile also expianted pe liner and femoral head.It is not possible to determine the root cause of reported patient pain and loosening of expianted stem.
|