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Batch review performed on 18 june 2019: lot: 166339: (b)(4) items manufactured and released on 25-jan-2017.Expiration date: 2022-01-10.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.Preliminary investigation performed by r&d project manager: base on pictures received is it possible to state the acetabular cup is covered in bio fluids and bone residuals.It is not possible to establish a certain event root cause.Clinical evaluation performed by medical affairs director: less than 1 year after hybrid primary tha, the cup mobilized and was revised.The only radiograph available is probably before revision, after cup loosening, so we cannot evaluate size and position of the cup after surgery.Though no scale references are shown, the patient seems to have very small femoral canals and small and shallow acetabulum, anatomical conditions that may hinder sound fixation and possibly limit range of movement prior to impingement, which seems to have occurred in this case and mobilized the cup.No reason to suspect a faulty device.
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