On 22 january 2016, the medical affairs director performed a clinical evaluation and commented as follows: for unknown reasons, this cup was placed very deep inside the acetabular cavity, with an extremely thin bone wall remaining before the cup definitely migrated into the abdomen.The deep cup was probably a surgical situation because an extra long head has apparently been used, so this should not be a case of cup migration.A large radiolucency is visible around the cup and there is no x-ray history that could help understand how it developed.However, the cup looks definitely loose and unable to sustain physiological loads, and revision with a large diameter implant was surely the correct choice.Batch review performed on 02 february 2016.Lot 123268: (b)(4) items manufactured and released on 27 november 2012.Expiration date: 2017-10-31.No anomalies found related to the problem.To date, all (b)(4) items of the same lot have been already sold without any similar reported event.
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