Batch review performed on 21.06.2019: lot: 164724: (b)(4) items manufactured and released on 18.10.2016.Expiration date: 02.10.2021.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been already sold without any other similar reported event.Clinical evaluation performed by medical affairs director: 2 years after primary cementless dm tha the patient reports pain and instability.The intraoperative image supplied does not help in any way, the components seem to be correctly positioned.The surgeon replaced the components with identical ones (same sizes) so we cannot draw any useful hint from the replacements chosen.We are unable to draw any conclusion.Additional implant involved in the event, batch review performed on 21.06.2019: ball heads: mectacer 01.29.202 biolox delta ceramic ball head 12/14 ø 28 size m 0 (k112115) lot.167029.Lot 167029: (b)(4) items manufactured and released on 30.01.2017.Expiration date: 18.01.2022.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been already sold without any other similar reported event.Document review performed by ceramic head manufacturer (ball heads: mectacer 01.29.202 biolox delta ceramic ball head 12/14 ø 28 size m 0 (k112115) lot.167029): due to lack of information of the laser engraving, the identification of the ball head is only possible based on the information provided by medacta.The ball head to the shop order (b)(4).Protocols and certificate of conformance were reviewed.The quality documents show that the values obtained on the ball head were according to the specification valid at the time of production.The component properties at the microstructure as obtained from the quality documents fulfill the requirements as specified at the time of production.There are no indications of any pre-existing material defects.Due to a lack of ceramic parts further investigations cannot be done.
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