Current information is insufficient to permit a conclusion as to the cause of the event.Review of device history records show the lot released with no recorded anomaly or deviation.There are warnings in the package insert that state that this type of event can occur: under possible adverse effects, #5.Loosening or migration of the implants can occur due to loss of fixation, trauma, malalignment, bone resorption and/or excessive activity.(b)(4).
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Concomitant medical product: hybrid glenoid base, catalog#: 113954, lot#: 310890.Hybrid glenoid porous titanium glenoid post regenerex, catalog#: pt-113950, lot#: 166530.Comprehensive shoulder system mini humeral stem, catalog#: 113630, lot#: 951160.Comprehensive shoulder system standard taper adaptor, catalog#: 118001, lot#: 367140.Reported event was confirmed by review of medical records provided.Medical records report slight proximal migration of the humeral head on x-ray.X-ray review also indicates progressive radiolucency in zones 1, 2, 3, 4, 5, and 6.Device history record (dhr) was reviewed and showed the lot released with no deviations or anomalies.Review of the complaint history determined that no further action(s) is/are required.Root cause was unable to be determined as the necessary information to adequately investigate the reported event was not provided.If any further information is found which would change or alter any conclusions or information, a supplemental will be filed accordingly.Zimmer biomet will continue to monitor for trends.Multiple mdr reports were filed for this event, please see associated reports: 1825034-2017-00314, 03538, 03539.
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It is reported that slight proximal migration of the humeral head was found on x-ray approximately 12 months post left left shoulder replacement implantation.X-ray review also indicates progressive glenoid component radiolucency in zones 1, 2, 3, 4, 5, and 6.Patient was asymptomatic.No revision has been reported.
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