(b)(4).Foreign report source: (b)(6).A cross-sectional study of 300 metal on metal total hip arthroplasties with metal artefact reducing sequence magnetic resonance imaging scanning and longitudinal follow-up at an average of 2 years: high progression rates in patients with established disease under observation (b)(6).1trauma and orthopaedics, (b)(6) hospital, 2radiology, (b)(6) hospital.The device will not be returned for analysis, due to location of device is unknown; however, an investigation of the reported event is in progress.Once the investigation has been completed, a follow-up mdr will be submitted.Multiple mdr reports were filed for this event, please see associated reports: 0001825034-2020-02884.
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