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Reported event: an event regarding crack/fracture involving an exeter stem was reported.The event was confirmed via inspection of the returned device.Method & results: -product evaluation and results: visual inspection of the returned device indicated in mar report.The image depicted shows the exeter v40 stem with fracture location highlighted.The fracture occurred through the distal portion of the stem.On visual examination, the fracture was observed approximately 35 mm from the distal tip.Stereo microscope imaging was performed on both the distal and proximal fracture surfaces, respectively.Based on macroscopic surface features observed, including beach marks, the approximate location of origin (o) and direction of propagation (p) were determined.Nothing could be learned of the final fracture location due to post fracture abrasion and explantation damage.The macroscopic surface features observed on the fracture surface indicate the component fracture propagated in fatigue.Figure shows explantation damage which was observed on the distal portion of the stem.Material analysis: review of the exeter stem, catalogue # 0580-1-044, lot code g3583367 confirmed a fracture through the distal tip of the stem.Characterisation using stereo microscopy and scanning electron microscopy confirmed fracture to have propagated in fatigue.Due to the extensive mechanical damage on both fracture surfaces, nothing could be learned of the mode of final fracture.No manufacturing or material related defects were observed on the device surfaces examined.-clinician review: no medical records were received for review with a clinical consultant.-product history review: review of the device history records indicate devices were manufactured and accepted into final stock with no relevant reported discrepancies.-complaint history review: there have been no other similar events for the lot referenced.Conclusions: it was reported that the patient was revised due to fracture of the stem.Visual inspection of the returned device indicated in mar report.The image depicted 1 shows the exeter v40 stem with fracture location highlighted.The fracture occurred through the distal portion of the stem.On visual examination, the fracture was observed approximately 35 mm from the distal tip.Stereo microscope imaging was performed on both the distal and proximal fracture surfaces, respectively.Based on macroscopic surface features observed, including beach marks, the approximate location of origin (o) and direction of propagation (p) were determined.Nothing could be learned of the final fracture location due to post fracture abrasion and explantation damage.The macroscopic surface features observed on the fracture surface indicate the component fracture propagated in fatigue.Figure shows explantation damage which was observed on the distal portion of the stem.Material analysis: review of the exeter stem, catalogue # 0580-1-044, lot code g3583367 confirmed a fracture through the distal tip of the stem.Characterisation using stereo microscopy and scanning electron microscopy confirmed fracture to have propagated in fatigue.Due to the extensive mechanical damage on both fracture surfaces, nothing could be learned of the mode of final fracture.No manufacturing or material related defects were observed on the device surfaces examined.No further investigation for this event is possible at this time.If additional information become available to indicate further evaluation is warranted, this record will be reopened.
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