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The dhr was reviewed.The devices meet dimensional specifications.The ncm log was reviewed and no ncms have been observed for these lots.There are no other complaints reported for the subject lot numbers.The cited reason for revision was stem loosening/subsidence.The patient experienced a periprosthetic femoral fracture at the primary surgery and cerclage cable used for reduction.Post-operative radiographs indicate the stem was properly aligned.The revising surgeon indicated that the femoral stem may have been undersized.The femoral stem, femoral head, and acetabular were revised, while the acetabular cups was left in-situ.Stem subsidence can be caused by multiple factors, including, but not limited to patient factors (e.G.Bone quality, comorbidities, patient activity) and surgical technique (e.G.Implant selection and alignment).The revision cannot be attributed to device malfunction based on the provided information.
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