
The study on total hip arthroplasty emphasizes the pivotal role of stem size and position in early implant issues and periprosthetic fractures. Six surgeons explored the repercussions of slight deviations from optimal sizing and placement on periprosthetic fracture risk and primary stability. The study on cadaveric femurs revealed significant impacts, including a 320% increase in subsidence with undersized stems and a 52% rise in pull-out forces with oversized stems. Surgeons are cautioned about the potential mechanical alterations and surgical success linked to minor variations in stem parameters.
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