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In a large population-based study of hip fracture recurrence in Rochester, Minnesota, the overall risk of any recurrence, ipsilateral or contralateral, was estimated to be 29% by 20 years after initial fracture, 1.6 times greater than expected. The risk of recurrence was greater in patients who had initial fractures associated with moderate trauma and in younger patients. The increased risk among women compared to men was eliminated when the degree of trauma was considered. Ipsilateral recurrence at the same fracture site was less frequent than expected, and the overall increased risk was primarily due to contralateral fractures at the initial fracture site (cervical or intertrochanteric). There was no difference in recurrence rate with respect to site or side of the initial fracture, and no concentration of recurrences was observed for any particular time interval following the first hip fracture.
Melton et al. (Thu,) studied this question.