Hip fracture is a worldwide public health problem that primarily affects osteoporotic individuals and the elderly. A second hip fracture can occur in elderly patients who have already suffered an initial hip fracture. The aim of this study was to investigate possible risk factors for second hip fractures in elderly patients with hip fractures.

A second hip fracture reportedly occurs in 2-10% of elderly patients who have already suffered an initial hip fracture. The risk factors for first hip fractures have been well established in previous studies. Several authors have also attempted to define the possible risk factors for second hip fractures, with osteoporosis and comorbidities suggested to be the primary factors. 

Between 2010 and 2014, 230 patients who underwent uncemented bipolar hemiarthroplasty for hip fractures were retrospectively analyzed. The patients were divided into two groups: those with a first hip fracture (group 1) and those with a second hip fracture (group 2).

The mean time from the first hip fracture to second hip fracture was 22 months. There were no significant differences in the American Society of Anesthesiologist scores, comorbidities were observed in the two groups. The mean length of hospitalization was not significantly different between the two groups. The mean postoperative functional scores after second hip fractures were significantly lower in group 2 than in group 1.

Researchers found that the postoperative functional results were significantly lower following second hip fractures. This result can be attributed to the fact that a second injury may increase the possibility of being confined to bed and receiving familial support. Therefore, rehabilitation is essential for patients with second hip fractures in order to ensure that they regain mobility.

Study limitations include its retrospective design and small sample size. In addition, researchers did not examine the association between second hip fractures and familial factors, social factors or pharmaceutical preparations. Nonetheless, researchers believe that our study provides further understanding of the possible risk factors associated with second 

Although there are not certain risk factors for second hip fractures in elderly patients with hip fractures, to prevent second hip fractures, elderly patients should be provided with physical and medical therapy as well as orthotic support and their functional activity should be maintained.