Increased Risk of Peripheral Arterial Disease After Hip Replacement: An 11-Year Retrospective Population-Based Cohort Study

The correlation between hip replacement (Hip-Rep) and peripheral arterial disease (PAD) remains uncertain. Thus, we investigated the relationship between Hip-Rep and risk of developing PAD in a nationwide retrospective cohort study. National Health Insurance data were used to assemble a cohort of patients who were diagnosed from 2000 to 2011. Patients with a history of PAD were excluded. A total of 5284 patients who received a Hip-Rep and 21,124 matched controls were enrolled. We used Cox proportional hazards regression model to analyze the adjusted risk of developing PAD. The risk of developing PAD in the Hip-Rep group was 1.24-fold higher (95% CI = 1.05–1.48) than that in the control group. The adjusted risk of developing PAD increased with patient age; compared with patients aged 50 years or younger, the risk among those ages at least 80 years was 4.87-fold higher. Patients with diabetes exhibited the highest risk of developing PAD (HR = 1.58, 95% CI = 1.34–1.86). Compared with patients who had not received a Hip-Rep or reported any comorbidity, patients who received a Hip-Rep were 2.45-fold more likely to develop PAD (95% CI = 1.54–3.89); the risk increased with the number of comorbidities. Hip-Reps might be independently linked with an increased risk of developing PAD. The impact of Hip-Reps on this risk was greater in women and patients ages 65 years and younger and within the first year of follow-up.