Objective To explore the prevalence of knee osteoarthritis and the influencing factors of comorbidities in people aged ≥60 years old in Chengdu area.
Methods A retrospective study was conducted for 168 patients aged ≥60 years old with knee osteoarthritis in the hospital from May 2021 to June 2023. Relevant materials of patients with knee osteoarthritis were collected, and prevalence of the disease was analyzed. Patients were divided into comorbidity group (n=92) and non-comorbidity group (n=76) based on the comorbidity status. Logistic regression analysis was used to explore the influencing factors of comorbidities.
Results Among 168 patients aged ≥60 years old with knee osteoarthritis, there were 107 females (63.69%) and 61 males (36.31%); 66 patients (39.29%) were aged 60 to 70 years old, and 102 patients (60.71%) were older than 70 years old; 81 patients (48.21%) resided in rural area, and 87 patients (51.79%) resided in urban area; 92 patients (54.76%) had one comorbidity at least, specifically including 53 cases of dyslipidemia, 38 cases of cardiovascular and cerebrovascular diseases, 35 cases of hypertension, 28 cases of type 2 diabetes, 13 cases of chronic kidney disease, and 11 cases of depression. There were significant differences in age, duration of knee osteoarthritis, body mass index, occupation, history of knee surgery, time of daily physical exercise, knee joint function score, and the proportion of cases preferring spicy and greasy food between the comorbidity group and the non-comorbidity group (P < 0.05). Multivariate Logistic regression analysis showed that age (OR=1.561, 95%CI, 1.183 to 2.078), body mass index (OR=2.439, 95%CI, 1.740 to 3.225), occupation (OR=1.446, 95%CI, 1.065 to 1.944), duration of knee osteoarthritis (OR=2.680, 95%CI, 1.830 to 3.447), history of knee surgery (OR=1.772, 95%CI, 1.313 to 2.336), time of daily physical exercise (OR=1.691, 95%CI, 1.221 to 2.174), knee joint function score (OR=2.023, 95%CI, 1.573 to 2.859), and preference for spicy and greasy food (OR=1.842, 95%CI, 1.195 to 2.841) were influencing factors of comorbidities in patients with knee osteoarthritis (P < 0.05).
Conclusion The knee joint function of people aged ≥60 years old in Chengdu area is poor, and the incidence of complications is high. It is necessary to strengthen the health management of patients with knee osteoarthritis, encourage active exercise, maintain a healthy diet and normal body weight, and reduce the impact of knee osteoarthritis on their qualities of life.
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