Table 1 Demographics and comorbidities of 112 patients

Age^a

65.5 ± 9.2

Female sex^b

77 (69%)

Body mass index^a

31.9 ± 4.8

Laterality^b

 Right knee

64 (57%)

 Left knee

48 (43%)

Comorbidities^b

 Hypertension

56 (50%)

 Hyperlipidemia

16 (14%)

 Diabetes mellitus

18 (16%)

 Psychiatric illness

10 (8.9%)

 Gastroesophageal reflux disease

3 (2.7%)

 Asthma

1 (0.9%)

 Obstructive sleep apnea

10 (8.9%)

 Chronic kidney disease

5 (4.5%)

 History of cancer

7 (6.3%)

 Venous thromboembolism

3 (2.7%)

 Atrial fibrillation

3 (2.7%)

 Cerebrovascular accident

1 (0.9%)

 Rheumatoid arthritis

1 (0.9%)