Table 1 Demographic information

Age (year), median (IQR)

52, (34.25,62)

Male, n(%)

40(80%)

Location

 Tibia, n(%)

17(34%)

 Femur, n(%)

10(20%)

 Heel bone, n(%)

7(14%)

 Sternum, n(%)

5(10%)

 metatarsal bone, n(%)

2(4%)

 Humerus, n(%)

2(4%)

 other, n(%)

5(10%)

Route of infection

 Infection after internal fixation of the fracture

62%

 Hematogenous osteomyelitis

12%

 Bone adjacent tissue infection

12%

 Infection after open-heart surgery

10%

 Infection around hip replacement prosthesis

2%

 Infection after arthroscopic knee surgery

2%

History

 More than 2 surgeries

52%

 Combined hypertension

26%

 Complicated diabetes

24%

 First surgery at enrollment

14%