Table 6 Top 40 keywords on research of PCD in ONFH

1

Apoptosis

94

21

Hypoxia

9

2

Osteonecrosis

71

22

Mesenchymal stem cells

9

3

Osteonecrosis of the femoral head

44

23

Osteonecrosis of femoral head

9

4

Glucocorticoid

39

24

Bone marrow mesenchymal stem cells

8

5

Femoral head

30

25

Osteogenic differentiation

8

6

Dexamethasone

27

26

Broiler

7

7

Osteoblast

26

27

PI3K

7

8

Osteoblasts

22

28

Bone microvascular endothelial cells

6

9

Autophagy

18

29

Microrna

6

10

Femoral head necrosis

18

30

mTOR

6

11

Angiogenesis

14

31

Necrosis

6

12

Steroid-induced osteonecrosis of the femoral head

14

32

Osteogenesis

6

13

Glucocorticoids

13

33

Proliferation

6

14

Steroid

13

34

Rat

6

15

Akt

11

35

SONFH

6

16

Oxidative stress

11

36

Steroid-induced avascular necrosis of the femoral head (SANFH)

6

17

Exosomes

10

37

Avascular necrosis of the femoral head

5

18

ONFH

10

38

caspase-3

5

19

Steroid-induced avascular necrosis of the femoral head

10

39

Extracellular vesicles

5

20

Avascular necrosis

9

40

HIF-1 alpha

5