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Table 3 Main clusters of co-cited references

From: Knowledge structure and emerging trends on osteonecrosis of the femoral head: a bibliometric and visualized study

Cluster ID

Size

Silhouette

Label

Mean (year)

#0

32

0.965

Risk factor

2015

#1

31

0.9

Glucocorticoid-induced osteonecrosis

2010

#2

25

0.881

Autologous transplantation

2006

#3

21

0.932

Non-weight bearing

1998

#4

21

0.972

Intertrochanteric osteotomy

1998

#5

21

0.934

Fibular grafting

2001

#6

20

0.915

Prognostic value

1999

#7

19

0.893

Stem cell therapy

2015

#8

19

0.788

t-786c enos polymorphism

2002

#9

17

0.846

Gene expression

2007

#10

17

0.967

Concentrated autologous bone marrow

2010

#11

14

1

Propylene fumarate

2004

#12

14

0.951

Early collapse

2002