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Table 1 Patients’ demographic and surgical data

From: Active unicameral bone cysts: control firstly, cure secondly

Patients number

Cyst length (cm)

Epiphyseal length (cm)

Cyst size*

Cyst location

Prior fracture

Times of treatment

Transform latent after one treatment

Duration of follow-up (month)

Curative effect

Complication

1

5.8

3

1.9

Proximal humerus

No

1

No

25

Failure

Fracture

2

8.3

5.7

1.5

Distal femur

No

1

Yes

40

Healed

None

3

8.2

5.2

1.6

Proximal tibia

No

1

Yes

51

Healed with defects

None

4

6.3

3.2

2.0

Proximal femur

No

1

Yes

33

Healed

None

5

7.5

5.3

1.4

Proximal tibia

No

1

Yes

76

Healed

None

6

7.08

4.8

1.5

Distal femur

No

2

No

65

Healed

None

7

5.9

3.9

1.5

Proximal femur

No

1

Yes

45

Healed

None

8

5.6

2.6

2.2

Proximal humerus

No

2

No

27

Healed

None

9

2.6

1.8

1.4

Proximal femur

Yes

1

Yes

30

Healed

None

10

3.8

2.4

1.6

Proximal humerus

Yes

1

Yes

26

Healed with defects

None

11

4.5

2.1

2.1

Proximal humerus

No

2

No

31

Healed with defects

None

12

4.6

2.7

1.7

Proximal tibia

No

1

Yes

26

Healed

None

13

4.1

3.4

1.2

Proximal humerus

No

1

Yes

78

Healed

None

14

5.5

2.7

2.0

Proximal femur

No

1

Yes

34

Healed

None

15

4.8

2

2.4

Proximal humerus

No

1

Yes

52

Healed

None

16

9.9

3.8

2.6

Proximal humerus

No

1

Yes

80

Healed with defects

None

17

4.7

3

1.6

Proximal femur

No

1

Yes

29

Healed

None

18

4.2

3.2

1.3

Proximal humerus

Yes

1

Yes

26

Healed

None

19

5.3

3.2

1.7

Proximal humerus

Yes

2

No

82

Healed with defects

None

20

9.9

3.8

2.6

Proximal humerus

Yes

1

Yes

58

Healed

None

21

5.2

3.9

1.3

Proximal humerus

No

2

Yes

36

Persistent cyst

None

22

4.9

3.1

1.6

Proximal humerus

Yes

1

Yes

37

Healed

None

23

4.7

3.3

1.4

Proximal femur

Yes

1

Yes

76

Healed

None

24

6.2

1.8

3.4

Proximal tibia

No

1

No

49

Healed

None

25

5.4

3.3

1.6

Proximal humerus

Yes

2

Yes

24

Persistent cyst

None

26

4.8

3.2

1.5

Proximal humerus

No

1

Yes

36

Healed

None

  1. *Cyst size was defined as the ratio of the cyst length to the adjacent epiphysis length