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Table 4 Summarization of the published articles and the current study regarding the role of Böhler’s angle in assessing the injury severity and functional outcome for displaced intra-articular calcaneal fracture

From: Bohler’s angle’s role in assessing the injury severity and functional outcome of internal fixation for displaced intra-articular calcaneal fractures: a retrospective study

No.

Cases (n)

Treatment (n)

Follow up (year, average (range))

Correlation

Operation

Conservation

1

45

33

18

4.5 (1–11)

A loss of Böhler’s angle measured at follow ups was associated with a poor clinical outcome [27].

2

44

52

0

4-14

The ratio of Böhler’s angle of the fractured side to that of the normal side was significantly lower in patients with unsatisfactory outcomes at final follow up evaluation [28].

3

43

47

0

1

Böhler’s angle measured at the final follow-up did not correlate with the clinical result [20].

4

63

30

33

5.1

No correlation between Böhler’s angle and final functional outcomes [23].

5

88

44

44

2

There was a significant negative correlation between change in Böhler’s angle (angel measured at 3-month minus angle at the time of injury) and SF-36 score in surgical group [13].

6

70

29

41

6.5 (4–15)

Patients with displaced fractures had a good outcome following operative treatment with restored Böhler’s angle>10 degrees [22].

7

26

15

11

15 (11–18)

No correlation between Böhler’s angle and functional outcome [14].

8

16

16

0

2 (1–4)

No correlation between good restoration of Böhler’s angle and high functional score [29].

9

47

47

0

10 (7–15)

Restoration of Böhler’s angle ≥30 degrees was associated with a better outcome [21].

10

274

274

0

6 (4–8)

The preoperative Böhler’s angle has a significant correlation with Sanders classification. The postoperative Böhler’s angle has a significant correlation with the final functional outcome (The current study).