|
Analysis item
|
Studies
|
Patients
|
Heterogeneity
|
Statistical method
|
Effect estimate
|
P value
|
|---|
|
I2
|
p
|
|---|
|
Radiographic outcomes
|
|
Carrying angle
|
2
|
182
|
0%
|
0.95
|
MD (IV, random, 95% CI)
|
−0.08 (−0.90, 0.73)
|
0.85
|
|
Loss of carrying angle
|
4
|
297
|
0%
|
0.97
|
MD (IV, fixed, 95% CI)
|
−0.17 (−0.72, 0.38)
|
0.55
|
|
Baumann angle
|
2
|
182
|
0%
|
0.63
|
MD (M-H, fixed, 95% CI)
|
1.10 (−0.20, 2.40)
|
0.10
|
|
Change of Baumann angle
|
5
|
349
|
0%
|
0.86
|
MD (IV, random, 95% CI)
|
0.14 (−0.27, 0.54)
|
0.51
|
|
Functional outcomes
|
|
Criteria of Flynn, excellent
|
7
|
792
|
0%
|
0.81
|
RR (IV, random, 95% CI)
|
1.05 (0.97, 1.14)
|
0.34
|
|
Criteria of Flynn, good
|
6
|
592
|
0%
|
0.92
|
RR (IV, random, 95% CI)
|
0.92 (0.60, 1.41)
|
0.71
|
|
Full return to function
|
2
|
112
|
0%
|
0.48
|
RR (M-H, fixed, 95% CI)
|
1.00 (0.91, 1.09)
|
0.96
|
|
Loss of elbow flexion
|
3
|
337
|
0%
|
0.91
|
MD (IV, random, 95% CI)
|
−0.18 (−1.65, 1.29)
|
0.81
|
|
Loss of elbow extension
|
3
|
335
|
0%
|
0.91
|
MD (IV, random, 95% CI)
|
−0.04 (−0.01, 0.09)
|
0.12
|
|
Complications
|
|
Pin tract infection
|
4
|
337
|
0%
|
0.66
|
RR (M-H, fixed, 95% CI)
|
0.89 (0.37, 2.14)
|
0.80
|
|
Superficial infection
|
4
|
337
|
0%
|
0.58
|
RR (M-H, fixed, 95% CI)
|
0.87 (0.31, 2.44)
|
0.80
|
|
Reoperation
|
2
|
112
|
NA
|
NA
|
RR (M-H, fixed, 95% CI)
|
6.56 (0.35, 121.80)
|
0.21
|
- Mild or major displacement (change of the Baumann angle) based on the criteria of Skaggs et al. [49]; excellent grading of criteria of Flynn et al. [13]
- MD mean difference, RR risk ratio, IV inverse variance, M-H Mantel-Haenszel, fixed fixed effect, random random effect, CI confidence interval
