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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Curr Orthop Pract. 2016 Nov-Dec;27(6):604–613. doi: 10.1097/BCO.0000000000000424

Table 3.

Descriptive summary of fracture pattern and reduction pattern

Stable CMN (N=84) SHS (N=97) P Test
AO class 1.1 20(23.8%) 23(23.7%) 0.003 Fisher
1.2 19(22.6%) 44(45.4%)
1.3 4(4.8%) 5(5.2%)
2.1 41(48.8%) 25(25.8%)
Reduction
quality
A 21(25.0%) 31(32.0%) 0.302 Chi square
E 63(75.0%) 66(68.0%)
Varus/Valgus None 77(91.7%) 91(93.8%) 0.671 Fisher
Val 5(6.0%) 3(3.1%)
Var 2(2.4%) 3(3.1%)
Total TAD Mean (SD) 17.3 (5.9) 26.2 (7.9) <0.001 Wilcoxon
Range (7.5, 40.5) (11.8, 52.0)
Median (IQR) 16.8 (13.1, 20.0) 23.9 (20.9, 30.5)
Unstable CMN (N=52) SHS (N=15) P Test
AO class 2.2 30(57.7%) 13(86.7%) 0.065 Fisher
2.3 22(42.3%) 2(13.3%)
Reduction
quality
A 29(55.8%) 11(73.3%) 0.317 Fisher
E 21(40.4%) 3(20.0%)
P 2(3.8%) 1(6.7%)
Varus/Valgus Non 43(82.7%) 10(66.7%) 0.043 Fisher
Val 1(1.9%) 3(20.0%)
Var 8(15.4%) 2(13.3%)
Total TAD Mean (SD) 19.0 (5.3) 24.0 (6.7) 0.004 Wilcoxon
Range (7.4, 32.6) (10.9, 35.0)
Median (IQR) 19.7 (16.0, 21.5) 25.8 (20.1, 28.0)

CMN, cephalomedullary nailing; IQR, interquartile range; SD, standard deviation; SHS, sliding hip screw