Table 1 Mean time to entrypoint (EP) in seconds (SD; range), mean radiation time in seconds (SD; range), median number of swings of C-arm (range), and median number of missing attempts for distal locking (DL) (range). P value < 0.05 considered significant

Antegrade Femur

 Time EP

46 (35; 15–121)

62 (39; 26–154)

0.16

 Radiation EP

11 (6; 7–23)

14 (7; 4–25)

0.34

 Swings EP

na

2 (1–6)

 Time DL

59 (42; 22–144)

47 (16; 27–73)

0.35

 Radiation DL

18 (12; 7–44)

15 (5; 8–23)

0.49

 Swings DL

na

lateral position

 Missing hole DL

0 (0–2)

0 (0–1)

Retrograde Femur

 Time EP

26(15; 8–54)

35 (13; 18–67)

0.01

 Radiation EP

8 (5; 2–16)

10 (5; 5–23)

0.30

 Swings EP

na

2 (2–3)

Antegrade Tibia

 Time EP

23 (13; 10–52)

49 (24; 24–91)

0.001

 Radiation EP

8 (3; 4–13)

14 (6; 7–29)

0.007

 Swings EP

na

2 (2–6)

 Time DL

89 (58; 23–183)

78 (62; 29–230)

0.61

 Radiation DL

26 (15; 7–55)

24 (16; 9–56)

0.76

 Swings DL

na

lateral position

 Missing hole DL

1 (0–2)

0 (0–2)