From: Reoperation rate and implants’ position variation features of displaced femoral neck fractures with sliding compression or length-stable fixation in young and middle-aged population
sliding compression screws
(n = 82)
length-stable screws(n = 80)
P value
screw withdrawal distance(mm)
3.75 ± 3.49
2.77 ± 2.34
0.036
rotation angle (°)
1.47 ± 1.46
2.02 ± 1.92
0.042