From: Cervical collagen and biomechanical strength in non-pregnant women with a history of cervical insufficiency
Control
n = 42
CI
n = 15
Less than ± 45°
36.8 ± 9.6
32.6 ± 7.0
Between 46° and 90° or -46° to -90°
22.4 ± 9.7
19.0 ± 10.7
Fibers not oriented parallel with the sectioning plane
(shorter than 27 μm)
40.6 ± 11.6
48.5 ± 13.2*