Cervical vertebrae vector illustration. Scheme with skull, C1... Vector illustration of cervical vertebrae. Medical scheme with close-up skull and isolated C1 atlas, C2 axis, C3, C4, C5, C6 and C7 ...

1 Introduction. Cervical insufficiency (CI) manifests as the flattening, thinning, dilation, and widening of the cervical canal before reaching full-term pregnancy, often resulting in miscarriage, ...