mechanism of labour

(redirected from cardinal movements)

mechanism of labour

An obstetrical term of art referring to the seven sequential movements that a foetus undergoes as it passes through birth canal:
• Engagement;
• Descent; 
• Flexion;
• Internal rotation;
• Extension; 
• Restitution and external rotation; and
• Expulsion.
References in periodicals archive ?
The cardinal movements of internal rotation, flexion, and descent are required to allow the baby to negotiate this area of the pelvis.
The second part includes animation of the stages and phases of labor, timing contractions, Cardinal Movements, and effacement and dilatation.