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 ...
A series of experiments were run to establish whether this basic model would display the cardinal movements which are observed during normal labour. Though the first three movements were observed without needing reverse engineered action, the subsequent cardinal movements required the use of waypoints ...