Stage 0

No Prolpase. Points Aa, Ba, Ap, Bp are all at −3 cm.

Stage I

The most distal portion of the prolapse is more than 1 cm above the level of hymen Quantification value is less than −1 cm.

Stage II

The most distal portion of the prolapse is 1 cm or less proximal or distal to the hymen Quantification value is ≥−1 cm but ≤+1 cm

Stage III

The most distal portion of the prolapse protrudes more than1 cm below the hymenal plane. Quantification value is >+1 but <+(tvl − 2 cm)

Stage IV

Complete eversion of vaginal walls. Quantification value > (+tvl − 2 cm)