Table 1 Classification of IUA by the American Fertility Society, 1988

Extent of cavity involved

<1/3

<1/3–2/3

>2/3

1

2

4

Type of adhesions

Filmy

Filmy and dense

Dense

1

2

4

Menstrual pattern

Normal

Hypomenorrhoea

Amenorrhoea

0

2

4

Prognostic classification

HSG score^a

Hysteroscopy score

 Stage I (mild)

1–4

–^b

–^b

 Stage II (Moderate)

5–8

–^b

–^b

 Stage III (severe)

9–12

–^b

–^b