When is a? Hymenectomy needed?

Rarely. Correctly it is a hymenotomy. It is required when the hymen is imperforate or fused.

Related Questions

When is a hymenectomy needed?

If abnormal. If hymen is imperforate it will allow mebnses to flow instead of backing up and causing intense abdominal pain with each cycle. In the event of hypertrophy it can prevent bleeding from laceration of the labial artery during intercourse. Read more...
Rarely. Correctly it is a hymenotomy. It is required when the hymen is imperforate or fused. Read more...