Nyhus classification
Surgery and anaesthesia
Also known as: Nyhus-Klassifikation · Nyhus sınıflaması · Nyhus classification of groin hernias
What it is for
The Nyhus classification describes groin hernias by the state of the internal (deep) inguinal ring and of the posterior wall of the inguinal canal, and separates femoral and recurrent hernias. Types:
Classification
| Category | Description |
|---|---|
| Type I | indirect hernia with a normal-sized internal ring (typically infants and children). |
| Type II | indirect hernia with an enlarged internal ring; posterior wall intact. |
| Type IIIA | direct hernia (posterior wall defect), regardless of size. |
| Type IIIB | indirect hernia large enough to weaken or encroach on the posterior wall (e.g. large scrotal, sliding or pantaloon hernias). |
| Type IIIC | femoral hernia. |
| Type IV | recurrent hernia, subdivided A–D by site (direct, indirect, femoral, combined); the letter order differs between sources. |
Source
- Edition
- Nyhus 1993 (types I–IV)
- Checked on
Summary of the published classification in our own words. Not a substitute for the original publication.
A question about this classification?
Medelix answers clinical questions from guidelines and studies – every statement with its source.