Orthobullets - Illustration demonstrates the Tonnis angle. The normal Tonnis angle should measure <13 degrees, with angles greater than 13 degrees suggestive of dysplasia. | Facebook
![The Tönnis classification is divided into four grades (I to IV) based... | Download Scientific Diagram The Tönnis classification is divided into four grades (I to IV) based... | Download Scientific Diagram](https://www.researchgate.net/publication/343000496/figure/fig1/AS:914810749329409@1595119287641/The-Toennis-classification-is-divided-into-four-grades-I-to-IV-based-on-the-position-of.png)
The Tönnis classification is divided into four grades (I to IV) based... | Download Scientific Diagram
![Superiority of the modified Tönnis angle over the Tönnis angle in the radiographic diagnosis of acetabular dysplasia Superiority of the modified Tönnis angle over the Tönnis angle in the radiographic diagnosis of acetabular dysplasia](https://www.spandidos-publications.com/article_images/etm/8/6/ETM-08-06-1934-g00.jpg)