congenital knee dislocation
![](https://pacs.de/sites/default/files/pictures/thumbs/upload.wikimedia.org/4/7/6/8/6/KnieLX_R%25C3%25B6_thumb.jpg)
X-Ray image,
Neonate with congenital hyperextended knee plus Zellweger-Syndrome
![](https://pacs.de/sites/default/files/pictures/thumbs/upload.wikimedia.org/4/7/6/8/7/KnieLX_US_thumb.jpg)
Sonogramm of
same neonate in similar orientation, P = patella, F = femoral, T = tibial epiphysis
![](/sites/all/modules/pacs/tools/imgs/Iris_color_40.png)
Arthrogryposis
multiplex congenita