[The tethered cord syndrome].

The "tethered cord syndrome" as a complication of spinal dysraphism is probably more important than assumed earlier. An abnormally low position of the conus medullaris is caused by different anomalies: e.g.

[Sonographic position and functional diagnosis of ventricular positioned shunt systems in infants with hydrocephalus].

By cranial sonography through the open fontanelles of infants with hydrocephalus a diagnosis of position and function of ventricular shunts is possible. A malposition of the ventricular catheter was diagnosed sonographically in 11 of 55 patients after primary shunting. Complications after shunting as overdrainage or shunt insufficiency could be demonstrated early and reliable.