"Great article. There is still, however debate. A recent Lisa Lowe et al article noted that the cord which I have accepted to the top of L3 (L2-L3 disk space could be seen and be normal (their cases had no other findings suggestive of tethering...to…"
"Iatrogenic Lesion
Laceration of the dura mater and leptomeninges during lumbar puncture may lead to development of a cerebrospinal fluid leak. The ensuing circumferential epidural or subdural cerebrospinal fluid collection can compress the nerve…"
"Knowledge of the embryologic development and normal anatomy of the spinal cord and their variants is a prerequisite for diagnosis of congenital and acquired diseases of this structure. Starting on the 17th day of gestation, the neural plate thickens…"
"The caudal end of the spinal cord corresponds to the conus medullaris , which continues into the filum terminale. In healthy newborns, the tip of the conus medullaris is located between L1 and L2. The tip should not be positioned below L2-3 .…"
In teaching residents about spine ultrasound, I teach that the cord may be seen to the top of L3. People quote different things to me. The relevance may not be so great if one can disprove any tethering. However, when one cannot, how low can a normal cord go?See More
This community consists of professionals that perform sonography of the brain, cerebral circulation, the spine, and all peripheral nerves and muscles. Neursonology is applied to pathology at all life stages, from prenatal care to children and adults.