Inferior to the conus medullaris, the spinal nerves form a bundle called the cauda equina.
What structure is located inferior to the conus medullaris of the spinal cord?
At the bottom of the spinal cord (conus medullaris) is the cauda equina, a collection of nerves that derives its name from the Latin translation of “horse’s tail” (early anatomists thought the collection of nerves resembled a horse’s tail).
What is inferior to the conus medullaris?
Inferior to the level of the conus medullaris the vertebral canal (Figs. 7-7 and 7-8) contains the cauda equina. The cauda equina is bathed in the cerebrospinal fluid of the subarachnoid space. The subarachnoid space in the lumbar vertebral canal is large compared with that in the cervical and thoracic regions.
What is the inferior part of the spinal cord?
At its inferior end, the spinal cord tapers to a point known as the conus medullaris and gives rise to many large nerve fibers known as the cauda equina. The cauda equina descends through the vertebral canal from the conus medullaris to the coccyx.
What spinal level is conus medullaris?
The conus medullaris is the terminal end of the spinal cord, which typically occurs at the L1 vertebral level in the average adult.
What is the treatment for conus medullaris?
Depending on its cause, spinal decompression surgery, radiation, and antibiotics can be used to treat the symptoms. In addition, physical therapy is also necessary to regain function.
What is the function of conus medullaris?
Structure and Function
This structure serves to stabilize the spinal cord by connecting the conus to the coccyx via the coccygeal ligament. The lumbosacral nerve roots continue inferiorly to this as the cauda equina.
What does the conus medullaris contain?
The conus medullaris is the bundled, tapered end of the spinal cord nerves. Situated near the first two lumbar vertebrae, the conus medullaris ends at the cauda equina, a bundle of spinal nerves and nerve roots.
Where does the conus medullaris end in adults?
The conus medullaris most commonly terminates at the L1/2 intervertebral disc level in children and adults 1–3. Extending from the conus is a delicate strand of fibrous tissue called the filum terminale that acts to give longitudinal support to the cord.
What part of the spine controls the heart?
Thoracic (mid back) – the main function of the thoracic spine is to hold the rib cage and protect the heart and lungs. The twelve thoracic vertebrae are numbered T1 to T12.
Where should the conus medullaris terminates?
Conclusions: The CM terminates most commonly at the L1-2 disc space and in the absence of tethering, the CM virtually never ends below the mid-body of L2. A CM that appears more caudal on neuroimages should be considered tethered.
Is conus terminates at L2 normal?
A conus level of termination at L2-L3 or above is normal at any age. A conus level of termination at L3-L4 or below is abnormal (with possible exceptions occurring in premature infants and full-term newborns).