Where is the cervicomedullary junction?

Last Update: May 30, 2022

This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!

Asked by: Shawn Herman PhD
Score: 4.8/5 (30 votes)

Cervicomedullary junction (CMJ), as the name implies is the region where the brainstem continues as the spinal cord. A lesion located in this region affects either the brainstem or cervical cord or both depending on its extent and pathology.

Where is the craniocervical junction?

The craniocervical junction consists of the bone that forms the base of the skull (occipital bone) and the first two bones in the spine (which are in the neck): the atlas and axis.

What is Cervicomedullary region?

CERVICOMEDULLARY tumors (CMTs) are rare intra- medullary. neoplasms centered at the junction of the cervical spine and brainstem. The majority of these tumors are histologically benign, slow-growing gliomas that typically present with a long duration of symptoms.

What is the Craniovertebral Junction?

The craniovertebral junction (CVJ) comprises the occiput, atlas, and axis and is visible in most magnetic resonance (MR) imaging studies of the brain. ... Most atlas anomalies produce no abnormal CVJ relationships and are not associated with basilar invagination.

What is Cervicomedullary kinking?

A cervicomedullary kink is present (arrowhead), and a peglike appearance of the tonsils is noted. The lower border of the pons lies at the level of the foramen magnum (arrow), indicating that the medulla lies beneath the foramen magnum. This case meets the criteria for a Chiari 1.5 malformation.

cervicomedullary junction (Prof Dr Selçuk Yılmazlar)

35 related questions found

What is the difference between Chiari malformation type 1 and type 2?

There are two main kinds of Chiari malformations. Type 1 Chiari malformation symptoms and signs can show up in infants, children, teens or adults. Type 2 Chiari malformation is associated with spina bifida and is present at birth. Surgery can address symptoms such as headache, hydrocephalus, sleep apnea and others.

Does Chiari malformation shorten lifespan?

Life expectancy for Chiari malformation depends on the type. Patients with Chiari type I malformation, the mildest form of the condition, are typically diagnosed in adulthood and have a normal life expectancy and good outcomes with treatment and/or surgery.

Can neck problems affect your eyes?

Muscle tension in the upper back, neck and shoulders can lead to headaches or problems with your vision, as the flow of blood is restricted to your eyes. Signs you may notice are: Throbbing pain around the temples. Blurred vision or difficulty focusing.

Can neck problems affect your brain?

In our office, almost all the people who have upper cervical spine instability, who come in for our non-surgical treatments, have an amazing amount of brain fog, the inability to concentrate, anxiety, and depression. These are not the typical things that doctors look for in the neck.


What does craniocervical junction mean?

The craniocervical junction (CCJ) is comprised of the inferior surface of the skull, the atlas and axis, as well as muscles and connective tissues that attach the skull to the cervical spine. The CCJ encloses the central nervous system (CNS), encephalic vasculature and the cerebrospinal fluid (CSF) system.

What is an oblongata?

Medulla oblongata, also called medulla, the lowest part of the brain and the lowest portion of the brainstem. ... The medulla oblongata plays a critical role in transmitting signals between the spinal cord and the higher parts of the brain and in controlling autonomic activities, such as heartbeat and respiration.

What is the significance of the Conus Medullaris?

The conus medullaris give rise to the lumbar sympathetic, sacral somatic and sacral parasympathetic nerves which continue downward within the cauda equina. These nerves have important functions which can be impaired by injury or ischemia.

What is in the brain stem?

The brainstem is the structure that connects the cerebrum of the brain to the spinal cord and cerebellum. It is composed of 3 sections in descending order: the midbrain, pons, and medulla oblongata. ... Some of the white matter tract cell bodies are located within the brainstem as well.


Can tight neck muscles affect blood flow to brain?

Even a small misalignment can be the start of serious problems. When contracted muscles knot up in your neck, they reduce blood and oxygen circulation to your brain. Your brain uses almost one fourth of your body's blood supply at any given time, so when the blood vessels to your head are constricted, you feel it.

How do I know if I have craniocervical instability?

Symptoms of craniocervical instability include occipital headache, neck pain and neurological abnormalities such as numbness, motor weakness, dizziness, and gait instability. Patients sometimes describe the feeling that their head is too heavy for their neck to support (“bobble-head”).

Can cervical spondylosis cause dementia?

Cervical stenosis can cause CSF flow alterations which can result in increased intracranial pressure and buildup of waste products. Resulting symptoms are headaches and other neurological defects. It can also contribute to Alzheimer's Disease and other dementias.

Can your neck being out of alignment cause dizziness?

Poor neck posture, neck disorders, or trauma to the cervical spine cause this condition. Cervical vertigo often results from a head injury that disrupts head and neck alignment, or whiplash. This dizziness most often occurs after moving your neck, and can also affect your sense of balance and concentration.


What does a neurologist do for neck pain?

Every back pain and neck pain patient is unique, with different degrees of problems associated with a bone or disc abnormality. A neurologist is trained to discover the causes of symptoms, as well as using EMG testing to assess the injury to nerves and whether it is reversible in the short and long term.

What nerves are affected by C1 and C2?

C1, C2, and C3 (the first three cervical nerves) help control the head and neck, including movements forward, backward, and to the sides. The C2 dermatome handles sensation for the upper part of the head, and the C3 dermatome covers the side of the face and back of the head. (C1 does not have a dermatome.)

Does the vagus nerve affect the eyes?

Along its travels, it affects eye movement, facial expressions, tone of voice, heart rate and heart rate variability, breathing, and the function of the spleen, liver, kidneys and intestines. It can help to reduce inflammation and to improve your immune response.

Can a pinched nerve in neck affect eyes?

A pinched or damaged nerve in your spine may lead to blurred vision or headaches, loss of hearing, slurred speech, and bowel and bladder problems, to name a few.


What are the symptoms of a pinched nerve in the neck?

Symptoms of pinched nerve in the neck include:
  • A sharp pain in the arm.
  • Pain in the shoulder.
  • A feeling of numbness or pins and needles in the arm.
  • Weakness of the arm.
  • Worsening pain when you move your neck or turn your head.

Does Chiari get worse with age?

However, rarely mild Chiari malformations may result from low spinal fluid pressure. (Payner, 1994). It seems reasonable to us that Chiari's may worsen gradually over life, and that a CSF leak might create a Chiari type of MRI picture as the brain droops down.

Is Chiari progressive?

In some people, Chiari malformation can become a progressive disorder and lead to serious complications. In others, there may be no associated symptoms, and no intervention is necessary. The complications associated with this condition include: Hydrocephalus.

Is Chiari a disability?

If you have Arnold-Chiari Malformation that has resulted in severe symptoms that have made you unable to work, you may be eligible to receive Social Security disability benefits. A chiari malformation (CM) is a defect in the brain structure.