Common procedures & surgeries
When you’re diagnosed with syringomyelia, the conversation about treatment often happens fast, and it can leave you with more questions than answers. What does this surgery actually do? Why is my doctor recommending monitoring instead of operating? What is a shunt, and when does it become necessary?
This guide was built to answer those questions. It walks through the most common procedures and surgeries associated with syringomyelia and related conditions like Chiari malformation, tethered cord, and CSF flow disorders, explaining what each one is, what it’s designed to do, and what patients should realistically expect.
Understanding your options is not optional. It is the foundation of informed care.
Options are still too limited.
That is exactly why more research is urgently needed.
Right now, care for syringomyelia often centers on monitoring, symptom management, and a relatively small set of surgical options aimed at improving cerebrospinal fluid (CSF) flow or reducing pressure on the spinal cord, rather than offering a simple, universal fix.
At the I AM HEARD Coalition, we believe patients deserve better answers, more innovation, and more research-driven treatment options. Until that happens, many people are left navigating a narrow treatment landscape that depends heavily on the underlying cause of the syrinx, the severity of symptoms, and access to experienced specialists.
This guide explains the most common procedures and surgeries that may come up after a syringomyelia diagnosis or with associated conditions such as Chiari malformation, tethered cord, spinal tumors, trauma, or CSF flow obstruction.
Important: this page is for general education only and does not replace medical advice. Treatment decisions should always be made with a qualified neurosurgeon or other appropriate specialist.
Nine procedures, five goals
Most of what a neurosurgeon may discuss falls into one of five goals. Use this map to jump to any procedure below.
Watch and follow up
Not every syrinx is treated right away. Some are tracked over time.
Make room for fluid flow
Surgery that creates space so CSF can move more normally.
Treat the cause
Removing or releasing whatever is driving the syrinx.
Drain or divert fluid
Shunts that move fluid away when upstream fixes aren’t enough.
What each one is designed to do
Each card covers what the procedure is, its purpose, and what patients should realistically expect. Reference links open trusted sources in a new tab.
Watch and follow up
Monitoring with MRI and neurological follow-up
Not every syrinx is treated immediately. If a person has few symptoms or no clear progression, clinicians may recommend monitoring with periodic MRI scans and neurological exams.
- Purpose
- To watch for syrinx enlargement, new neurological changes, or signs that more active treatment is needed.
- Why it matters
- Even after surgery, follow-up imaging is often needed because a syrinx can recur or continue to change over time. Establishing a baseline MRI and tracking changes across scans is an essential part of long-term management.
Make room for fluid flow
These steps are often discussed together. Which ones are included is a surgical judgment call that depends on your anatomy and your surgeon.
Posterior fossa decompression for Chiari malformation
This is the most common surgery when syringomyelia is caused by Chiari malformation. Surgeons remove a small section of bone at the back of the skull to create more room and improve cerebrospinal fluid flow.
- Purpose
- To reduce pressure on the brain and spinal cord and help restore more normal CSF movement, which may allow the syrinx to become smaller or stop progressing.
- Related procedures
- Depending on the case, decompression may also include duraplasty, laminectomy, or other steps to create more space. Outcomes vary significantly by surgeon experience and patient selection. Always seek a specialist with dedicated Chiari and syringomyelia expertise.
Duraplasty
Duraplasty is a surgical step often paired with posterior fossa decompression in which the dura, the tough outer membrane surrounding the brain and spinal cord, is opened and enlarged with a patch.
- Purpose
- To create more room around the brain and upper spinal cord and improve CSF flow.
- What patients may hear
- Some people will hear duraplasty discussed as part of Chiari decompression rather than as a stand-alone operation. Whether or not to include it is a surgical judgment call that varies by anatomy and surgeon preference, and it carries its own risk-benefit profile.
Laminectomy to improve CSF flow
In some cases, surgeons remove a small part of the bony structures around the spinal canal, called the laminae, to reduce crowding and improve flow around the spinal cord.
- Purpose
- To relieve pressure and restore space when anatomy is contributing to blockage or compression.
- Why it comes up
- Laminectomy may be part of treatment planning in Chiari-related cases or when spinal anatomy is limiting fluid movement. It is sometimes done at the same time as posterior fossa decompression or as a separate procedure targeting a different spinal level.
Treat the underlying cause
When something specific is driving the syrinx, addressing that cause directly can be the most effective approach.
Removing an obstruction
Sometimes a syrinx forms because something is physically blocking normal CSF flow, such as a tumor, scarring from a prior injury or infection, or a bone spur pressing on the cord.
- Purpose
- To remove the source of the blockage so pressure and fluid flow can normalize, ideally allowing the syrinx to stabilize or reduce in size.
- Why it matters
- If the obstruction is the primary driver of the syrinx, treating that cause directly can be the most effective approach. The type of surgery varies widely depending on the nature and location of the obstruction. Tumor removal, adhesiolysis, or bone work may each be involved.
Tethered cord release
If a tethered spinal cord is interfering with spinal cord movement or CSF dynamics, surgery may be done to release the tethering tissue, typically scar tissue or a tight filum terminale anchoring the cord too far down in the spinal canal.
- Purpose
- To reduce tension on the spinal cord and improve symptoms related to tethering, including pain, weakness, and bladder or bowel dysfunction.
- Why it may relate to syringomyelia
- In select cases, correcting a tethered cord can help address an underlying contributor to syrinx formation or progression. Not all patients with tethered cord require surgery. The decision is based on symptom severity and imaging findings.
Drain or divert fluid
Shunts move fluid from one space to another. They are typically considered when no upstream cause can be corrected.
Syrinx shunt placement
A shunt is a small tube used to drain fluid from within the syrinx cavity into another space, such as the subarachnoid space, pleural space, or peritoneal cavity, allowing pressure to decompress.
- Purpose
- To directly drain the syrinx when other approaches are not enough or when persistent syringomyelia remains symptomatic despite prior intervention.
- Important reality
- Many specialists consider syrinx shunts more of a later-line or last-resort option because they can clog, fail, or require revision surgery. Rates of shunt malfunction are significant, and outcomes vary. They are typically considered when no upstream cause can be corrected.
Hydrocephalus-related shunt procedures
If hydrocephalus is also present, a separate shunt may be placed to divert excess cerebrospinal fluid away from the brain’s ventricles, typically routing it to the peritoneal cavity (a ventriculoperitoneal shunt) or another drainage site.
- Purpose
- To reduce intracranial pressure caused by abnormal CSF buildup and improve overall fluid dynamics throughout the central nervous system.
- Why it may come up
- Some Chiari-related cases or complex CSF disorders involve hydrocephalus as part of the broader picture. Treating hydrocephalus directly can sometimes affect syrinx behavior as well, since both involve disordered CSF pressure and flow.
When surgery isn’t a one-time fix
Revision surgery
Some people need additional surgery after an earlier operation if symptoms continue, the syrinx returns or enlarges, scar tissue (arachnoiditis) develops, or a shunt malfunctions.
- Purpose
- To address persistent compression, restore CSF flow again, or correct a complication from prior treatment. Revision surgery can be more technically complex than the initial operation due to scar tissue and altered anatomy.
- Why patients should know about it
- Surgery for syringomyelia is often not a one-time fix. Long-term follow-up with periodic MRI and clinical evaluation is important for catching recurrence early. Understanding that revision surgery exists, and is relatively common, helps patients set realistic expectations and advocate for continued monitoring.
- A note for patients
- If you had decompression surgery and symptoms are returning or not improving, a repeat MRI compared to your prior imaging is an important next step. Always ask your neurosurgeon to review current imaging against your baseline.
No single procedure fits every case.
The cause matters. So does the surgeon.
- There is no single standard procedure that fits every syringomyelia case.
- The underlying cause matters a great deal, especially when Chiari malformation, trauma, tumors, tethered cord, or other CSF-flow problems are involved.
- The goal of surgery is often to restore fluid flow and prevent more spinal cord injury, not always to reverse every symptom that has already developed.
- Not every person with syringomyelia will need surgery. The risks, goals, and expected outcomes depend heavily on the underlying cause and individual anatomy.
- Because treatment options remain limited, this condition urgently needs more research, better diagnostics, and more innovation in patient-centered care.
At I AM HEARD Coalition, we are committed to pushing for better answers for this community. You deserve more than observation and a narrow set of options. Until more research arrives, arm yourself with knowledge, find specialists with real Chiari and syrinx experience, and never stop advocating for your own care.
Questions to ask your neurosurgeon
Write these down and bring them with you. Our appointment prep guide and medical glossary can help you follow the conversation.
- What do you believe is causing my syrinx, and does this procedure address that cause?
- What is the goal of this surgery: stopping progression, shrinking the syrinx, or relieving symptoms?
- Is monitoring with repeat MRI a reasonable option for me right now?
- How many of these procedures do you perform each year for Chiari or syringomyelia specifically?
- Will duraplasty or laminectomy be part of the operation, and why or why not?
- If a shunt is recommended, what upstream causes have been ruled out, and what happens if it fails?
- What does follow-up look like, and how will future scans be compared to my baseline MRI?
Bring this guide to your next appointment.
Download the handbook, find a provider with real Chiari and syrinx experience in our provider directory, and read more about what syringomyelia is and the conditions linked to it.
Disclaimer
The information on this page and in the downloadable guide is for general education only. It is not medical advice and is not a substitute for diagnosis or treatment from a qualified, licensed healthcare professional. I AM HEARD Coalition does not provide, perform, or recommend specific procedures. Every person’s situation is different, and treatment decisions should always be made with a qualified neurosurgeon or other appropriate specialist who can review your imaging and history.
If you have sudden or rapidly worsening symptoms, such as new weakness, loss of bladder or bowel control, or trouble breathing, seek emergency care right away.
Questions
Email us at info@iamheardcoalition.org. We can’t give medical advice, but we can help you find resources and providers.
Sources
- Mayo Clinic. Syringomyelia: Diagnosis and treatment. mayoclinic.org
- National Institute of Neurological Disorders and Stroke. Syringomyelia. ninds.nih.gov
- National Organization for Rare Disorders. Syringomyelia. rarediseases.org
- Cleveland Clinic. Chiari Malformation. my.clevelandclinic.org
- Cleveland Clinic. Tethered Spinal Cord Syndrome. my.clevelandclinic.org
- Augusta Health. Syringomyelia. augustahealth.com
- Syrinx shunting: a review of techniques and outcomes. 2020. pmc.ncbi.nlm.nih.gov/articles/PMC7188106
- Systematic review of syrinx shunt outcomes. 2021. pubmed.ncbi.nlm.nih.gov/34330095