What is Aneurysm Clipping?
Aneurysm clipping is a microsurgical procedure used to treat a brain aneurysm (a bulge in a blood vessel wall). The goal is to isolate the aneurysm from the normal blood circulation without blocking the main vessel itself.
This is performed through a craniotomy, where a neurosurgeon opens a small window in the skull to access the brain. Using a high-powered microscope, the surgeon navigates the natural folds of the brain to reach the affected vessel and applies a permanent medical clip.
Clipping is performed in two scenarios: Emergency (after an aneurysm has already ruptured/bled) or Elective/Prophylactic (to prevent a discovered "unruptured" aneurysm from bleeding in the future).
Why Choose Clipping?
While newer endovascular (minimally invasive) techniques exist, clipping remains the "Gold Standard" for several reasons:
Clipping has the lowest rate of aneurysm "regrowth" or recurrence compared to coiling or stents.
Wide-necked aneurysms or those involving complex branching vessels are often better suited for surgery.
Modern clips are made of high-quality titanium and do not interfere with future MRI scans.
Surgery allows the surgeon to physically reduce the pressure a large aneurysm might be placing on nearby nerves.
The Surgical Process
A typical clipping surgery takes between 3 to 5 hours. Here is what happens:
- 1
General Anesthesia - You are fully asleep and monitored by a specialized neuro-anesthesiologist.
- 2
Craniotomy - A small portion of the scalp is shaved, an incision is made, and a piece of bone is removed to create a window to the brain.
- 3
Dissection - Using a microscope, the surgeon gently separates the brain tissue along its natural pathways to find the aneurysm.
- 4
Clipping - A tiny titanium clip is placed across the neck of the aneurysm. Blood flow is checked using a special dye (ICG) to ensure the parent vessel is still open.
- 5
Closure - The bone flap is secured back in place with small plates, and the skin is sutured.
Clipping vs. Coiling: Key Differences
| Feature | Surgical Clipping | Endovascular Coiling |
|---|---|---|
| Invasiveness | Requires opening the skull (Craniotomy). | Minimally invasive via the groin/wrist artery. |
| Recovery Time | 4–6 weeks at home; 3–5 days in hospital. | 1–2 weeks at home; 1–2 days in hospital. |
| Durability | Extremely high; rarely needs follow-up surgery. | Higher risk of "compaction" or regrowth over time. |
| Blood Thinners | Usually not required long-term. | Often requires aspirin/Plavix for several months. |
The decision depends on the aneurysm's size, location, shape, and whether it has ruptured, as well as your overall age and health. Your neurosurgeon will discuss which option provides the safest long-term outcome.
Potential Risks
As with any brain surgery, clipping carries specific risks that vary based on the aneurysm's location:
A small risk that blood flow to a healthy part of the brain could be compromised during clipping.
Brain edema or "vasospasm" (narrowing of vessels), particularly in patients who had a rupture before surgery.
A leak of cerebrospinal fluid through the surgical site, which may require additional care.
Risk of infection at the incision site or in the protective layers of the brain (meningitis).
The Recovery Path
You will likely spend the first night in the ICU for hourly neurological checks. Once stable, you move to a regular room. Pain from the incision is managed with medication. Most patients are walking by the second day.
Fatigue is very common. You may experience headaches or "popping" sounds in the ear as fluid and air behind the bone flap resolve. Stitches or staples are removed at 10–14 days.
A follow-up scan (CTA or MRA) is usually done at 6 months or 1 year to confirm the aneurysm is completely closed. Most patients return to full activity, including exercise, after 6–8 weeks.
Common Questions
Will I set off airport metal detectors?
No. The titanium clips are too small and are not ferromagnetic, so they won't trigger security alarms.
Can I have an MRI after surgery?
Yes. Titanium clips are MRI-compatible. However, always inform your imaging technician that you have a brain clip.
When can I go back to work?
For non-physical office work, usually 4 to 6 weeks. For jobs requiring heavy lifting or intense physical labor, it may take 8 to 12 weeks.
Will my hair grow back?
Yes. Only a small strip along the incision is usually shaved, and the hair will begin to grow back over the scar within a few weeks.
Visual Guide: Aneurysm Treatment
Watch a 3D animation of how a clip is applied to the neck of an aneurysm to prevent rupture.
Watch Video →
