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What Is Craniotomy and Why Is It Performed?

A craniotomy is a brain surgery in which a small part of the skull is temporarily removed to allow surgeons to access the brain. It is done to treat serious conditions such as brain tumors, bleeding, infections, or traumatic brain injuries. Although it may sound scary, craniotomy is a well-established and often life-saving procedure.

Advances in medical technology have made craniotomy safer and recovery easier than before. In many cases, it is the most effective way to remove harmful tissue, stop bleeding, or reduce pressure on the brain to prevent long-term damage.

Who May Need a Craniotomy?

A craniotomy might be recommended if you have:

● Brain Tumours: To remove or biopsy suspicious growths.

● Traumatic Brain Injury (TBI): To relieve pressure from bleeding or swelling.

● Brain Aneurysms or Vascular Malformations: To repair or secure weak blood vessels.

● Infections or Abscesses: When medication alone isn’t enough to clear the problem.

● Epilepsy: In some severe cases, to remove the part of the brain causing seizures.

● Stroke Complications or Haematomas: To reduce harmful pressure in the skull.

Your doctor will only suggest a craniotomy after carefully reviewing symptoms, imaging (like MRI or CT scans), and other tests. Because it’s a major surgery, it’s usually recommended only when other treatments aren’t enough.

Types of Craniotomy

Craniotomies are customised depending on the problem and where it’s located in the brain. Some common types include:

● Standard Craniotomy: A portion of the skull is removed and replaced after surgery.

● Minimally Invasive Craniotomy: Uses smaller openings with the help of endoscopes and tiny tools.

● Awake Craniotomy: The patient stays awake during part of the surgery so the surgeon can avoid critical brain areas, especially near speech or movement centres.

● Emergency Craniotomy: Done urgently for trauma, bleeding, or swelling that threatens life.

The specific approach depends on the disease, its location, and your overall health. Neurosurgeons choose the safest way based on scans and clinical findings.

Craniotomy Procedure

Preparation for a craniotomy starts days or even weeks before the operation once your doctor decides it’s needed. Tests like blood work, MRI, CT scan, and heart checks are done to make sure you’re safe for surgery. You may be told not to eat or drink after midnight before the scheduled day.

Here’s how a typical craniotomy procedure unfolds:

1. Anesthesia: You will be given general anesthesia, so you are asleep and pain-free during the whole surgery.

2. P ositioning: The neurosurgeon positions your head and body carefully for the best access.

3. Opening the Skull: A part of your skull is removed gently using precise tools. This bone piece is called a bone flap.

4. Surgical Work: Once the brain is visible, the surgeon works on the target, removing a tumour, relieving pressure, sealing a bleed, or draining an abscess.

5. Closing the Skull: Before finishing, the bone flap is put back in place and secured with tiny plates or screws.

6. Closure: The scalp is stitched up and dressed.

Depending on your condition, the surgery may take several hours. Throughout the operation, your vital signs are monitored closely by anaesthesiologists and the surgical team.

Recovery & Aftercare

After surgery, you’ll be moved to a recovery room or intensive care unit so doctors can watch you closely. The first 24–48 hours are important because the brain needs time to settle and swelling needs to be monitored.

Craniotomy recovery may involve:

● Pain Management: You might feel headaches or soreness near the incision. Pain medicines help keep you comfortable.

● Physical Activity: Early movement like sitting up and walking is encouraged as soon as it’s safe.

● Wound Care: Keep the incision clean and follow instructions on dressing changes.

● Rest and Sleep: Plenty of rest helps the brain and body heal.

● Follow-Up Scans: CT or MRI scans may be repeated to check the surgical area and ensure everything is stable.

Recovery time varies widely; some people may go home in a few days, while others may need weeks to fully recover. It depends on what was done during surgery, your age, and your overall health. Work closely with your care team to know when you can return to work or normal activities.

Risks & Possible Complications

Craniotomy is major surgery, and like any operation, it comes with risks. These can include:

● Infection: Around the incision or inside the skull (usually preventable with antibiotics).

● Bleeding: Minor bleeding is expected; significant bleeding is rare but possible.

● Swelling: Brain swelling can occur after surgery and may need treatment.

● Neurological Changes: Weakness, memory issues, or speech changes may happen depending on the brain area operated on.

● Seizures: Some people may experience seizures after surgery.

● CSF Leak: Cerebrospinal fluid can leak where the skull was opened (treated if needed).

Surgeons take great care to minimize these risks, and most people recover without major issues. Your neurosurgeon will explain all possible risks specific to your diagnosis and answer your questions before surgery.