At a glance
A craniotomy is a neurosurgical operation in which a section of the skull is temporarily removed so that surgeons can access the brain directly. The removed piece of bone, called a bone flap, is set aside while the surgeon works, then fixed back in place at the end of the procedure using small plates and screws.
Inside the skull, the brain is enclosed in a tough protective membrane called the dura mater. The surgeon carefully opens this membrane to reach the brain tissue, a blood vessel, or a tumour underneath. Because the brain controls every function in the body, the surgical team monitors brain activity and vital signs throughout the entire operation.
Medical Condition
Craniotomy is used whenever a condition inside the skull requires direct surgical treatment and cannot be managed safely by less invasive means. The decision to operate depends on the exact location and size of the problem, the patient's overall health, and whether other treatments have already been tried.
- Brain tumours, whether primary (originating in the brain) or metastatic (spread from cancer elsewhere in the body)
- Brain aneurysm (a bulging, weakened spot on a blood vessel) that has ruptured or is at high risk of rupturing
- Arteriovenous malformation, or AVM (an abnormal tangle of blood vessels in the brain)
- Subdural or epidural haematoma (a dangerous collection of blood between the brain and skull after a head injury)
- Intracerebral haemorrhage (bleeding inside the brain tissue itself)
- Brain abscess (a pocket of infection inside the brain)
- Epilepsy (recurrent seizures) that does not respond to medication and has an identifiable source in the brain
- Hydrocephalus (excess fluid building up inside the brain) when a shunt or other device needs to be placed
- Skull base tumours pressing on cranial nerves or the brainstem
A craniotomy is not suitable for every patient or every brain condition. Your neurosurgeon will discuss alternatives and weigh the risks against the expected benefit before recommending surgery.
- Patients whose medical condition makes general anaesthesia (being put fully to sleep) too dangerous
- Very small, deep lesions that can be reached more safely through minimally invasive, stereotactic (computer-guided) techniques
- Tumours or metastases that respond well to radiosurgery (focused radiation) without open surgery
- Patients who decline surgery after being fully informed of all options
Risks & Complications
Craniotomy is a major operation on the most sensitive organ in the body, and it carries real risks that your surgical team will explain in detail before you consent.
- Swelling of the brain (cerebral oedema) in the days after surgery, which can temporarily worsen symptoms
- Bleeding inside the skull after the operation, sometimes requiring a second surgery
- Infection of the wound, bone flap, or brain coverings (meningitis)
- Seizures (convulsions) that may begin or worsen after surgery
- Stroke or damage to nearby brain tissue, leading to weakness, numbness, or speech problems
- Memory difficulties or changes in thinking, personality, or mood
- Vision or hearing changes if the operation is near those areas of the brain
- Deep vein thrombosis, or DVT (blood clots in the leg veins) from prolonged bed rest
- Cerebrospinal fluid (CSF) leak, where the fluid surrounding the brain escapes through the wound
- Reaction to general anaesthesia, including breathing problems or cardiovascular complications
- In rare cases, the bone flap does not heal back properly and may need to be replaced with a synthetic implant
Preparation & Procedure
Preparation for a craniotomy begins days or even weeks before the operation date and involves both lifestyle adjustments and medical testing. Your team will give you written instructions tailored to your specific case.
Regarding eating and drinking, you will usually be asked to stop eating solid food at least six hours before surgery and to stop drinking clear fluids about two hours before. Blood thinners, anti-inflammatory painkillers, and certain herbal supplements are generally paused several days beforehand because they increase bleeding risk. Your doctor will tell you which of your regular medications to continue and which to stop. Smoking weakens wound healing and increases anaesthetic risk, so stopping it as early as possible before surgery is advised by most surgical teams. Alcohol is also best avoided in the week before the operation.
The tests run before a craniotomy usually include imaging and blood work. Your team needs a detailed map of your brain before making a single incision.
- MRI (magnetic resonance imaging) of the brain, often with a contrast dye injected into a vein to highlight abnormal tissue
- CT (computed tomography) scan to assess bone structure and bleeding
- Cerebral angiography (an X-ray of the brain's blood vessels) if an aneurysm or AVM is involved
- Blood tests including full blood count, clotting ability, kidney function, and blood group for cross-matching
- Electrocardiogram (EKG, a recording of the heart's electrical activity) and chest X-ray
- Neuropsychological assessment (tests of memory and thinking) to give a baseline before surgery
- Anaesthesia review with the anaesthetist who will keep you asleep during the operation
On the day of surgery, the sequence of events typically follows these steps.
- You arrive at the hospital and are admitted to a preparation ward.
- Nursing staff insert an intravenous (IV) line into your arm for fluids and medication.
- Your head hair is shaved only in the specific area of the incision, not the whole scalp in most cases.
- You are moved to the operating theatre, positioned carefully, and your head is secured in a rigid frame or headrest to prevent any movement during surgery.
- The anaesthetist puts you to sleep with general anaesthesia. In certain cases where monitoring of brain function matters, an awake craniotomy is performed, meaning you are kept conscious and able to speak while the surgeon works near language or movement areas of the brain.
- The surgeon makes a skin incision, folds back the scalp, and uses a surgical drill and saw to cut out the bone flap.
- The dura mater is opened, and the surgeon addresses the target: removing a tumour, clipping an aneurysm, draining blood, or another goal specific to your condition.
- The dura is stitched closed, the bone flap is secured back with small titanium plates and screws, and the scalp is sutured.
- You are taken to the intensive care unit (ICU) or a neurosurgical recovery area for close monitoring as the anaesthetic wears off.
Aftercare
Recovery from a craniotomy happens in stages, starting in the ICU and gradually moving toward independent daily life. How long each stage takes depends on what was done during the operation, how the brain responds, and your overall health before surgery.
- ICU monitoring: You will usually spend at least the first one to two days in an ICU or high-dependency unit where nurses check your level of consciousness, pupil responses, blood pressure, and neurological function very frequently.
- Ward stay: Once stable, you move to a neurosurgical ward. The total hospital stay varies widely, from a few days to several weeks, depending on your condition and recovery speed.
- Wound care: The scalp incision is closed with sutures or staples that are typically removed within one to two weeks. Keep the area dry and follow specific cleaning instructions from your nurse.
- Medications: You may be prescribed anti-seizure medication, corticosteroids (to reduce brain swelling), antibiotics to prevent infection, and pain relief. Take all prescribed medications as directed by your doctor.
- Activity restrictions: Heavy lifting, bending sharply at the waist, and strenuous exercise are usually avoided for several weeks. Driving is restricted until your surgeon and, in many countries, a licensing authority confirm it is safe.
- Cognitive and physical rehabilitation: If the operation affected movement, speech, memory, or swallowing, you will be referred to physiotherapy, speech therapy, or occupational therapy. These sessions can begin in hospital and continue after discharge.
- Follow-up imaging: An MRI or CT scan is usually arranged within days of surgery to confirm the result, and further scans may be scheduled at intervals of weeks or months.
- Outpatient follow-up: Your neurosurgeon will see you in clinic at set intervals to review your recovery, check the wound, and discuss further treatment such as radiotherapy or chemotherapy if a tumour was removed.
- Emotional health: Fatigue, mood swings, and difficulty concentrating are common in the weeks after brain surgery. Psychological support is available in most neurosurgical centres and can make a real difference.
- Return to work or school: This varies enormously. Some patients return to light duties within weeks; others need months of recovery. Your team will give you a realistic timeline based on your specific surgery.
Cost & What Determines It
Craniotomy is among the most complex and resource-intensive operations in medicine, and its price reflects that. The same procedure can cost vastly different amounts depending on the country, the hospital, the exact diagnosis, and what unfolds during and after surgery.
- Diagnosis and complexity: A craniotomy to drain a straightforward blood clot is technically simpler than one to remove a tumour near critical brain structures. Longer, more complex surgeries require more theatre time and more specialist staff.
- Hospital class and country: A university hospital or dedicated neurosurgical centre in a high-income country charges differently from an equivalent facility in Southeast Asia or Eastern Europe. Accreditation level and available technology also affect the price.
- Anaesthesia type and duration: General anaesthesia for a long craniotomy involves continuous drug infusions and monitoring by a dedicated anaesthetist, all billed separately in many hospitals.
- Length of stay: ICU care is billed by the day and is expensive. A complication-free recovery may mean a few days in ICU followed by a week on the ward; a difficult recovery can mean weeks.
- Implants and devices: Titanium plates, screws, and sometimes a dural substitute (a patch to replace the brain covering) add material costs. Neurostimulators or shunt systems, if placed during the same operation, increase the total substantially.
- Intraoperative monitoring equipment: Awake craniotomy, neuronavigation (GPS-like guidance for the surgeon), intraoperative MRI, or neurophysiology monitoring each add to the bill.
- Post-surgical imaging: MRI scans after surgery to confirm the result are often billed outside the main surgical fee.
- Rehabilitation: Physiotherapy, speech therapy, and occupational therapy sessions are usually charged separately and the total depends on how many sessions are needed.
- Medications: Anti-seizure drugs, corticosteroids, and pain management during and after hospital admission add to the overall cost.
Most hospitals offering craniotomy to international patients can provide an all-inclusive surgical package that covers the surgeon fee, anaesthesia, operating theatre, ICU stay up to a set number of days, and standard ward accommodation. What tends to be billed separately are extended ICU stays, additional imaging, rehabilitation sessions, complications requiring re-operation, and accommodation or transport for a companion.
Indonesian patients travelling abroad for a craniotomy should be aware that BPJS Kesehatan does not cover treatment received outside Indonesia, and most standard Indonesian health insurance policies exclude overseas care as well. Patients generally pay out of pocket or through a private international health insurance plan that explicitly covers overseas surgical treatment. Before travelling, request a detailed written cost estimate from the hospital that lists every item separately. This estimate will not cover every possible complication, but it gives you a realistic starting point and helps you avoid unexpected bills after surgery.
Frequently Asked Questions
How long does a craniotomy take?
A craniotomy usually takes between 3 and 8 hours, depending on why it is being done and what the surgeon finds once inside. Removing a tumor, stopping a bleed, or repairing an aneurysm (a bulge in a blood vessel) each take different amounts of time. Your surgical team will give you a more specific estimate once they have reviewed your scans and planned the operation.
What type of anaesthesia is used and will I feel pain during or after a craniotomy?
Most craniotomies are done under general anaesthesia, meaning you are fully asleep and feel nothing during the procedure. Afterwards, most patients have a headache and some discomfort around the incision site, which doctors manage with pain relief medication. The level of pain varies from person to person, but the nursing team monitors you closely and adjusts your comfort care as needed.
How long is the recovery after a craniotomy and when can I go back to work?
Most people spend at least one week in hospital after a craniotomy, and full recovery at home typically takes 6 to 12 weeks, sometimes longer. Returning to office work or light activity is usually possible after 6 to 8 weeks, while physically demanding jobs or driving may require a longer break. Your neurosurgeon will set a personal timeline based on how your brain heals and the results of any follow-up scans.
How much does a craniotomy cost?
The cost of a craniotomy varies considerably based on the complexity of the procedure, how many nights you spend in hospital, whether a specialised implant or device is used to replace the bone flap (the section of skull that is removed and then replaced), and the class of hospital you choose. Because these factors combine differently for every patient, the only reliable way to get a real number is to request a written estimate from the hospital based on your specific case.
This page is general information, not a substitute for medical advice. Every case is different. Your doctor decides what is right for you.
