A craniotomy is a surgical procedure in which a neurosurgeon temporarily removes a section of the skull to access the brain for diagnosis or treatment. Craniotomy surgery is commonly used to treat brain tumors, aneurysms, traumatic brain injuries, vascular malformations, infections, epilepsy, and other neurological conditions affecting the brain and surrounding structures.
What Is a Craniotomy?
A craniotomy is one of the most commonly performed brain surgery procedures. During surgery, a carefully planned opening is created in the skull to allow the neurosurgeon access to the brain. After the procedure is completed, the section of bone is typically replaced and secured.
Craniotomies may be performed as emergency procedures or planned surgeries depending on the condition being treated.
At Midwest Spine & Brain Institute, advanced craniotomy procedures are performed using modern microsurgical techniques, image-guided navigation, and minimally invasive approaches whenever appropriate to improve surgical precision and protect neurological function.
Patients across Minnesota and Wisconsin receive personalized neurosurgical care from experienced brain and spine specialists.
Why Is a Craniotomy Performed?
A craniotomy may be recommended to diagnose, remove, repair, or relieve pressure caused by conditions affecting the brain.
Common reasons for craniotomy surgery include:
- Brain tumor removal
- Brain aneurysm repair
- Arteriovenous malformation (AVM) surgery
- Skull base surgery
- Traumatic brain injury treatment
- Intracranial hemorrhage
- Epilepsy surgery
- Brain infection treatment
- Hydrocephalus management
- Blood clot removal
- Relief of pressure inside the skull
- Biopsy of abnormal brain tissue
Related conditions & treatments:
- Brain tumor surgery
- Neurovascular surgery
- Skull base surgery
- Epilepsy surgery
- Hydrocephalus treatment
- Complex brain surgery
Symptoms That May Require Craniotomy Surgery
Symptoms depend on the underlying brain condition being treated.
Common symptoms may include:
- Persistent headaches
- Seizures
- Vision changes
- Weakness or numbness
- Difficulty speaking
- Loss of balance or coordination
- Memory problems
- Confusion
- Nausea or vomiting
- Facial weakness
- Hearing loss
- Sudden neurological symptoms
Emergency craniotomy surgery may be necessary after severe head trauma or brain bleeding.
Conditions Commonly Treated With Craniotomy
Craniotomy surgery may be used to treat:
Brain Tumors
Both benign and malignant brain tumors may require surgical removal or biopsy.
Brain Aneurysms
Aneurysm clipping may help prevent bleeding or rupture.
Vascular Malformations
AVMs and cavernous malformations may require microsurgical treatment.
Traumatic Brain Injuries
Emergency craniotomy may relieve dangerous pressure caused by swelling or bleeding.
Epilepsy Disorders
Surgery may help reduce seizures caused by abnormal brain activity.
Brain Infections
Certain infections or abscesses may require surgical drainage.
Hydrocephalus
Craniotomy may assist with procedures that relieve excess fluid buildup around the brain.
How Is a Craniotomy Performed?
The exact surgical approach depends on the location and complexity of the condition being treated.
General Steps of Craniotomy Surgery
- The patient receives general anesthesia.
- The scalp is carefully prepared and opened.
- A section of the skull bone is temporarily removed.
- The neurosurgeon accesses the brain using microsurgical techniques.
- The underlying condition is treated or removed.
- The skull bone is replaced and secured.
- The incision is closed carefully.
Advanced technologies such as neuronavigation, intraoperative imaging, and brain mapping may help improve surgical accuracy and preserve healthy brain tissue.
Types of Craniotomy Procedures
Different craniotomy techniques may be used depending on the condition and surgical goals.
| Type of Craniotomy | Purpose |
| Traditional Craniotomy | Provides broad access to the brain |
| Minimally Invasive Craniotomy | Uses smaller openings to reduce tissue disruption |
| Awake Craniotomy | Allows brain function monitoring during surgery |
| Skull Base Craniotomy | Accesses deep structures at the base of the skull |
| Emergency Craniotomy | Relieves pressure or bleeding after trauma or stroke |
Benefits of Craniotomy Surgery
Potential benefits may include:
- Removal of brain tumors or lesions
- Relief of pressure on the brain
- Prevention of aneurysm rupture
- Reduced seizure activity
- Improved neurological function
- Diagnosis of brain abnormalities
- Treatment of life-threatening brain conditions
- Improved quality of life
Early treatment may help prevent permanent neurological damage.
Risks and Complications of Craniotomy
As with any brain surgery, craniotomy carries risks.
Potential complications may include:
- Bleeding
- Infection
- Stroke
- Seizures
- Swelling of the brain
- Neurological deficits
- Cerebrospinal fluid leak
- Blood clots
- Memory or speech problems
- Anesthesia complications
Your neurosurgeon will discuss the risks and expected outcomes based on your individual condition.
Recovery After Craniotomy Surgery
Recovery time varies depending on the type of surgery performed and the condition being treated.
Recovery may involve:
- Intensive neurological monitoring
- Hospital observation
- Pain management
- Physical therapy
- Occupational therapy
- Speech therapy
- Follow-up imaging
- Activity restrictions during healing
Some patients recover within several weeks, while others may require longer rehabilitation.
Can Craniotomy Be Minimally Invasive?
Yes. In selected cases, minimally invasive craniotomy techniques may allow surgeons to access the brain through smaller openings while reducing disruption to surrounding tissue.
Benefits of minimally invasive approaches may include:
- Smaller incisions
- Reduced postoperative discomfort
- Shorter hospital stays
- Faster recovery
- Less tissue disruption
Not all brain conditions can be treated using minimally invasive techniques.
When to See a Neurosurgeon
You should seek neurological evaluation if you experience:
- Persistent severe headaches
- Seizures
- Sudden weakness or numbness
- Vision or speech changes
- Balance problems
- Memory changes
- Known brain tumors or aneurysms
- Symptoms after head trauma
Emergency medical care is critical for sudden neurological decline or suspected brain hemorrhage.
Why Choose Midwest Spine & Brain Institute for Craniotomy Surgery?
Midwest Spine & Brain Institute provides advanced craniotomy and brain surgery care using modern neurosurgical technology and patient-centered treatment planning.
Patients benefit from:
- Board-certified neurosurgeons
- Advanced brain imaging and navigation
- Microsurgical expertise
- Minimally invasive surgical options
- Multidisciplinary neurological care
- Personalized treatment plans
- Comprehensive rehabilitation support
Experienced specialists include:
- Eric S. Nussbaum — internationally recognized for cerebrovascular and skull base surgery
- Eduardo J. Perez — Dr. Perez is an expertly trained and experienced neurosurgeon who specializes in minimally invasive surgical techniques for brain and spine conditions, including cranial procedures for brain trauma and tumors.
- Meysam A. Kebriaei — dual board-certified neurosurgeon specializing in complex brain and spinal procedures
- Hart P. Garner — board-certified neurosurgeon focused on advanced minimally invasive neurosurgical techniques
Frequently Asked Questions
What is a craniotomy?
A craniotomy is a surgical procedure in which part of the skull is temporarily removed to allow access to the brain.
Why would someone need a craniotomy?
Craniotomy surgery may be needed to treat brain tumors, aneurysms, AVMs, trauma, seizures, infections, or brain bleeding.
Is a craniotomy considered major surgery?
Yes. A craniotomy is a major neurosurgical procedure that requires specialized surgical expertise and careful monitoring.
How long does craniotomy surgery take?
Surgery length depends on the complexity of the condition and may range from several hours to longer procedures.
What is an awake craniotomy?
An awake craniotomy allows surgeons to monitor speech, movement, or brain function during surgery to help protect critical areas of the brain.
How long is recovery after a craniotomy?
Recovery varies depending on the condition treated and the patient’s overall health. Some patients recover within weeks, while others require longer rehabilitation.
Is craniotomy surgery painful?
Patients are under anesthesia during surgery. Some discomfort or headache may occur during recovery but is managed with medication and postoperative care.
Can craniotomy surgery remove brain tumors?
Yes. Craniotomy is commonly used to remove or biopsy brain tumors.
What are the risks of craniotomy surgery?
Potential risks include bleeding, infection, seizures, stroke, neurological deficits, and anesthesia complications.
Can craniotomy be minimally invasive?
Yes. Some brain conditions may be treated using minimally invasive craniotomy techniques with smaller openings and less tissue disruption.
Conclusion
Craniotomy surgery is a highly specialized brain surgery procedure used to diagnose and treat complex neurological conditions affecting the brain and surrounding structures. Advances in microsurgical techniques, imaging technology, and minimally invasive approaches continue to improve surgical precision, safety, and patient outcomes.
If you or a loved one has been diagnosed with a brain condition requiring surgery, the specialists at Midwest Spine & Brain Institute provide advanced neurosurgical care across Minnesota and Wisconsin.
Schedule a consultation to learn more about personalized craniotomy treatment options.