What is Orbitozygomatic craniotomy?
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What is Orbitozygomatic craniotomy?
Orbitozygomatic craniotomy is essentially the expan- sion of the classic pterional approach. The superior and. lateral orbital rims are mobilized with additional removal. of part of the lateral wall along the zygoma and orbital.
What is Retrosigmoid craniotomy?
Retro-sigmoid craniotomy (often called “keyhole” craniotomy) is a minimally-invasive surgical procedure performed to remove brain tumors. This procedure allows for the removal of skull base tumors through a small incision behind the ear, providing access to the cerebellum and brainstem.
What is Supraorbital craniotomy?
Eyebrow craniotomy (supraorbital, SO) is a minimally invasive surgical procedure that is used for the removal of certain brain tumors located in or under the frontal lobes and around the area of the optic nerves and above the pituitary gland.
How do you perform a craniotomy?
What is a craniotomy?
- insert a shunt into the ventricle to drain cerebrospinal fluid (to treat hydrocephalus)
- insert a deep brain stimulator (DBS)
- insert an intracranial pressure (ICP) monitor.
- remove a sample of tissue cells (needle biopsy)
- drain a blood clot (hematoma aspiration)
- insert an endoscope to remove tumors.
What is the Orbitozygomatic approach?
The orbitozygomatic approach provides access to the anterior and middle cranial fossae as well as the deep sellar and basilar apex regions. Increased bone removal from the skull base obviates the need for vigorous brain retraction and offers an improved multiangled trajectory and shallower operative field.
What is Craniotome used for?
A cranial drill, also known as a craniotome, is a tool for drilling simple burr holes (trepanation) or for creating larger openings in the skull. This exposes the brain and allows operations like craniotomy and craniectomy to be done.
What is Pterional craniotomy?
The pterional craniotomy is a unique approach that provides wide access to the skull base. It is named after the pterion, the junction point of 4 bones within the skull (frontal, temporal, greater wing of sphenoid, parietal) and is considered a fundamental tool in the armamentarium of the neurosurgeon.
What is Infratentorial craniotomy?
A surgical procedure to remove a brain tumor located in either the infratentorial or posterior fossa regions of the brain.
What is Pterional approach?
Where is Pterional?
The pterion is an H-shaped bony neurological landmark found at the junction of the frontal, sphenoid, parietal and the squamous part of temporal bone (1). It is located approximately 4 cm superior to the zygomatic arch and 3.5 cm posterior to the frontozygomatic suture (2).
What is supratentorial vs infratentorial?
In anatomy, the supratentorial region of the brain is the area located above the tentorium cerebelli. The area of the brain below the tentorium cerebelli is the infratentorial region. The supratentorial region contains the cerebrum, while the infratentorial region contains the cerebellum.
What does infratentorial mean?
Medical Definition of infratentorial : occurring or made below the tentorium cerebelli an infratentorial tumor.
What is a Retromastoid craniotomy?
Similarly, the “extended” retromastoid approach is a modification of the standard retromastoid craniotomy, which includes partial removal of the bone over the sigmoid sinus. This “untethering” of the sigmoid sinus enables its gentle lateral mobilization using retraction sutures after dural opening.
