What is a 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 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 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.
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.
Do they shave your head for acoustic neuroma surgery?
The hair near the incision area will be shaved and the scalp prepped with an antiseptic. The audiologist will attach electrodes to your face and ear to monitor the facial nerve, hearing, and brainstem functions during surgery.
What is frontal temporal zygomatic craniotomy?
The bilateral fronto-orbito-zygomatic craniotomy described in this report is a combination of an extended frontal approach and fronto-orbito-zygomatic craniotomy. This gives a wide exposure of the spheno-ethmoido-clival regions of both the cavernous sinuses and both the infratemporal regions.
How do you get a pterional craniotomy?
- Patient preparation.
- Skin incision.
- Scalp dissection.
- Temporalis muscle incision.
- Retraction of scalp/temporalis flaps.
- Drilling of keyhole burrhole.
- Craniotomy and bone flap removal.
- Drilling of sphenoid wing.
Is the 3-piece orbitozygomatic approach in neurosurgery effective?
CONCLUSION: The modifications described herein show the technical features of the 3-piece orbitozygomatic approach, which provides excellent brain exposure with less retraction and a good cosmetic result. The pterional approach (frontotemporosphenoidal approach) 1-4 is one of the most common approaches in neurosurgery.
What is orbitozygomatic craniotomy (Oz)?
The orbitozygomatic craniotomy (OZ) involves an expansion of the pterional approach through osteotomy of various sections of the superior/lateral orbital rim/roof and zygoma.
How many variants of the orbitozygomatic procedure are there?
The orbitozygomatic approach presents 2 main variants, namely, the 1- and the 2-piece procedures.
What are orbitozygomatic approaches to osteotomy?
Currently, orbitozygomatic approaches comprise a group of surgical approaches to the skull base that suggest involvement of elements of the orbital wall s (superior and lateral) and zygomatic bone into the bone block formed during osteotomy.