What is pterional approach?
What is pterional approach?
The pterional approach (PA) is a versatile anterolateral neurosurgical technique that enables access to reach different structures contained in the cranial fossae. It is essential for neurosurgical practice to dominate and be familiarized with its multilayer anatomy.
What is the approach for craniotomy?
Frontal craniotomy (unilateral or bilateral): Unilateral approach uses an incision starting less than 1 cm anterior to the tragus and just above the zygomatic arch, travels superiorly, and ends at the midline frontally; bilateral approach uses an ear-to-ear incision (also known as a bicoronal incision) that is also …
What is the 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 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.
Where is Pterional?
The pterion is a craniometric point near the sphenoid fontanelle of the skull. It is a point of convergence of the sutures between the frontal, sphenoid, parietal, and squamous temporal bones [1]. There are varied patterns of articulation of these bones and sometimes a small epipteric bone may be present.
What is the position of choice for supratentorial craniotomy?
HOB , positioning, activity, bathing: The HOB after supratentorial craniotomy should be at least at 30 degrees. Avoidance of prolonged pressure directly on the incision will prevent breakdown or added discomfort.
How do you use a Craniotome?
Methods
- Cut out a small bone piece of the outer table of about 5-mm size using a rongeur.
- Place the small bone piece in the center of the incomplete burr hole.
- Push on the small bone piece with a craniotome after unlocking the safety stop mechanism.
- Restart and complete the burr hole with the craniotome.
How do you code craniotomy?
Craniectomy or Craniotomy Procedures CPT® Code range 61304- 61576.
What is under the pterion?
The pterion is known as the weakest part of the skull. The anterior division of the middle meningeal artery runs underneath the pterion.
What is the significance of the pterion?
The pterion which marks the union of 4 bones of the cranium is located superior to the zygomatic arch and posterior to the frontozygomatic suture. It is an important neurosurgical landmark for the lateral/pterional approach and has racial differences in both its location and pattern of union of the bones.
How do you perform a pterional craniotomy?
The pterional craniotomy can be performed using various craniometric points, including the pterion (the intersection of the frontal, temporal, parietal, and sphenoid bones) and squamous suture. To view the video in virtual reality mode, Google Cardboard and YouTube mobile app are necessary.
What is frontfrontotemporal craniotomy used for?
Frontotemporal craniotomy, also known as “pterional craniotomy” (PC), provides an optimal microscopic exposure and a wide open working space for manipulation of intracranial structures, and it has been widely used in the field of neurosurgery for treatment of lesions in the anterior and posterior circulations 1) .
What is the pterional approach in surgery?
Pterional approach (neurosurgery) The pterional or fronto-temporo-sphenoidal approach is one of the most frequently performed neurocranial craniotomy / craniectomy approaches and allows access to numerous important supratentorial anatomical substrates of vascular and neoplastic pathology.
What is minipterional craniotomy in neurosurgery?
The minipterional (MPT) craniotomy offers similar microsurgical corridors, with a substantially shorter incision, less muscle dissection, and a smaller craniotomy flap. Although pterional craniotomy and its variants are the most used approaches in neurosurgery, few studies have evaluated their precise indications.
