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Updated: Jun 17, 2026

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms

Published on: August 11, 2015

Outcome following surgery for ophthalmic segment aneurysms.

Bhawani S Sharma¹, Manish K Kasliwal, Ashish Suri

¹Department of Neurosurgery, 7th Floor, Neurosciences Centre, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110 029, India. drsharmabs@yahoo.com

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia

|December 17, 2009

Summary

Surgical clipping of ophthalmic segment aneurysms, though complex, offers good outcomes. This microsurgical approach achieved an 83% good outcome rate with acceptable complications for these challenging intracranial aneurysms.

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Last Updated: Jun 17, 2026

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms

Published on: August 11, 2015

Area of Science:

Neurosurgery
Vascular Neurology
Medical Imaging

Background:

Ophthalmic segment aneurysms constitute approximately 5% of all intracranial aneurysms.
The paraclinoid region's complex anatomy presents significant surgical challenges for these aneurysms.

Purpose of the Study:

To evaluate the clinical features, complications, and outcomes of surgically treated ophthalmic segment aneurysms.
To assess the efficacy and safety of microsurgical clipping for these specific aneurysms.

Main Methods:

Retrospective analysis of clinical records for patients treated between January 2001 and September 2008.
Inclusion of 78 patients with ophthalmic segment aneurysms, with 56 undergoing microsurgery, primarily direct clipping.

Main Results:

A good outcome (Glasgow Outcome Scale [GOS] 4-5) was achieved in 83% of patients.
The overall complication rate was 21%, with a mortality rate of 3.5%.
Giant and multiple aneurysms were noted in 8% and 24% of cases, respectively.

Conclusions:

Direct microsurgical clipping is the preferred treatment for ophthalmic segment aneurysms when feasible.
Microsurgery provides an acceptable complication profile and high success rate for these vascular lesions.
Advancements in surgical instrumentation and endovascular techniques may further improve outcomes and reduce morbidity.