The microsurgical anatomy of the gyrus rectus area and its neurosurgical implications

Ramos, Alejandro; Chaddad-Neto, Feres; Joaquim, Andrei Fernandes; Campos-Filho, José Maria; Mattos, João Paulo; Ribas, Guilherme Carvalhal; Oliveira, Evandro de

doi:10.1590/s0004-282x2009000100021

Cited by 14 publications

(13 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, a case of unilateral GR cystic changes presented with Tourette syndrome [10] . However, a series of patients operated for an anterior communicating artery aneurysm, with possible iatrogenic lesions of the GR, showed very few, if any, behavioral disturbances [1,2] .…”

Section: Discussionmentioning

confidence: 97%

“…The gyrus rectus (GR) is part of Brodmann's area (BA) 11, which together with BA 10 and BA 47 form the orbito-frontal cortex. Lesions of this region are classically associated with disinhibition syndromes even if some reports described very few or no behavioral symptoms after such lesions [1][2][3] . Here we report the case of a 59-year-old woman who suffered a subarachnoid hemorrhage associated with a restricted lesion of her left GR, with an unusual frontal syndrome presentation.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Restricted Left Gyrus Rectus Hemorrhage with Unusual Frontal Syndrome Presentation

Winckler¹,

Magezi²,

Croquelois³

2011

Eur Neurol

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 97%

mentioning

confidence: 99%

Restricted Left Gyrus Rectus Hemorrhage with Unusual Frontal Syndrome Presentation

Winckler¹,

Magezi²,

Croquelois³

2011

Eur Neurol

View full text Add to dashboard Cite

“…It has been reported that surgeries in this region, e.g., in cases of ruptured anterior communicating artery (ACoA) aneurysms, can lead to post-operative deficits including impairment in memory, language function, executive function, and change in personality 16). Although considerable importance is attributed to the initial insult caused to the brain by the aneurysm rupture itself and/or consequent vasospasm, other factors, iatrogenic in particular, are expected to affect cognitive outcomes in these patients.…”

Section: Introductionmentioning

confidence: 99%

Relationship between Gyrus Rectus Resection and Cognitive Impairment after Surgery for Ruptured Anterior Communicating Artery Aneurysms

Joo

Park

Moon

et al. 2016

J Cerebrovasc Endovasc Neurosurg

View full text Add to dashboard Cite

ObjectiveThe gyrus rectus (GR) is known as a non-functional gyrus; hence, its resection is agreed to be a safe procedure frequently practiced to achieve a better surgical view during specific surgeries. This study aimed at comparing the cognitive outcomes following GR resection in patients who underwent surgery for ruptured anterior communicating artery (ACoA) aneurysms.Materials and MethodsFrom 2012 to 2015, 39 patients underwent surgical clipping for ruptured ACoA aneurysms. Mini-mental state examinations (MMSE) were performed in 2 different periods. The statistical relationship between GR resection and MMSE results was evaluated, and further analysis of MMSE subgroup was performed.ResultsTwenty-five out of the 39 patients (64.19%) underwent GR resection. Mean initial and final MMSE scores in the GR resection group were 16.3 ± 9.8 and 20.8 ± 7.3, respectively. In the non-resection group, the mean initial and final MMSE scores were 17.1 ± 8.6 and 21.9 ± 4.5, respectively. Neither group's scores showed a significant change. Subgroup analysis of initial MMSE showed a significant difference in memory recall and language (p = 0.02) but not in the final MMSE scores.ConclusionThere was no significant relationship between the GR resection and cognitive outcomes in terms of total MMSE scores after surgery for ruptured ACoA aneurysm. However, subgroup analysis revealed a temporary negative effect of GR resection in the categories of language and memory recall. This study suggests that GR resection should be executed superficially, owing to its close anatomical relationship with the limbic system.

show abstract

“…The infraorbital artery (IfO) normally originates from the A2 segment, the callosomarginal artery or as a common trunk with the frontopolar artery (36, 63,68). In rare cases the IfO can originate from the A1 segment or from the internal frontal arteries.…”

Section: Infraorbital Arterymentioning

confidence: 99%

“…The azygos ACA (Figure 2A-D) is formed by the fusion of the two A2 segments and runs into the medial surface of the hemispheres and usually divides below the genu to supply both hemispheres (4, 6, 9-11, 17,21,25,28,32,34,36,39,42,44,49,54,57,59,60,62,63,65,69,78). The azygos ACA can also be formed when the embryonic median artery persists (60).…”

Section: Azygos Anterior Cerebral Arterymentioning

confidence: 99%

Review of the anatomy of the distal anterior cerebral artery and its anomalies

Cilliers

Page²

2015

Turkish Neurosurgery

View full text Add to dashboard Cite

SegmentationVarious authors have used different terms to describe the segments of the ACA (36,64,68). It can be divided into proximal and distal segments, or pre-and postcommunicating segments. The pericallosal artery is distal to the A1 segment and consists of several segments that can be divided according to its relationship with the corpus callosum. The A2 segment (also referred to as the infracallosal section) runs vertically █ INTRODUCTION T he cerebral cortex is primarily supplied by the anterior, middle and posterior cerebral arteries. The anatomy of the anterior cerebral artery (ACA) varies considerably and this complicates the description of the ACA and its branches. The segmentation of the ACA is mostly described similarly by different authors, although the relationship of the pericallosal (PrcA) and callosomarginal arteries (CmA) is not agreed upon (78).The anterior cerebral artery (ACA) varies considerably and this complicates the description of the normal anatomy. The segmentation of the ACA is mostly agreed on by different authors, although the relationship of the pericallosal and callosomarginal arteries (CmA) is not agreed upon. The two basic configurations of the ACA are determined by the presence or absence of the CmA.The diameter, length and origin of the cortical branches have been measured and described by various authors and display great variability. Common anomalies of the ACA include the azygos, bihemispheric, and median anterior cerebral arteries.A pilot study was done on 19 hemispheres to assess the variation of the branches of the ACA. The most common variations included absence and duplication. The inferior internal parietal artery and the CmA were most commonly absent and the paracentral lobule artery was the most frequently duplicated (36.8%). The inferior internal parietal artery originated from the posterior cerebral artery in 40.0% and this was the most unusual origin observed.It is important to be aware of the possibility of variations since these variations can have serious clinical implications. The knowledge of these variations can be helpful to clinicians and neurosurgeons. The aim of this article is to review the anatomy and variations of the anterior cerebral artery, as described in the literature. This was also compared to the results from a pilot study.

show abstract

The microsurgical anatomy of the gyrus rectus area and its neurosurgical implications

Cited by 14 publications

References 6 publications

Restricted Left Gyrus Rectus Hemorrhage with Unusual Frontal Syndrome Presentation

Restricted Left Gyrus Rectus Hemorrhage with Unusual Frontal Syndrome Presentation

Relationship between Gyrus Rectus Resection and Cognitive Impairment after Surgery for Ruptured Anterior Communicating Artery Aneurysms

Review of the anatomy of the distal anterior cerebral artery and its anomalies

Contact Info

Product

Resources

About