Surgical anatomy of the anterior clinoid process

Huynh-Le, Phuong; Natori, Yoshihiro; Sasaki, Tatsuya

doi:10.1016/j.jocn.2003.08.005

Cited by 58 publications

(43 citation statements)

References 29 publications

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“…In the present study the average basal width, length and thickness of the ACP were found to be 7.3 mm, 9.7 mm, and 5.4 mm, respectively. Similar observations were reported by Gupta et al, Hunnargi et al, Huynh-Le et al, Lee et al, and in Nepal, Indian, Japan and Korean skulls, respectively (15,16,20,28). The comparison of the findings revealed that the mean length of ACP is the longest in the Indian population.…”

Section: Dural Fold Vascular and Neural Anatomical Findingssupporting

confidence: 88%

Regional microsurgical anatomy and variations of the anterior clinoid process

Dağtekin

Avcı²,

Uzmansel³

et al. 2014

Turkish Neurosurgery

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The aim of this study was to better define the microsurgical anatomy of the supra/parasellar region and describe variations of the anterior clinoid process (ACP). MATERIAL and METHODS:Fifteen formalin-fixed cadaver heads and 25 dry skulls were used to define the microsurgical anatomy of the ACP and related structures. The presence of the caroticoclinoid foramen (CaCF) as well as other relevant measurements were all noted. Radiological examination of the CaCF was also demonstrated on dry skulls. RESULTS:Interosseous bridges, which form between the anterior and middle clinoid processes or connect all three (anterior, middle and posterior) clinoid processes, were found in 30% of the specimens. The average basal width, length and thickness of the ACP were 7.3 mm, 9.7 mm and 5.4 mm, respectively. Length of the optic nerve (ON) up to the falciform ligament (FL) was 10.9 mm; length of the ON under the FL was 2.7 mm; length of ON after removal of the ACP and unroofing the optic canal was 21.1 mm. CONCLUSION:This study contributes to the relationship of important vascular, neural, bone and dural layers of this region and also demonstrates the variations of ACP by means of microsurgical dissections and radiological examinations. BULGULAR: İnterosseöz köprü, anterior ve orta klinoid proçes birleşmesiyle veya diğer 3 klinoid proçesin (anterior, orta, arka klinoid proçes) birleşmesiyle oluşur ve bu varyasyon %30 oranında tespit edilmiştir. Anterior klinoid proçesin bazal genişliği, uzunluğu ve kalınlığı sırası ile 7,3 mm, 9,7 mm ve 5,4 mm olarak bulunmuştur. Optik sinirin falsiform ligamana olan uzaklığı 10,9 mm, falsiform ligaman altındaki uzaklığı 2,7 mm, optik sinirin anterior klinoid proçes alındıktan ve optik kanal açıldıktan sonraki uzunluğu 21,1 mm olarak bulunmuştur. SONUÇ:Çalışmada anterior klinoid proçes varyasyonları ve bu bölge ile ilgili önemli vasküler, nöral ve kemik yapıların ilişkisi mikrocerrahi ve radyolojik çalışma ile yeniden değerlendirilmiştir.

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Section: Dural Fold Vascular and Neural Anatomical Findingssupporting

confidence: 88%

Regional microsurgical anatomy and variations of the anterior clinoid process

Dağtekin

Avcı²,

Uzmansel³

et al. 2014

Turkish Neurosurgery

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“…Several cadaveric studies describe the length, width, and occasionally the thickness of the ACP [8,13,15]. Each of the diameters varied amongst the investigated populations and races.…”

Section: Pneumatisation Of Acpmentioning

confidence: 99%

“…The process projects posteriorly and medially in the middle cranial fossa and constitutes a boundary of the caroticoclinoid foramen if the ACP is merged with the top of the medial clinoid process [10]. The ACP is closely related to many vital neurovascular structures, including the internal carotid artery (ICA) adjacent to the medial and posterior aspect of the ACP [8,22]. The relationship between these structures can be pathologically affected by growing with expansion and lateral projection of an ophthalmic artery aneurysm or paraclinoid ICA aneurysm [18].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the decompression of the optic canal as well as enhancement of neurosurgical exposures to many surrounding structures in the approach is additionally facilitated by the removal the ACP [7,14]. Regardless of the multiple techniques in preforming an anterior clinoidectomy [6,8,25], cerebrospinal fluid (CSF) rhinorrhoea is a common complication in up to 40% of patients undergoing this procedure [22]. This is due to the fact that the process is pneumatised by the sphenoid, ethmoid, or both sinal origins [14].…”

Section: Introductionmentioning

confidence: 99%

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The pneumatisation of anterior clinoid process is not associated with any predictors that might be recognised preoperatively

Szmuda

Słoniewski²,

Baczalska³

et al. 2013

Folia Morphol

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“…The importance of the sphenoid bone has been emphasized in many anatomical and neurosurgical studies owing to its central position at the skull base and its significant neurovascular contents (14,23,28,32,33,37). This particular bone has been the subject of much consideration with respect to the new proposals of basic (11,12,17,21,22,41) and alternative surgical techniques (6,9,16,25,42).…”

Section: Introductionmentioning

confidence: 99%

Does the sphenoid angle effect the operation strategy?anatomical and radiological investigation

Kahiloğulları¹,

Uz²,

Eroğlu³

et al. 2012

Turkish Neurosurgery

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AIm:The aim of our study is to suggest the sphenoid wing-lesser wing angulation (SWA) importance during surgeries directed to this region. mATeRIAL and meTHods: SWA on 40 skulls were measured bilaterally (n=80). The depth of the middle cranial fossa (DMCF) at the level of the SWA was determined. The same measurements were done on 40 randomly selected computerized tomography (CT) scans bilaterally (n=80). ResuLTs:The specimens were classified into 3 groups according the degree of SWA; Group-A, SWA was more than 130° (27%), Group-B, SWA was 110-130° (43%) and Group-C, SWA was less than 110° (28%). MCF was measured (mean) as 10.1 mm in Group-A, 6.4 mm in Group-B and 4.6 mm in Group-C. MCF was increasing with the increase in SWA. CT scans were classified into same procedure. Group-A was 26%, Group-B was 42% and Group-C was 31% fitting in the relevant groups. The superior orbital fissure (SOF) was evaluated according to the Sharma's classification. CoNCLusIoN:We suggest that by the preoperative evaluation of CT scans measurements the SWA, it is possible to estimate the MCF and the type of SOF. This knowledge may be important for all surgeries requiring removal of the sphenoid wing and these region pathologies.

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Surgical anatomy of the anterior clinoid process

Cited by 58 publications

References 29 publications

Regional microsurgical anatomy and variations of the anterior clinoid process

Regional microsurgical anatomy and variations of the anterior clinoid process

The pneumatisation of anterior clinoid process is not associated with any predictors that might be recognised preoperatively

Does the sphenoid angle effect the operation strategy?anatomical and radiological investigation

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