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Asterion as a surgical landmark for lateral cranial base approaches.
J Craniomaxillofac Surg. 2006 Oct; 34(7):415-20.JC

Abstract

INTRODUCTION

When approaching the posterior fossa and posterolateral cranial base, surface landmarks are helpful in locating the junction of the transverse and the sigmoid sinus.

MATERIAL AND METHODS

On 100 skull halves a 2mm drill bit was externally placed over the asterion and was drilled through the bone perpendicular to the skull surface. Various positions of the asterion and its distance from the root of the zygomatic process of the temporal bone, from the suprameatal crest and the mastoid tip were investigated.

RESULTS

The position of the asterion has been found to be located superficial to the transverse-sigmoid sinus junction in 87% of all samples, inferior to the transverse-sigmoid sinus junction in 11% and superior to the transverse-sigmoid sinus junction in 2%. The distance from the asterion to the root of the zygoma has been determined to be 54.6+/-5.5mm. The distance between asterion and Henle's spine was 45.2+/-5.2, and from asterion to Frankfurt Horizontal Plane 15+/-7.5mm.

CONCLUSION

Asterion varies regarding its cephalocaudal position. The findings of this study might have direct consequences for transmastoid and retrosigmoid approaches for microvascular trigeminal root decompression and combined petrosal approaches.

Authors+Show Affiliations

Department of Anatomy, Faculty of Medicine, Ege University, Izmir, Turkey.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16963269

Citation

Ucerler, Hulya, and Figen Govsa. "Asterion as a Surgical Landmark for Lateral Cranial Base Approaches." Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery, vol. 34, no. 7, 2006, pp. 415-20.
Ucerler H, Govsa F. Asterion as a surgical landmark for lateral cranial base approaches. J Craniomaxillofac Surg. 2006;34(7):415-20.
Ucerler, H., & Govsa, F. (2006). Asterion as a surgical landmark for lateral cranial base approaches. Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery, 34(7), 415-20.
Ucerler H, Govsa F. Asterion as a Surgical Landmark for Lateral Cranial Base Approaches. J Craniomaxillofac Surg. 2006;34(7):415-20. PubMed PMID: 16963269.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Asterion as a surgical landmark for lateral cranial base approaches. AU - Ucerler,Hulya, AU - Govsa,Figen, Y1 - 2006/09/11/ PY - 2005/05/02/received PY - 2006/05/17/accepted PY - 2006/9/12/pubmed PY - 2007/1/31/medline PY - 2006/9/12/entrez SP - 415 EP - 20 JF - Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery JO - J Craniomaxillofac Surg VL - 34 IS - 7 N2 - INTRODUCTION: When approaching the posterior fossa and posterolateral cranial base, surface landmarks are helpful in locating the junction of the transverse and the sigmoid sinus. MATERIAL AND METHODS: On 100 skull halves a 2mm drill bit was externally placed over the asterion and was drilled through the bone perpendicular to the skull surface. Various positions of the asterion and its distance from the root of the zygomatic process of the temporal bone, from the suprameatal crest and the mastoid tip were investigated. RESULTS: The position of the asterion has been found to be located superficial to the transverse-sigmoid sinus junction in 87% of all samples, inferior to the transverse-sigmoid sinus junction in 11% and superior to the transverse-sigmoid sinus junction in 2%. The distance from the asterion to the root of the zygoma has been determined to be 54.6+/-5.5mm. The distance between asterion and Henle's spine was 45.2+/-5.2, and from asterion to Frankfurt Horizontal Plane 15+/-7.5mm. CONCLUSION: Asterion varies regarding its cephalocaudal position. The findings of this study might have direct consequences for transmastoid and retrosigmoid approaches for microvascular trigeminal root decompression and combined petrosal approaches. SN - 1010-5182 UR - https://www.unboundmedicine.com/medline/citation/16963269/Asterion_as_a_surgical_landmark_for_lateral_cranial_base_approaches_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1010-5182(06)00082-5 DB - PRIME DP - Unbound Medicine ER -