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- Joe Iwanaga, Juan Sardi, Vlad Voin, Jens R Chapman, Rod J Oskouian, and R Shane Tubbs.
- Seattle Science Foundation, Seattle, Washington, USA; Department of Anatomy, Kurume University School of Medicine, Kurume, Fukuoka, Japan; Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Fukuoka, Japan. Electronic address: joei@seattlesciencefoundation.org.
- World Neurosurg. 2017 Nov 1; 107: 1001-1006.
ObjectiveThe alar ligaments are among the primary ligamentous structures contributing to craniovertebral stability. The purpose of this study is to clarify the morphology of the alar ligament using fresh cadaveric specimens.MethodsTwenty-two fresh, frozen cadaveric alar ligaments were used in this study. The occiput, C1, and C2 were removed en bloc from each specimen, and various measurements and observations including variations were documented.ResultsThe angle formed by both alar ligaments was measured in a neutral position (149 ± 24.19 degrees), as well as during forced flexion (134.18 ± 27.08 degrees) and extension (163.81 ± 24.54 degrees).ConclusionsThe current cadaveric evaluation offers an interesting window into better understanding the anatomy of the alar ligaments.Copyright © 2017 Elsevier Inc. All rights reserved.
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