alar ligaments


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a·lar lig·a·ments

[TA]
one of a pair of short stout bands that extends from the side of the dens of the axis to the tubercle on the medial aspect of the occipital condyle; Synonym(s): check ligaments of odontoid
Synonym(s): ligamenta alaria [TA]

a·lar lig·a·ments

(ālăr ligă-mĕnts) [TA]
One of a pair of short stout bands that extend from the side of the dens of the axis to the tubercle on the medial aspect of the occipital condyle.
Synonym(s): check ligaments of odontoid, ligamenta alaria [TA] .
References in periodicals archive ?
If patients, whose transverse and alar ligaments are eroded, incline their cervical spine, the AADI broadens excessively (5.47 mm on average).
Table 1: Diameter of AADI and PADI measured in mm at neutral position, flexion, and extension: measurements were carried out in intact specimens and after the transverse and the alar ligaments were damaged.
[9] Also, the horizontally oriented facet joints and capsules between the atlas and axis can be affected by accentuated axial rotation, which can injure the alar ligaments.
Scheithauer, "Lesions of the alar ligaments in vivo and in vitro studies with magnetic resonance imaging," Spine, vol.
Analysis of MRI and MRI video findings in craniocervical instability pathology of 420 patients with clinical symptoms consistent with possible spinal instability Findings Patients n (%) Complete alar ligament rupture [*] 20 (4.8) Incomplete alar ligament rupture, [*] 52 (12.4) Alar signal-pattern variation; instability 81 (19.3) Alar signal-pattern variation; no instability 102 (24.3) Normal alar signal pattern; no instability 158 (37.6) Dens variation 4 (1.0) Elasticity syndromes 3 (0.7) Total 420 (100) (*.)These 72 patients (17.1%) were referred to a neurosurgeon.