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Flashcards in Final atlanto axial joint Deck (10)

which atlanto axial joint is identified as a synovial plane diartrosis arthodia

the lateral atlanto axial joint


what are the names given to the synovial joint spaces of the median atlanto axial joint

the anterior bursa and the posterior bursa


what is the function of the transverse atlantal ligament

it is the primary stabilizer of the atlanto axial joint restricting the distance of C2 from the anterior arch of C1


What is the ADI

the atlanto dental interspace a radiographic distance between the surfaces of the anterior bursa of the median atlanto axial joint


the ADi is observed between which surfaces

the fovea dentis of C2 and the facet for fovea dentis of C2


what is the ADI of children compared with that of adults

about 4.5mm in children
a range of 2-3mm or about 2.5 in adults


what are the attachment sites for the accessory atlanto axial ligament

the base of the odontoid process and vertebral body of axis to the tubercle for the transverse atlantal ligament on the lateral mass of C1; a superior continuation may attach on the occipital bone just behind that of the alar ligament


what are the degrees of movement facilitated at the atlanto axial joint

about 20 degrees flexion extension, 40 degrees one side axial rotation, and 5 degrees of lateral bending


the occiput C1-C2 joint complex accounts for what percent of all cervical axial rotation

about 60%


which atlanto axial joint is identifies as a synovial pivot diarthrosis trochoid

the median atlanto axial joint

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