Final Addtional vertebral column arthrology Flashcards Preview

Spinal Anatomy Summer 2015 > Final Addtional vertebral column arthrology > Flashcards

Flashcards in Final Addtional vertebral column arthrology Deck (11)
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1
Q

what other joint space does the atlanto occipital joint communicate with

A

the posterior bursa of the median atlanto axial joint

2
Q

what is the classic function of the anterior atlanto occipital ligament

A

it brakes or limits extension of the skull over the cervical spine

3
Q

ossification of the free margin of the posterior atlanto occipital ligament results in which atypical bone classification

A

accessory bone

4
Q

what other name may be used to identify a ponticulus posticus

A

kimmerles annomaly

5
Q

what names are given to the opening formed by the ponticulus posticus

A

arcuate foramen or retroarticular canal

6
Q

what is the classic function of the posterior atlanto occipital ligament

A

it brakes or limits axial rotation flexion and perhaps lateral bending of the skull on atlas

7
Q

what amount of flexion extension is accomodated by the atlanto occipital joint

A

about 25 degrees

8
Q

what amount of axial rotation is accomodated by the atlanto occipital joint

A

about 3 to 8 degrees one side axial rotation

9
Q

what amount of lateral bending is accommodated by the atlanto occipital joint

A

about 5 degrees

10
Q

which motion is best accomodated by the atlanto occipital joint

A

flexion extension

11
Q

what is the classification of the atlanto occipital joint

A

synovial diarthroses ellipsoidal

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