Atlanto-occipital joint Flashcards Preview

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Flashcards in Atlanto-occipital joint Deck (9)
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1
Q

What is the classification of the atlanto-occipital joint?

A

synovial (diarthrosis) ellipsoidal

2
Q

What other joint space does the atlanto-occipital joint communicate with?

A

the posterior bursa of the median atlanto-axial joint

3
Q

What is the median thickening of the anterior atlanto-occipital ligament called?

A

the anterior longitudinal ligament

4
Q

Ossification of the free margin of the posterior atlanto-occipital ligament results in which atypical bone classification?

A

accessory bone

5
Q

What other name may be used to identify a ponticulus posticus?

A

Kimmerle’s anomaly

6
Q

**What amount of flexion - extension is accommodated by the atlanto-occipital joint?

A

about twenty-five degrees

7
Q

**What amount of axial rotation is accommodated by the atlanto-occipital joint?

A

about three to eight degrees one side axial rotation

8
Q

**What amount of lateral bending is accommodated by the atlanto-occipital joint?

A

about five degrees

9
Q

**Which motion is best accommodated by the atlanto-occipital joint?

A

flexion - extension

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