Atypical lumbar vertebra: L5

Question 1

How many joint surfaces are present on the vertebral body of the fifth lumbar?

Answer 1

six

Question 2

How many synovial joint surfaces are present on the vertebral body of the fifth lumbar?

Answer 2

none

Question 3

How many cartilaginous (amphiarthrosis) symphysis joint surfaces are present on the vertebral body of L5?

Answer 3

two

Question 4

What muscle(s) attach to the fifth lumbar vertebral body?

Answer 4

psoas major

Question 5

What is the reported angulation and X-ray appearance of the fifth lumbar articular facets?

Answer 5

They lie in the vertical plane and are coronal facets

Question 6

What is the orientation of the fifth lumbar superior articular facet?

Answer 6

backward, upward, medial (BUM_; typically concave

Question 7

What is the name given to the congenital condition in which the fifth lumbar spinous process is elongated, the sacrum exhibits spina bifida, and dorsiflexion produces pain?

Answer 7

Knife Clasp Syndrome

Question 8

What muscles will attachto the fifth lumbar spinous process?

Answer 8

lattissimus dorsi, ilicostalis lumborum, longissimus thoracis, multifidis, rotator longus, rotator brevis and interspinalis

Question 9

What is the appearance of the fifth lumbar vertebral body from the lateral view?

Answer 9

anterior height is greater than posterior height by several millimeters; it appears to form a wedge on a lateral X-ray view

Question 10

How many fibrous (amphiarthrosis) syndesmosis joint surfaces are present on the vertebral body of L5?

Answer 10

four