Atypical Lumbar Vertebrae L5

Question 1

What is the appearance of the fifth lumbar vertebral body fro the lateral view

Answer 1

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

Question 2

how many synovial joint surfaces are present at the fifth lumbar vertebral body

Answer 2

none

Question 3

how many fibrous (amphiarthrosis) syndesmosis joint surfaces are present on the L5 vertebral body

Answer 3

four

Question 4

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

Answer 4

six

Question 5

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

Answer 5

two

Question 6

what muscles attach to the fifth lumbar vertebral body

Answer 6

psoas major

Question 7

What are the atttachment sites of the superior corporotransverse ligament at the L4-L5 intervertebral foramen

Answer 7

L4 vertebral body and L4-L5 intervertebral disc to the transverse process of L5

Question 8

What are the attachment sites of the inferior corportransverse ligaments at the L4-L5 intervertebral foramen

Answer 8

L5 vertebral body and L5-S1 intervertebral disc to the transverse process of L5

Question 9

What characteristic of the L1-L4 pedicle may be used to differentiate it from the L5 segment

Answer 9

on cranial view, the lateral surface of the pedicle is apparent on a L1-L4 segment. At L5 the transverse process originates from the vertebral body, pedicle and lamina-pedicle region

Question 10

What is the generic direction and length of the fifth lumbar transverse process

Answer 10

it is directed straight lateral and is the shortest of all lumbar transverse process

Question 11

What accounts for the shortness of the L5 transverse process

Answer 11

the hip/innominate bones diminish the available space in the transverse plane

Question 12

What parts of the lumbar transverse are homologous to the cervical transverse process parts

Answer 12

L: transverse tubercle, C: anterior tubercl
L: transverse process, C: costal element
L: accessory process, C: posterior tubercle
L: transverse process origin, C: true transverse process

Question 13

What muscles may attach to the transverse process of the fifth lumbar vertebra

Answer 13

psoas major, quadratus lumborum, longissimus thoracis, rotator brevis, rotator longus and intertransversarii

Question 14

What ligaments traditionally attach to the transverse process of the fifth lumbar vertebra

Answer 14

lumbosacral, iliolumbar and mammillo-accessory ligaments

Question 15

What is the orientation of the fifth lumbar superior articular facet

Answer 15

BUM backward upward medial, typically concave

Question 16

What is the orientation of the fifth lumbar inferior articular facet

Answer 16

FoLD forward lateral and down significant convexity

Question 17

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

Answer 17

Knife clasp syndrome

Question 18

What muscles will attach to the fifth lumbar spinous process

Answer 18

latissimus dorsi iliocostalis lumborum
longissimus thoracis, multifidis,
rotator longus, rotator brevis and interspinalis

Question 19

How many synovial joints are maximally observed at each lumbar vertebra

Answer 19

L1-L5 four each

Question 20

How many joints are traditionally observed at each lumbar vertebral body

Answer 20

L1-L5 six each

Question 21

What is the inferior articular facet orientation at each lumbar vertebrae

Answer 21

FoLD forward lateral down