Atypical Lumbar Vertebrae L5 Flashcards
What is the appearance of the fifth lumbar vertebral body fro the lateral view
anterior height is greater than posterior height by several millimeters; it appears to form a wedge on a lateral x-ray view
how many synovial joint surfaces are present at the fifth lumbar vertebral body
none
how many fibrous (amphiarthrosis) syndesmosis joint surfaces are present on the L5 vertebral body
four
how many joint surfaces are present on the vertebral body of the fifth lumbar
six
how many cartilaginous (amphiarthrosis) symphysis joint surfaces are present on the vertebral body of L5
two
what muscles attach to the fifth lumbar vertebral body
psoas major
What are the atttachment sites of the superior corporotransverse ligament at the L4-L5 intervertebral foramen
L4 vertebral body and L4-L5 intervertebral disc to the transverse process of L5
What are the attachment sites of the inferior corportransverse ligaments at the L4-L5 intervertebral foramen
L5 vertebral body and L5-S1 intervertebral disc to the transverse process of L5
What characteristic of the L1-L4 pedicle may be used to differentiate it from the L5 segment
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
What is the generic direction and length of the fifth lumbar transverse process
it is directed straight lateral and is the shortest of all lumbar transverse process
What accounts for the shortness of the L5 transverse process
the hip/innominate bones diminish the available space in the transverse plane
What parts of the lumbar transverse are homologous to the cervical transverse process parts
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
What muscles may attach to the transverse process of the fifth lumbar vertebra
psoas major, quadratus lumborum, longissimus thoracis, rotator brevis, rotator longus and intertransversarii
What ligaments traditionally attach to the transverse process of the fifth lumbar vertebra
lumbosacral, iliolumbar and mammillo-accessory ligaments
What is the orientation of the fifth lumbar superior articular facet
BUM backward upward medial, typically concave
What is the orientation of the fifth lumbar inferior articular facet
FoLD forward lateral and down significant convexity
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
Knife clasp syndrome
What muscles will attach to the fifth lumbar spinous process
latissimus dorsi iliocostalis lumborum
longissimus thoracis, multifidis,
rotator longus, rotator brevis and interspinalis
How many synovial joints are maximally observed at each lumbar vertebra
L1-L5 four each
How many joints are traditionally observed at each lumbar vertebral body
L1-L5 six each
What is the inferior articular facet orientation at each lumbar vertebrae
FoLD forward lateral down
