Flashcards in Quizzies (Typical Lumbar Spine: L1-L4) Deck (28):
What accounts for the direction of the lumbar curve?
The vertebral body and intervertebral disc have a greater anterior height than posterior height
What is the effect of aging on the vertebral body of a lumbar vertebra?
Decrease in height, increase in circumference
How many joint surfaces are present in the vertebral body of a typical lumbar?
What muscles may attach to a typical lumbar vertebral body?
Psoas major and psoas minor
Psoas minor will only attach to the vertebral body of which segments?
What is the name given to ligaments which attach the vertebral body to articular process?
Hofmann ligaments are identified in which regions long the vertebral column?
Cervical-upper thoracic region and lumbar region
Cervical-upper thoracic Hofmann ligaments will attach what structures together?
Dura mater to segments above
What is the highest level known to demonstrate Hofmann ligaments?
What is the proposed function of the cervical-upper thoracic Hofmann ligaments?
Resist caudal movement of the dural sac; resist gravitational forces on the dura and cord
Lumbar Hofmann ligaments will attach what structures together?
Dura mater to lower segmental levels
What is the proposed function of the lumbar Hofmann ligaments?
Resist cranial movement of the dural sac during flexion
What osseous conditions of lumbar vertebrae facilitate a spinal tap in this region?
Overlap of the laminae, shingling, diminishes; overlap of the spinous processes, imbrication, diminishes
Beginning with the L1 transverse process, what is the generic direction and relative length of each succeeding lumbar transverse process?
Each transverse process is directed straight lateral and increases in length from L1-L3. L4 then begins to decrease in length
What is the name of the elevation near the origin of the lumbar transverse process?
Congenital elongation of the lumbar accessory process results in what feature?
Congenital elongation of the lumbar accessory process occurs with what frequency?
What ligament(s) will attach to the lumbar accessory process?
What was believed to be entrapped by the mammilo-accessory ligament?
The medial branch of the dorsal ramus of a lumbar spinal nerve
What muscle(s) attach to the lumbar accessory process?
Longissimus thoracis and intertransversarii
What ligament attaches the twelfth rib to the transverse process of L1?
The lumbocostal ligament
What muscles may attach to the transverse process of a typical lumbar vertebra?
Psoas major, quadratus lumborum, longissimus thoracis, rotator brevis rotator longus, and intertransversarii
What ligaments attach to the transverse process of a typical lumbar vertebra?
The lumbocostal, mammillo-accessory, and intertransverse ligaments
What is the orientation of the typical lumbar superior articular facet?
Backward, upward, medial (BUM); typically concave
What is the orientation of the typical lumbar inferior articular facet?
Forward, lateral, downward (FoLD); significant convexity
What is the name given to the projection in the lumbar superior articular process?
What muscles will attach to the mammillary process?
Multifidis and intertransversarii