lumbar Flashcards
how many lumbar vertebrae are in the body?
5
what are the common site for fracture in the lumbar vertebrae
the disk between inferior lumbar vertebrae
the palpable lower tip of each vertebrae lie at what level?
level of intervertebral disk space inferior to each body
what projects posteriorly from superior and lateral parts of the posterior surface of the vertebral body?
pedicles
the intervertebral notches come together to form?
intervertebral foramina
The intervertebral foramina are at what angle to the MSP?
90°
Intervertebral foramina are best demonstrated on what projection
lateral
what is the portion of each lamina between the superior and inferior articular processes called
pars interarticularis
what is broad/flat and directed posteriorly and medially from the pedicles?
laminae
The pars interarticularis is demonstrated radiographically best on what projection?
oblique
the articulation between the facets of the articular processes are called?
zygapophyseal joints
zygapophyseal joints for what angle from the MSP ?
30-50°
The upper lumbar zygapophyseal joints are at what angle from msp?
50°
The lower lumbar zygapophyseal joints are at what angle from MSP?
30°
the zygapophyseal joints are best demonstrated on what projection?
45° oblique
the sacrum is made out of how many bones that fused together
5
what is the prominent ridge on the base of the sacrum
sacral promontory
what is formed by the fused spinous processes of the sacral vertebra
median sacral crest