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Rad Pro 3
Week # 3 Lumbar, Sacrum, And Coccyx
Question | Answer |
---|---|
What are the largest vertebrae? | lumbar |
What holds most the body's weight and which vertbrae is the largest? | lumbar spine; L5 |
How is the intervertebral foramina best demonstrated on the lumbar spine? | 90 degrees (true lat) |
What forms the intervertebral foramina? | superior and inferior vertebral notches (space between two pedicles when stacked) |
What forms the zygapophyseal joints? | SAPS & IAPS |
Where do the zygo's lie to MSP? | 30-50 degress |
For radiography what will best demonstrate the zygo's? | 45 degree oblique |
The upper lumbar vertebrae lie at a ____ degree and the lower lumbar lie at a ____ degree. | 30; 50 |
What is the pars interarticularis? | the portion of the lamina between the superior and inferior articulating processes |
How many "sets" (pairs) of sacral foramina are there on the sacrum? | 4 |
Where are the alae or wings located? | lateral to the first sacral segment |
The 2 SAPS of the sacrum articulate with the IAPS of the 5th lumbar vertebrae to from what joint? | zygo |
Where is the sacral promontory? | the anterior ridge of the first sacral segment |
The sacral canal lies posterior to the body of the ________; this is continuation of _______. | first sacral segement; spinal canal |
What is the median sacral crest formed by? | fusion of the spinous processes |
At what surface does the sacrum articulate with the ilium at? | auricular surface |
What represents the IAPS for the 5th sacral segment? | sacral horns or cornau |
Where does the sacral horns articulate with? | cornau of the coccyx |
Each SI joint opens obliquely posteriorly at an angle of _____; and which side does it show? | 30 degrees; upside |
Where is the base of the coccyx? | superior |
Where is the apex of the coccyx? | inferior |
The base has 2 _____ _____ projecting laterally. | transverse processes |
To visualize the scotty dog what degrees is the pt? | 45 degrees |
What are the scotty dogs neck? | pars interarticularis |
What are the scotty dogs ears? | SAPS |
What are the scotty dogs eyes? | pedicle |
What are the scotty dogs nose? | transverse process |
What are the scotty dogs front leg? | IAPS |
What lumbar vertebrae should u see good scotty dogs? | L2-L4 |
Which way does the dog face? | downside |
The leg of the superior dog and the ear of the inferior dog form the _______. | zygo joint |
What is the clasification and mobilty type for zygo joints? | synovial and diarthrodial |
What is the classification of intervertebral joints? | cartilaginous and amhithrodial (slightly moveable) |
In the L-spine intervertebral foramina are visualized on what? | 90 degree true lateral |
In the L-spine the zygo's are best visualized on what? | Obliques |
Anterior obliques show the _____. | upside joints |
Posterior obliques show the ______. | downside joints |
At what degree do u do a general lumbar oblique? | 45 |
What degree oblique to best visualize L1-L2? | 50 degrees |
What degree oblique to best visualize L5-S1? | 30 degrees |
Why is the L1 shot 50 degrees? | It is closer to thoracic vertebrae that require a 70 - 75 degree oblique. |
What positioning landmark is at the level of mid coccyx? | pubic symphysis |
ASIS is the same level as the ____ or ____ sacral segment. | 1st; 2nd |
What level is iliac crest? | L4-L5 |
What level is the lower costal margin? | L2-L3 |
Who should u always shield while doing a L-spine? | males |
Why flex kness on an AP L-spine? | brings spine closer to Ir and Lumbar column more parallel to the table top. |
What is the advantage of doing an L-spine PA vs AP? | lower dose to female ovaries and place intervertebral disk more parallel with the divergence of the beam. |
What is the dis-advantage of doing an L-spine PA vs AP? | large OID of vertebrae |