Ch 10 Bony Thorax Flashcards
What does the bony thorax consist of
12 pairs of ribs
Sternum
12 thoracic vertebrae
SC joints are where
Where the manubrium of the sternum and clavicle meet
What 3 parts make up the sternum
Manubrium
Body of the sternum
Xyphoid process
What does the sternum do
Provide attachment to the costal cartilage of the first 7 pairs of ribs
What projections do you need for a sternum
RAO & lateral
How much of body rotation do you need for a RAO Sternum
15-20°
Where does the CR enter for RAO sternum
1inch laterally from MSP at the level of T7 (can use bottom of the scapula) - top of the IR placed 1.5 inch above the jugular notch
What is the SID for a RAO sternum
30 inch - SSD needs to be at least 12 inches
Breathing for RAO sternum
Shallow breathing preferred but if can’t, expose after expiration
What SID for lateral sternum
72 inch
CR for lateral sternum
Lateral midsternum with top of IR 1.5 inch above jugular notch
Breathing for lateral sternum
Deep inspiration
What do you use for a lateral sternum whenever patient can’t stand
Lateral recumbent sternum
If can’t lay on their side, dorsal decubitus lateral
What do you use when a patient can’t lay prone for RAO sternum
LPO
Where does each rib attach to the vertebrae
Posteriorly
True ribs
Attach directly to the sternum 1-7
False ribs
8-12
Floating ribs
11 & 12 - no costal cartilage
How are the ribs situated in the body
On an oblique plane slanting anteriorly and inferiorly
What does each rib have
Head - posterior - has facet
Neck
Tubercle - has facet
Body
How far inferior are the end of the ribs compared to the head
3-5 inches below
Costovertebral joint
Where rib meets vertebral body
Costotransverse joint
Rib meets transverse process of the vertebrae
Which body habitus has the highest diaphragm
Hypersthenic
Which body habitus has the lowest diaphragm
Asthenic
A full inspiration lowers the diaphragm how much
About 1.5 inches
Respiration for ribs
Upper ribs - hold breathe
Lower ribs - blow out & hold
Which side does an AP/PA of the ribs show
AP - P
PA - A
PA ribs - upper
14 x 17
1.5 inch light about shoulders (top), backs of hands on hips, roll shoulders
CR - inferior Scapula border
AP upper ribs
14 x 17
1.5 inch light above shoulder, backs of hands on hip, shoulders rolled
CR - inferior scapula border
AP lower ribs
14 x 17
Arms up out of view
CR - b/w xyphoid process and bottom ribs
Oblique ribs - which side do you see
AP oblique - closest to IR
PA oblique - away from IR
Oblique ribs projection
14 x 17
45 angulation of body, 1.5 inch light above shoulder, hand behind head
CR - halfway b/w MSP and lateral side of ribs of interest
Which ribs do obliques see best
Axillary
SC joints
6 x 8
CR - T3 (jugular notch)
Expiration and hold
SC joint oblique
6 x 8
Patient 10-15° angled with joint of interest closest to IR, center to T3 (jugular notch
CR perpendicular to SC joint of interest (if left side is closest, CR will enter on the right side of the spine)
