Rib DSA

Question 1

What does the Rib head articulate with?

Answer 1

Superior costal facet of its own vertebra

inferior costal facet of the vertebra above

Question 2

What does the tubercle on the rib articulate with?

Answer 2

the transverse process of the corresponding vertebra.

Question 3

Which ribs only articulate with their own vertebrae (NOT the one above as well)

Answer 3

1, 10, 11, 12

Question 4

What ribs do not have tubercles and therefore do not articulate with transverse processes?

Answer 4

11, 12

Question 5

Which are the atypical ribs?

which are the typical ribs?

sometimes which rib fits in both categories?

Answer 5

1,2, 11, 12

3-9

10

Question 6

which are the true ribs?

false ribs? floating?

why are they called this?

Answer 6

1-7 because cartilage attaches to the sternum

8-10 –> cartilage attaches to the costal cartilage of the rib above

11-12, no anterior attachment

Question 7

Which muscles elevate the 1st rib?

Answer 7

Anterior Scalene and Middle Scalene

Question 8

Which muscle elevates the 2nd rib?

Answer 8

Posterior Scalene

Question 9

Which muscle elevates the 3-5 ribs?

Answer 9

Pectoralis Minor

Question 10

Which muscle attaches to ribs 6-8?

Answer 10

Serratus Anterior

Question 11

What ribs attach to 9-10?

Answer 11

Latissimus dorsi

Question 12

Which muscle is only attached to the inferior aspect of rib 12 and is used to fix the 12th rib in inhalation?

attaches to 11 and 12

Answer 12

Quadratus lumborum

Question 13

Mnemonic for the anterior scalene muscles?

Answer 13

I get up at 1 AM 2 P

1 Anterior and Middle

2 Posterior

Question 14

What does the External Intercostals do?

What do the internal intercostals do?

innermost?

Answer 14

elevate ribs during forced inspiration

depression of ribs

depression of ribs

Question 15

what way does the diaphragm move during inspiration?

Answer 15

inferiorly

Question 16

along the costal groove, what’s running most superior? then what? then what?

Answer 16

VAN

Vein, Artery, Nerve

Question 17

What ribs require the bucket handle motion? what diameter is changing?

what ribs require pump handle motion? what diameter is changing?

caliper motion?

Answer 17

1-2, 8-10 transverse

3-7, A/P

11 + 12

Question 18

how do the 11th and 12 ribs move during inhalation?

exhalation

Answer 18

down and posterior

up and anterior

Question 19

if someone had a torsional movement of the ribs, what would you expect for the left and right rib?

Assume T5 is rotated to the left

what is causing this?

Answer 19

the left 6th rib will externally turn at the posterior aspect, the anterior extremity is more flat with its inferior border

the right rib will internally turn at the posterior aspect, the anterior extremity having its superior margin accentuated.

articulation at the inferior costal facet… SO ROTATION OF THE THORACIC SPINE

Question 20

What is non-physiologic movement of the ribs?

Answer 20

due to trauma or repetitive micro trauma

The ribs become sublimed anteriorly or posteriorly.

so it creates abnormal hyper mobile ribs with the rib being carried more either anteriorly or posteriorly along the axis of motion between the costovertebral or the costotransverse articulations

so one or more ribs lose its usual easy movement and becomes restricted.

Question 21

Explain an inhalation dysfunction?

exhalation dysfunction?

Answer 21

motion towards inhalation is free but it won’t go down back into the exhalation position

it’s free in exhalation but going towards inhalation is not happening.

Question 22

when someone has osteoporosis or osteoarthritis, what happens to their ribs?

Answer 22

anteriorly depressed (exhalation SD)