(OS L1) Ribs (Joy) Flashcards
The _______ of a typical rib articulates with its own vertebra at the ________ costal facet, and articulates with the vertebra above at the ______ costal facet
Head; superior; inferior
______ = area of the rib between the head and the tubercle
Neck
______ = area of the rib that articulates with the transverse process of the corresponding vertebra
Tubercle
_____ = abrupt change in rib curvature
Angle
2 joints associated with anterior rib cage
Costochondral joint
Sternocostal joint
Which ribs only articulate with their own vertebrae, and NOT the one above?
1
10
11
12
Which ribs do NOT have tubercles, and therefore do not articulate with transverse processes?
11
12
Which ribs are considered atypical?
1
2
11
12
[sometimes 10]
Which ribs are considered typical?
3-9 [sometimes 10]
True ribs 1-7 have cartilage attachments to _______
False ribs 8-10 have cartilage attachments to the costal cartilage of the rib _______
Sternum
Above
T/F: floating ribs 11 and 12 have no anterior attachment
True
The sternal angle of the sternum is associated with which rib’s costal cartilage?
2
Which of the following is not associated with the ribs in some way?
A. Scalenes B. Pectoralis minor m. C. Serratus anterior m. D. Latissimus dorsi m. E. Quadratus lumborum m. F. All of the above are associated with the ribs
F. All of the above are associated with the ribs
Scalenes elevate 1st and 2nd rib
Pec minor originates on ribs 3,4,5
Serratus anterior inserts on ribs 2-8
Part of Lat dorsi originates on lower 4 ribs
Quadratus lumborum inserts on 12th rib, fixes it during inhalation
Which muscles associated with the ribs are involved in respiration?
External intercostals
Internal intercostals
Innermost intercostals
Diaphragm
Action of external intercostals
Elevate ribs during forced inspiration
Action of internal intercostals
Depression of ribs
Action of innermost intercostals
Depression of ribs
Action of diaphragm
Descends during inspiration
Differentiate the actions of the 3 scalene muscles
Anterior scalene and middle scalene elevate 1st rib
Posterior scalene elevates 2nd rib
How much of the rib cage circumference is covered by the following:
External intercostal mm.
Internal intercostal mm.
Innermost intercostal mm.
External = starts from spine around to costal cartilage
Internal = starts from rib angle to sternum
Innermost = starts from rib angle to costal cartilage
Which of the following is most superior in the costal groove on the inferior side of each rib (between the internal intercostal m. and the innermost intercostal m.)?
A. Intercostal nerve
B. Intercostal vein
C. Intercostal artery
D. Phrenic nerve
B. Intercostal vein
[VAN from superior to inferior]
Respiratory motion known as “bucket handle”
Moves superiorly and laterally
Increases transverse diameter
Ribs 1-2, 8-10
Respiratory motion known as “pump handle”
Moves superiorly and anteriorly
Increase A/P diameter
Ribs 3-7
Respiratory motion of ribs 11 and 12 is ______ and _______ with inhalation
Downward; posterior
Respiratory motion of ribs 11 and 12 is _____ and _____ with exhalation
Upward and superior
When T5 is rotated left, aka torsonal movement, what motions occur with the associated rib?
Left 6th rib: posterior aspect turns externally; anterior extremity more flat with its inferior border sharp
Right 6th rib: posterior aspect rib turns internally; anterior extremity having its superior margin accentuated
[caused by articulation at the inferior costal facet
What is considered non-physiologic movement of the ribs?
Due to trauma or repetitive microtrauma; ribs become subluxed anteriorly or posteriorly
What are the 2 general types of rib SD?
Respiratory SD: where rib is unable to move in its normal physiologic motion (inhalation vs. exhalation dysfunction)
Structural SD: can be torsional where rotation becomes fixed, or non-physiologic where the SD always exists (subluxation)
If ribs 1,2, and 8-10 have bucket handle motion, and ribs 3-7 have pump handle motion, what type of motion occurs at ribs 11-12?
Caliper
______ dysfunction = rib being held in a position of inhalation such that motion toward inhalation is more free and motion toward exhalation is restricted
Inhalation
[the opposite is true of exhalation dysfunction]
What is the “key rib”?
The rib that maintains a group of ribs in dysfunctional motion = this is the rib you treat FIRST!
If a group of ribs is found to have an inhalation SD, which one is your key rib aka the one you treat first?
The bottom of the dysfunctional group
[mnemonic BITE = Bottom Inspired, Top Expired]
Causes of rib dysfunction
Thoracic scoliosis or kyphosis
Asymmetries such as pectus excavatum or carinatum
Osteoporosis or osteoarthritis
COPD (increased AP diameter)
Abnormal tension in musculature
Trauma to rib cage
Lifestyle and affective states
An elevated rib would indicate what type of SD?
Inhalation dysfunction
Treatment for inhalation dysfunction at any rib 1-10
Depress key rib with exhalation
Treatment for inhalation dysfunction at ribs 11-12
Quadratus lumborum m.
Treatment for exhalation dysfunction at rib 1
Ant/med scalene m.
Treatment for exhalation dysfunction at rib 2
Posterior scalene m.
Treatment for exhalation dysfunction at rib 3-5
Pectoralis minor m.
Treatment for exhalation dysfunction at ribs 6-8
Serratus anterior m.
Treatment for exhalation dysfunction at rib 9-10
Latissimus dorsi m.
Treatment for exhalation dysfunction at ribs 11-12
Quadratus lumborum m.
What are the 5 rib motions?
- bucket handle
- pump handle
- caliper
- torsional
- non-physiologic
Describe the movement of the bucket handle motion. Which ribs move?
- superiolateral movement = ↑ transverse diameter
- ribs 1-2, 8-10
Describe the movement of the pump handle motion. Which ribs move?
- Superoanterior movement = ↑ AP diameter
- Ribs: 3-7
Describe the movement of the caliper/pincer motion. Which ribs move?
- downward and posterior w/ inhalation
- up and superior w/ exhalation
- ribs 11 and 12
Subluxation
incomplete/partial dislocation of joint or organ
Describe torsional movement: how are both the same/opposite side of the ribs changed?
Thoracic vertebra is rotated either side, say to the right
Same side/”right”:
- Posterior rib on inferior segment turns externally
- anterior rib on inferior segment: more flat w/ its inferior sharp border
Opposite side/”left”:
- Posterior rib on inferior segment turns internal
- anterior rib on inferior segment: superior margin accentuated
Describe non-physiologic movement of the rib:
- cause?
- rib dysfunction and effect
- rib state?
- due to trauma/repetitive movement
- ribs subluxed (misaligned/partially dislocated) anteriorly or posteriorly -> create abnormal/hypernormal ribs that are carried either more anterior/posterior along axis b/t costovertebral or costotransverse articulations
- 1+ ribs lose usual plasticity and become restricted
What causes torsional rib movement?
rotation of thoracic spine
2 types of respiratory rib dysfunctions
inhalation and exhalation restriction
5 types of structural rib dysfunction
- Anterior and posterior subluxation
- Superior subluxation of the first rib
- Anteroposterior compression
- Lateral compression
- Torsion
What types of rib movement can cause respiratory somatic dysfunction? Why?
Rib can’t move in normal physiologic motion
- bucket handle (rib 1,2,8-10)
- pump handle (rib 3-7)
- Caliper (rib 11-12)
What types of rib movement can cause structural somatic dysfunction? Why?
- torsional- rotation of thoracic spine, rotation becomes fixed
- non-physiologic: anterior/posterior subluxation
Describe an inhalation SD
Rib being held in a position of inhalation such that motion toward inhalation is more free and motion toward exhalation is restricted.
Describe an exhalation SD
Rib being held in a position of exhalation such that motion toward exhalationis more freeand motion toward inhalation is restricted.
What is the key rib in a SD?
- Key rib –rib that maintains a group of ribs in dysfunctional motion
- Treat this rib FIRST
What is the key rib in an inhalation SD?
Bottom of the group
What is the key rib in an exhalation SD?
Top Expired
Exhalation Dysfunction = Top of the group
other names for inhalation SD
- Inhaled
- Inspired
- Moves inhaled
- Symmetrical in inhalation
- Doesn’t move in exhalation
- Elevated rib
- Restricted in exhalation/Exhalation restriction
other names for exhalation SD
- Exhaled
- Expired
- Moves exhaled
- Symmetrical in exhalation
- Doesn’t move in inhalation
- Depressed rib
- Restricted in inhalation
- Inhalation restriction
What is the general tx for each rib (or rib group) w/ an inhalation SD (exhalation restriction)?
- Ribs 1-10: Depress key rib with exhalation
* Ribs 11-12 –Quadratus lumborum
What is the general tx for each rib (or rib group) w/ an exhalation SD (exhalation restriction)?
- Rib 1 –Ant/Med Scalene
- Rib 2 –Post Scalene
- Ribs 3-5 –Pectoralis minor
- Ribs 6-8 –Serratus anterior
- Ribs 9-10 –Latissimus dorsi
- Ribs 11-12 –Quadratus lumborum
What happens to rib location w/ osteoporosis?
ribs become anteriorly depressed
What does BITE stand for?
Bottom Inhalation - Top Exhalation
*tells you what rib will be in the “key rib”