Thoracic Flashcards
Transverse Process: Rule of 3’s
T1-3: SP + TP same level
T4-6: TP are half segment above its SP
T7-9: TP are full segment above its SP
T10-12: Gradual return to same level
Coupled Motion in Cervicothoracic region
SB + Rot = Same side
Coupled Motion in Mid TS region
varying coupling of SB + Rot, but assume SB + Rot = same side
Coupled Motion in Thoracolumbar region
SB + Rot = opposite side
Describe rib articulation of costotransverse joints
Rib articulates with TP
Describe rib articulation of costovertebral joints
Rib articulates with disc and vertebral body (at same level)
Describe articulations of sternocostal joints
Cartilaginous attachments to sternum
Describe articulations of costochondral joints
cartilaginous attachments to ribs
Which attachment sites are areas of common somatic dysfunction?
Costotransverse and Costovertebral joints
The first rib only attaches to the vertebral body at what spinal level?
T1
The thoracic region is __________ring
Osseous ring
What does it mean that the thoracic region is an osseous ring?
If there’s an injury/trauma to one point, the whole osseous ring is off. Transfer load is affected
What muscles are attached to the first rib?
Anterior and Middle scalenes
If the anterior and/or middle scalenes are shortened or increased in tone, what happens to the first rib?
Can be elevated
Sympathetic Trunks innervation
heart, esophagus, abdominal viscera
Cord Segments (T1-6) innervation
head, neck, UE, thorax
Cord Segments (T7-L2) innervation
LE, abdominal cavity, pelvic cavity
What is the critical zone of the T-spine?
T4-9
Why are T4-9 segments are critical zones?
Central canal is narrow, can lead to cord compression
Which thoracic region has the most rotation?
Mid TS
During Thoracic Flexion, ribs rotate ________
anteriorly
During Thoracic Extension, ribs rotate _________
posteriorly
During Thoracic SB + Rot, ___________ glide closing on ipsilateral side
Inferior
During Thoracic SB + Rot, ipsilateral rib rotates ________
Posteriorly
During Thoracic SB + Rot, contralateral rib rotates _______
Anteriorly
During respiration, describe the “Pump Handle” motion of ribs
Upward movement of upper ribs and sternum
Increase in ANT-POST dimensions of thorax
During respiration, describe the “Bucket Handle” motion of ribs
Lateral and upward movement of lower ribs
Increase in lateral dimensions of thorax