W3 - Thoracic Spine Flashcards
Thoracic cage structure
Vertebral column (12 vertebrae)
12 pairs of ribs
Intercostal spaces
Costal cartilages
Sternum
Thoracic cage function
Protect vital organs
Provides muscle attachments
Assists respiration
Boney landmarks of Typical thoracic vertebrae
Body
Pedicles
Vertebral foremen
Articular processes
Costal/demi facets
Transverse processes
Lamina
Spinous processes
Name the 4 A Typical thoracic vertebrae
T1
T10
T11
T12
Explain what makes each A typical thoracic vertebrae
T1 = vertebrae articulates with a single facet of its own rib
T10/11 = lack inferior Demi facets on their body
T12 = lack transverse costal facets, articulating with the head of their own rib
Thoracic rule of 3
T123 = SP & TP equal
T456 = SP 1/2 level below TP
T789 = SP 1 level below TP
T10 = SP 1 level below TP
T11 = SP 1/2 level below TP
T12 = SP & TP equal
How many true, false & floating ribs are there
True = 7
False = 5 pairs
Floating = ribs 11 &12
What are the contents and muscles in the intercostal spaces
Contents = intercostal arteries & veins, intercostal nerve
Muscles = external, internal & innermost intercostal
Name the 2 joints between the thoracic vertebrae
Intervertebral
Facet joint
Name the 2 joints between the ribs & spine
Costovertebral joint = synovial plane
Costatransverse = synovial plane
Name the 3 joints between cartilage & ribs/sternum
Costochondral joint = primary cartilaginous
Interchondral joint = synovial plane
Sternocostal = 1st primary cartilaginous joint
Name the 3 joints of the sternum
Sternoclavicular = synovial saddle
Manubriosternal = symphysis
Xiphisternal = synchondrosis
Movement available at the thoracic spine
Greater range of rotation
Flexion & ,ayer al flexion are restricted
What accessory movements are available at the thoracic spine
Central PA : spinous processes
Unilateral PA : transverse processes
Unilateral PA : rib angle
