Anatomy of T -Spine Flashcards
What particular vertebrae has facets?
WHY do they have these ?
Thoracic vertebrae are specialised to have facets on the vertebral body and transverse processes for attachment of the ribs.
What are the facets found on the thoracic vertebrae?
Costal demi-facets
Costal facet
transverse costal facets
What do the demi facets articulate with ?
Where are they present?
These articulate with the heads of the ribs.
Two smaller facets – one superior and one inferior
Present on T2-T9
Superior demi-facet articulates with the same number of rib as the number of vertebra – i.e. T2 superior demi-facet = Head of Rib 2
Inferior demi-facet articulates with the next number of rib from the number of vertebrae – i.e. T2 inferior demi-facet = Head of Rib 3
T1 has a costal facet for Rib 1, and an inferior demi-facet for Rib 2
T9 has a superior demi-facet for Rib 9, no inferior demi-facet
What facets are present on t2-t9
what is different about t1 and t9 ?
Demi facets and transverse facets
Present on T2-T9
T1 has a costal facet for Rib 1, and an inferior demi-facet for Rib 2
T9 has a superior demi-facet for Rib 9, no inferior demi-facet
What would the superior and inferior demi facet of vertebrae 5 articulate with ?
Superior demi-facet articulates with the same number of rib as the number of vertebra
Inferior demi-facet articulates with the next number of rib from the number of vertebrae
Superior - rib 5
inferior rib 6
What are the transverse costal facets ?
What vertebrae are they present in ?
Transverse processes have a costal facet to allow articulation of the tubercle of the rib.
Transverse costal facet articulates with same number of rib as vertebra – i.e. Transverse process of T2 articulates with Rib 2 tubercle
Present on T1-T9 usually, sometimes T10
Not present on T11 and T12
What is the movements for the thoracic spine ?
Movements:
Rotation
Limited flexion and extension – why?
