Thoracic Wall Flashcards
which ribs are true ribs?
1-7
what determines a true rib?
attaches directly to sternum via costal cartilage
which ribs are false indirectly attached ribs?
8-10
which ribs are false floating ribs?
11-12
ribs are what type of bone?
curved flat bones
heads of ribs 2-9 articulation
Sup facet: vertebral body above Inf facet: vertebral body below Crest - projection between articular facets
what is found in the costal groove?
intercostal blood vessels, nerve, and muscles
what part of the rib forms the costochondral joint?
cup for the costal cartilage
T2-T9 articulate with ribs where?
bilaterally demifacets on sup/inf surfaces
plane of articular processes allows T vert to do what?
rotate and ab-/adduct but not FL/EX
joint type for manubrium and 1st rib
synchondrosis
Costovertebral joint type
articulations are planar but overall joint is condyloid
Costovertebral joint, # of articulations
typically 3 (ribs 2-9)
Costovertebral joint ligaments
1). strong capsule 2). intra-articular ligament 3). radiate ligament
collective movements at the Costovertebral joints?
pump/bucket handle – each articulation rotates a little which collectively elevates/depresses the sternum
how many articulations does a costotransverse joint have?
1 articulation per rib
where does the costotransverse joint articulate?
transverse process of the inferior vertebrae
Costotransverse joint type
planar
ribs 1-6 costotransverse joints
slightly convex (rib) with concave (transverse process) – allow rotation = pump handle
ribs 7-10 costrotransverse joints
flat planar - allow gliding = bucket handle
Costotransverse joint ligaments
weak capsule, lateral and superior costotransverse ligaments
Sternocostal joints
1). rib 1 - synchondrosis 2). ribs 2-10 have costochondral and sternochondral joints
costochondral joint type
synchondrosis (rib to cartilage)
sternochondral joint type
synovial planer (cartilage to sternum)