Spinal Lecture 8 - Costal Joints Flashcards
Any disturbance that reduces mobility of costal joints will affect _____
respiration
heads of the rib articulate with the ___ (_____) on the margins of adjacent thoracic vertebral bodies and IVD between them
facets (demifacets)
the ____ ribs articulate with a single vertebrae by a simple synovial joint
1st, 10th, 11th, 12th
the ______ connects costal heads to the circumference of the articular surfaces formed by IVD and demifacets of adjacent vertebrae
fibrous capsule
Costovertebral joints: posterior fibers of the capsule are continuous with the _____ ligaments
costotransverse
______ ligaments connect the anterior parts of each costal head to the bodies of two vertebrae and their IVD
Radiate
What does the superior / inferior fibres of the radiate ligament attach to
superior fibers ascend to the vertebral body above
inferior fibres to the body below
What does the intermediate fibres of the radiate ligament attach to?
Attached to disc
intermediate fibers, shortest and least distinct, are horizontal and attached to the disc
in the first rib the radiate ligament is attached to __ and ___
C7 and T1
What does the radiate ligament attach to at the 10th-12th rib?
in 10th-12th rib the ligament attaches to the vertebrae above and below
Costovertebral joints: Describe the intra-articular ligament
A1: attached laterally to the crest between the costal articular facets
A2: medially to the IVD dividing the joint into 2 synovial cavities
D: Intra-articular ligament is a short flat band
R: T1 and T10-12 the intra-articular ligament is absent
Describe costovertebral joint test
place your thumb on the spinous process and finger on the angle of the rib…the movement is anterior and medial so the spinous process should move away from the test side
Due to rib and proximity there is little gliding action
the facet of a costal tubercle articulates with the ____ of its own vertebra. Which ribs lack this articulation?
TP
11 and 12
Costotransverse joints: the fibrous capsule is thin and attached to _____ and it has synovial lining
articular peripheries
T/F costotransverse joints ligaments are capsular
True
Costotransverse joints: the 12th rib is connected at the shaft, near the head, to the base of the 1st lumbar transverse process by a ________ ligament
lumbocostal ligament
Describe what spaces the costotransverse ligament fills
fills the costotransverse foramen between the costal neck and the corresponding transverse process—the posterior aspect of the rib, the head and the non-articulating tubercle
Describe the superior CT ligament
Anterior layer:
A1:costal neck
A2:lower aspect of the TP above
FD: passing upwards and laterally
Posterior layer:
A1: attached dorsally on the costal neck, the superior part of the rib,
A2: TP above
FD: ascending posteromedially
Describe the lateral CT ligament
A1: Apex of a transverse process
A2: rough non-articular part of the adjacent costal tubercle
FD:passes obliquely from the apex
D: short, thick, and strong fibers
R: lateral CT blends with the external intercostals muscle
What ribs do not have a costotransverse ligament?
First rib, T11, T12
How do you test the costotransverse ligament?
to test: place thumb on spinous process of vertebrae and finger just lateral to the CT joint…the movement is posterior to anterior..spinous process should move toward the test side
What does the first rib articulate with anteriorly?
1st rib articulates with manubrium and clavicle with a capsule that encompasses all three bones
What are chondrosternal articulations?
costal cartilages join small concavities on the lateral sternal borders—chondrosternal articulations
Describe the different aspects of the sternum
Manubrium Jugular/suprasternal notch Sternal angle Body (T5-9) Fuse (by age 25) Xiphoid process (T10)
