Joints of the Vertebral Column Flashcards
WEEK 4
What is a joint?
-
Synarthrosis
immovable joint
* sutures in the skull
Amphiarthrosis
slightly moveable joint
* pubic symphysis
Diarthrosis
freely moveable joint
* shoulder (all diarthrodial joints are synovial)
simple joint, how many bones?
2
compound joint, how many joints?
more than 2
Joint Classification (3)
-fibrous
-cartilaginous
-synovial joint (most common)
What is a joint articulation
sites where two or more bones
meet to give skeleton mobility
What stabilizing a synovial joint?
ligaments, tendons (muscles)
Tendons
connective tissue around muscles
What stabilizes a joint more?
muscle
Functional joint classification?
Synarthrosis
Amphiarthrosis
Diarthrosis
Structural joint classification?
Fibrous
Cartilaginous
Synovial
3 types of fibrous joints
– Sutures
– Syndesmoses
– Gomphoses
2 types of Cartilaginous joints
– Synchondroses
– Symphyses
Sutures
Syndesmoses
Gomphoses
Synchondroses
Symphyses
What are synovial joints separated by?
fluid filled cavity
they are all diarthrodial
Craniovertebral joints
(atlanto-occipital joint, atlanto-axial joint)
The joints of the vertebral column include the:
Craniovertebral joints (atlanto-occipital joint, atlanto-axial joint)
-Joints the of the vertebral bodies
-Joints of the vertebral arches
-Sacroiliac Joints
Occipital condyle
-unique bony structure connecting the cranium and the vertebral column
2 spoons that fit into each other
Atlanto-Occipital Joint
SYNOVIAL, CONDYLOID
Simple joint (synovial)
2 PARTS
-Cranial Base
-Atlas
SYNOVIAL, CONDYLOID
Atlanto-Occipital Joint: Movements
Flexion and Extension
Lateral flexion
NO ROTATION
Atlanto-Occipital Joint: Ligaments
-anterior alanto-occipital membrane
-posterior alanto-occipital (between atlas and occipital) membrane
-anterior longitudinal ligaments
-vertebral artery
-Ligamentum flavus
What ligament limit head flexion and increases extension?
Postier atlanto=occipital membrane
2 Atlanto-Occipital Joint: Ligaments related
-Anterior Longitudinal ligament
-ligamentum flavvum (posterior)
Transverse ligament of the Axis
on C1
prevents the odontoid process from being displaced backwards
Alar Ligaments
excessive axial rotation at the atlanto-occipital joint
Atlanto-Axial Joints: Movements
Pivot and little rotation
Atlanto-Axial Joints: Ligaments
Internal Craniocervical Ligaments
What ligament looks like a cross in the spinal cord?
Superior longitudinal band (part of cruciate ligament)
What are all the ligaments of the Atlanta-Axial Joints?
Internal Craniocervical Ligaments
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What results from whiplash injury
-severe hyperextension of the neck
-anterior longitudinal ligament
-compression fracture
of the vertebral arch
Atlanto-Axial Instability (AAI) is common in what patients?
patients
with
rheumatoid
arthritis and
Down
Syndrome