Anatomy: back - joints and ligaments Flashcards
SYNDESMOSES (FIBROUS JOINTS)
Label the following
What fibre type predominates in these?
Collagen fibres
- Interspinous ligament
SYNDESMOSES (FIBROUS JOINTS)
Anterior/posterior longitudinal ligaments
SYNDESMOSES (FIBROUS JOINTS)
Ligamentum flavum
- It runs between adjacent ___________ .
- It has a high composition of ____________ fibres.
- Why is it named the ligamentum flavum?
- What vertebral levels does it run between?
- What movement does it limit?
Laminae
Elastic fibres
It’s yellow-ish (due to elastic fibre content)
C2-S1
Limits flexion
SYNDESMOSES (FIBROUS JOINTS)
Nuchal ligament, supraspinous ligament, interspinous ligament
SYNDESMOSES (FIBROUS JOINTS)
Intertransverse ligaments
- Where do they run between?
Adjacent transverse processes
SYMPHYSES (SECONDARY CARTILAGINOUS JOINTS)
What is the symphyses within the spine?
Intervertebral discs
SYMPHYSES (SECONDARY CARTILAGINOUS JOINTS)
Intervertebral discs
- Label and describe their structure
The annulus fibrosis is tough, made of concentric fibrous rings
The nucleus puloposus is more deformable, a central elastic mass
SYNOVIAL JOINTS
Zygapophyseal/facet joints
- Articulation occurs between which structures?
- What kind of synovial joint is it? What kind of movement does it allow?
Planar joint - translation
SYNOVIAL JOINTS
Atlantooccipital joint
- Articulation occurs between which surfaces?
- What kind of joint is it? What kind of movement does it allow?
- Condylar joints -which act together to enable flexion and extension of the neck (nodding)
SYNOVIAL JOINTS
Atlantoaxial joint: pivot part
- What are the points of articulation?
- What ligament supports this?
- What movement does it allow?
Anterior arch of C1, dens of C2
Transverse ligament - joins the two lateral masses, holds the dens in place
Rotation of the neck (shaking of head)
SYNOVIAL JOINTS
Atlantoaxial joint: planar part
- What are the articulation points?
- What movement does it allow
2 lateral facets
Translation
SYNOVIAL JOINTS
Uncovertebral (Lushka’s) joints
- What vertebrae are involved?
- Articulation occurs between which structures?
LIGAMENTS ABOUT THE AXIS, ATLAS, AND OCCIPITAL BONE
Layer A (name I gave lol - most posterior)
- What ligament is at this layer?
- At C2, this ligament will deviate around the atlanxoaxial joint to from the _______________ membrane, which will attach where?
Posterior longitudinal ligament
Tectorial membrane
Anterior margin of the foramen magnum
LIGAMENTS ABOUT THE AXIS, ATLAS, AND OCCIPITAL BONE
Layer B
- What are the ligaments and their attachments?
- What are these ligaments called collectively?
Transverse ligament (of atlas): between lateral masses of C1
Superior longitudinal band: anterior margin of the foramen magnum –> transverse ligament
Inferior longitudinal band: transverse ligament –> body of C2
LIGAMENTS ABOUT THE AXIS, ATLAS, AND OCCIPITAL BONE
Layer C
- What are the ligaments and their attachments?
Apical ligament: tip of dens –> anterior margin of foramen magnum
Alar ligaments: tip of dens –> occipital condyles (laterally)