what does the form of the bone depend on
the function and movement at the joint
what is the function of a joint
they enable motility and provide stability
what are the three types of joint
fibrous, cartilaginous and synovial
which type of joint is the most stable
fibrous
what are fibrous joints composed of
DFCT which forms ligaments
what is the function of fibrous joints
to provide stability and resist tension
where are fibres joints found
in the skull, in the teeth, holding together the radius and ulna
wha are cartilaginous joints composed of
fibrocartilage
what is the function of cartilaginous joints
to allow some movement and to resist compression and tension
where are cartilaginous joints found
in the intervertebral discs, the pubic symphysis and the costocartilage
what is the function of synovial joints
allow free movement
what are synovial joints composed of
they can be made of DFCT, articular cartilage and occasionally fibrocartilage
which structure of a synovial joint can thicken to form ligaments
the joint caps
what is a bursa
a small fluid filled sac that can be near bony prominences in joints
what is the function of ligaments
to connect bone to bone and to resist movement - movement is restricted away from itself
what do lateral and medial ligaments resist
adduction and abduction respectively
what is bony congruence
the sum of bone surfaces that form an articulation
what plane to flexion and extension occur in
the sagittal plane
what is flexion
a movement that decreases the angle between the body and the limb
what is extension
an movement that increases the angle between the body and the limb
what plane do abduction and adduction occur in
the coronal plane
what type of movement is spreading the fingers apart
abduction
what is circumduction
a combination of flexion, abduction, extension and adduction - not rotation
what is inversion
when the sole of the foot faces the midline
