Ch 3 Flashcards
Classification of joints
synarthrosis
amphiarthrosis
diarthrosis
Synarthrosis joint
doesn’t move
fibrous CT
Amphiarthrosis joint
partly moveable
cartilage
Diarthrosis joint
fully moveable
synovial
Fibrous joints
(Synarthrosis)
Interosseous membrane
Gomphosis
Sutures
Cartilaginous Joints
(Amphisarthrosis)
synchondrosis - ribs
epiphyseal plates - growth plates
symphysis - pubic and intervertebral disks
Synovial Joints
(Diarthrosis)
joints you think of
what is joint capsule a continuation of?
periosteum
what is the synovial membrane for?
secrete synovial fluid
ligaments are just a thickened portion of what?
the fibrous capsule
what is just a thickened portion of the fibrous capsule?
ligaments
what are the 6 types of synovial articulations?
ball and socket hinge saddle pivot plane condyloid
Location and movement of joint:
ball and socket
shoulder, hip
all directions
Location and movement of joint:
hinge
knee and elbow
uniaxial
Location and movement of joint:
saddle
thumb
biaxial
Location and movement of joint:
pivot
C1-C2; wrist
twisting; pronation, supination
Location and movement of joint:
plane
foot, wrist
small amount of movement
Location and movement of joint:
condyloid
(shallow ball and socket)
wrist
flex, extend
What factors affect stability and ROM?
- bone shape
- ligaments and labrum
- muscle arrangement
- fascia and skin
- atmospheric pressure (slightly negative in joints)
sagital plane
separates left and right
frontal plane
separates anterior and posterior
transverse plane
separates top from bottom
movement at longitudinal axis
twisting
movement at bilateral axis
bending forward/back
movement at anteroposterior axis
bending left/right
