L12: Type of synovial joints Flashcards
how many types of synovial joints? what are they?
7:
- plane (gliding)
- spheroid (cotyloid)
- condylar
- ellipsoid
- trochoid
- sellar
- ginglymus (hinge)
describe a plane (gliding) joint?
sliding between 2 almost flat surfaces
example of plane joint?
សន្លាក់នៅចន្លោះឆ្អឹងកដៃ2
t: convexity?
ភាពប៉ោង
t: concavity?
ភាពផត
what are the other names for spheroid?
cotyloid & ball and socket joint
example of spheroid joint?
shoulder & hip joints
movement of spheroid joint?
free movement in all directions, including rotation
movement of condylar joint?
rotation & abduction-adduction
example of condylar joint?
a metacarpo-phalangeal or knuckle joint (រវាងឆ្អឹងបាតដៃ&ឆ្អឹងម្រាមដៃ)
តើ ellipsoid joint ស្រដៀងទៅនឹង joint មួយណា?
a condylar joint
movement of ellipsoid joint?
flexion, extension, abduction & adduction
example of ellipsoid joint?
radiocarpal joint
movement of trochoid joint?
rotation
example of trochoid joint?
the middle atlantoaxial joint (between the first 2 cervical vertebrae)
movement of sellar joint?
- allow flexion-extension less than ball & socket joint
- allow abduction-adduction then ball & socket joint
example of sellar joint?
between the trapezium(ឆ្អឹងកដៃផ្នែកមេដៃ), a carpal bone, and the metacarpal of the thumb
movement of ginglymus or hinge joint?
flexion & extension
example of ginglymus or hinge joint?
between the humerus(ឆ្អឹងកំភួនដៃ) and the ulna
at the elbow
what are the mobile joints?
- ball & socket joints
- hinge joints
- pivot joints
- ellipsoidal joints