Joints

Front 1

Continuous (synarthroses)

Back 1

depending on type of tissue can be (syndosmoses) connective tissue such as fibrous tissue
or (synchondorsis) cartilage

-2 bones with tissue btw 2
-no flexion or extension
-pretty immobile (for ex. Sutures of skull have some mobility when you’re young but it’s not good-syndosmoses)
Ex: gomphosis-when dentist takes out teeth (syndosmoses)

Front 2

Discontinuous aka synovial joints (diarthrosis)

Back 2

-btw 2 bones with nothing in btw them but 2 membranes (1 external and one internal)
-surface covered by hyaline or fibrocartilage
-synovial fluid is produced by synovial membrane, released into joint and secreting onto joint’s surfaces and onto hyaline cartilage

Front 3

hinge joints

Back 3

monaxial 1 degree of freedom, movements are flexion and extension

ex: ankle joint

interphalangeal joints-have restricted movements

Front 4

pivot joints

Back 4

monoaxial, one df

supination, pronation

Front 5

plane joints

Back 5

btw 2 flat art. surfaces
gliding movements
ex: zygapoyseal joints btw vertebrae, acromioclavicular joint

Front 6

elliposidal joints

Back 6

multiaxial, 2 df

radiocarpal joint (wrist joint)

flex, extend, abduct, adduct, circumduction

Front 7

saddle joints

Back 7

multiaxial, 2 df

carpometacarpal joint in thumb

flex, extend, abduct, adduct, and circumduct

Front 8

ball and socket

Back 8

multiaxial, 3 df

hip joint
shoulder joints, sternoclavicular joints

flex, extend, abduct, adduct, medial and lateral rotation, circumduction