Flashcards in Exam 1-Diarthrosis Classification Deck (20):
What is a simple synovial joint (diarthrosis)?
only one pair of articulating surfaces are observed
What is a compound synovial joint (diarthrosis)?
more than two articulating surfaces are present in the same synovial joint
What is a complex synovial joint (diarthrosis)?
within the simple joint or the compound joint, the articulating surfaces are seperated by an articular disc (intra-articular) or meniscus
What are the classifications of synovial joints (diarthoses) based on type of movemnt?
nonamxail, uniaxail, biaxial and multiaxial synovial joints
What movements are accomodated by nonaxial synovial joints?
translational movement, a plane or gliding movement
What morphological classification of synovial joints is classified as nonaxial?
plane (diarthrosis arthrodial)
What movements are accomodated by uniaxial joints?
a sinlge combination of movements relative to a single axis: flexion - extension or medial rotation - lateral rotation
What morphological classifications of synovial joints would be classified as uniaxial?
hinge (diarthrosis ginglymus) and pivot (diarthrosis trochoid)
Whatg movements are accomodated by biaxial synovial joints?
movementin two independent planes at right angles to each other: flexion - extension combined with abduction - adduction
What morphological classifications of synovial joints would be classified as biaxial?
(diarthrosis) bicondylar, (diarthrosis) condylar, (diarthrosis) ellipsoidal and saddle (diarthrosis sellar)
What morphological classifications of synovial joints would be classified as multiaxial?
ball and socket (diarthrosis enarthrosis), (diarthrosis spheroidal), (diarthrosis cotyloid) are all classifications given to the same type of joint
What are examples of synovial hinge (diarthrosis ginglymus) joints?
humero-ulnar joint of the elbow and interphalangeal joints of fingers and toes
Diarthrosis trochoid joints are commonly called _________ joints based on action
What are examples of synovial pivot (diarthrosis trochoid) joints?
median atlanto-axial joint and proximal radio-ulnar joint
What is the shared morphological characteristic of diarthrosis trochoid joints?
an osseous pivot point and an osteo-ligamentous ring
What are examples of diarthrosis condylar or diarthrosis bicondylar joints?
temperomandibular joint and femur-tibie joint of the knee
What are examples of diarthrosis ellipsoidal joints?
radiocarpal joint of the wrist, metacarpo-phalangeal joints of the hand, metatarsal-phalangeal joints of the foot and the atlanto-occipital joint of the vertebral column
Which synovial joint classifications are now often interchanged in textbooks?
ellipsoidal and condylar synovial joints
What are examples of synovial saddle (diarthrosis sellar) joints?
carpometacarpal joint of the thumb, talocrual joint of the ankle and the calcaneocuboidal joint of the foot