[ yōō′nē-ăk′sē-əl ] n.
A joint that permits movement around one axis only
.
Are planar joints uniaxial?
Synovial joints are classified further by the number of axes in which the bones involved can move (uniaxial, biaxial, or multiaxial) and by the shapes of the articulating surfaces (planar, ginglymoid [hinged], pivot, condyloid, saddle, and ball-and-socket).
Is a Plane joint uniaxial?
A uniaxial joint
only allows for a motion in a single plane
(around a single axis). The elbow joint, which only allows for bending or straightening, is an example of a uniaxial joint. A biaxial joint allows for motions within two planes.
What type of joint is plane?
Plane joints, also known as gliding joints, are a
type of synovial joint
between flat or near-flat articular surfaces.
Is planar joint biaxial?
Biaxial Joints
Flexion and extension are allowed within the sagittal plane
around a mediolateral axis, and abduction and adduction are allowed within the frontal plane around an anteroposterior axis. The metacarpophalangeal joint of the hand is an example of a condyloid joint (Figure 2-6).
Is the knee a uniaxial joint?
Hinge joints
, such as at the elbow, knee, ankle, or interphalangeal joints between phalanx bones of the fingers and toes, allow only for bending and straightening of the joint. Pivot and hinge joints are functionally classified as uniaxial joints.
Is the knee a Synarthrodial joint?
knee joint the
compound joint between the femur, patella, and tibia
. pivot joint a synovial joint in which one bone pivots within a bony or an osseoligamentous ring, allowing only rotary movement; an example is the joint between the first and second cervical vertebrae (the atlas and axis).
What are the 4 classifications of joints?
- Histologically, on the dominant type of connective tissue. ie fibrous, cartilaginous, and synovial.
- Functionally, based on the amount of movement permitted. ie synarthrosis (immovable), amphiarthrosis (slightly moveable), and diarthrosis (freely moveable).
What is another name for a uniaxial joint?
The most common type of joint is the diarthrosis, which is a freely moveable joint. All synovial joints are functionally classified as diarthroses. A uniaxial diarthrosis, such as the
elbow
, is a joint that only allows for movement within a single anatomical plane.
Is joint a bone?
Joints are
where two bones meet
. They make the skeleton flexible — without them, movement would be impossible. Joints allow our bodies to move in many ways.
Is wrist a gliding joint?
The movement i.e. gliding joint movement that occurs between gliding joints is limited by the ligaments that hold the bones together. The primary places in the human body that you will find gliding joints are in the ankles, wrist, and spine.
How does a plane joint move?
Because the articular surfaces of the bones are free and
move in a sliding motion
, the plane joint is classified as a type of synovial joint. In a plane joint the mating surfaces of the bones are slightly curved and may be either ovoid or sellar. Only a small amount of gliding movement is found.
What is the difference between pivot joint and gliding joint?
Gliding joint: These joints occur where the surface of one bone slide over the another one. … Pivot joint: These joints occur where a bony ring rotates around the pivot axis or where the end of one bone rotates around the axis of another bone. For example: palm of the hand.
Is hip or knee joint more stable?
All hinge joints also contain muscles, ligaments, and other tissues that stabilize the joint. Hinge joints are
more stable than ball-and-socket joints
, which include the shoulder and hip joints. However, ball-and-socket joints allow a greater range of movement along more than one plane.
Is the tibiofemoral joint biaxial?
The knee joint, also known as the tibiofemoral joint, is a synovial joint. More specifically, it is a
biaxial, modified hinge joint
.
Is saddle joint multiaxial?
The movements of saddle joints are similar to those of the condyloid joint and include flexion, extension, adduction, abduction, and circumduction. However, axial rotation is not allowed. Saddle joints are said to be
biaxial
, allowing movement in the sagittal and frontal planes.
