Types of movement at the Synovial Joints Flashcards
(38 cards)
What are the 4 main categories of movement at Synovial joints?
1: Gliding
2: Angular Movement
3: Rotation
4: Special movements which only occur at certain joints
What is The Gliding movement in joints in general?
This is where nearly flat bones move back and forth and from side to side with respect to each other.
What is angular movement in joints?
This is when there is an increase or decrease in the articulating bones.
What is angular movement in joints?
This is when there is an increase or decrease of the angle in the articulating bones.
What are the major types of Angular movements?
This includes:
Extension, Flexion.
Lateral flexion, hyperextension.
Adduction, Abduction, Circumlocution.
What are Flexion and Extension?
These are opposite movements:
When Flexion occurs there is a decrease in the angle between the articulating bones.
When Extension occurs there is an increase in the angle of articulating bones.
Why are Gliding movements limited in range?
Because the structure of the articular capsule and associated ligaments and bones.
What is the other type of movement that can be combined with gliding?
Rotational movements.
What plane of the body does Flexion and Extension occur in?
The Sagittal plane.
There are a few Exceptions of “Flexion of the Thumb”.
What is the movement along the Frontal plane involving the “Intervetebral joints”?
This movements is called “Lateral Flexion”.
What is Hyperextension?
This is the movement of the body beyond the anatomical position.
What is Circumduction?
Is the movement of the Distal end of a body part in a circle.
This is not an isolated movement but a sequence of:
Flexion, Abduction, Extension, Adduction, rotation of the joint.
Instead of the midline what is used for a point of reference for the adduction and abduction of the Digits?
An imaginary line drawn from the middle digit of the hand.
What is another name for Adduction?
Ulnar Deviation.
What is another name for Abduction?
Radial Deviation.
What is the point of reference for the movement of the thumb?
The Palm of the hand on the Sagittal plane.
How is Hyperextension usually prevented in hinge joints?
It is prevented from the Ligaments and the anatomical alignment of the bones.
What is an example of Hyperextension?
When the wrist goes backwards to shoot a basketball.
How is Hyperextension usually prevented in hinge joints?
It is prevented from the Ligaments and the anatomical alignment of the bones.
What is Rotation of a Joint?
This is when a bone revolves around its own Longitudinal axis.
What are some examples of Rotational Movements at joints?
This includes the rotating left to right at the Atlanto-Axial joint.
What is considered Medial Rotation (Internal)?
This is when the Anterior surface of the limb is turned toward the midline of the body.
What is considered lateral Rotation (External)?
If the Anterior surface of the limb is turned away from the midline.
What are the special movements of the joints?
All the special movements are: Elevation, Depression. Protraction, Retraction. Inversion, eversion. Dorsiflexion, Planter flexion. Supination, Pronation and Opposition.