Movement Flashcards
(11 cards)
What are the two general type of motion
Translation
Rotation
Define translation and the two types of motions
When all parts of a body move in the same direction.
Rectilinear motion - like sliding a book across the table
Curvilinear motion - like the arc of throwing a ball.
When translation occurs within the body. There is sliding and gliding of a joint
Define rotation
Rotation or angular motion is an arc of movement of a body about and axis rotation
Arthrokinematics define
Movement of joint surface in relation to each other.
Combination of roll and glide is common
Convex and concave
Convex surface moving on concave.
The convex with roll one direction and glide the opposite
Concave on canvex
Concave will roll in one direction and glide in the same direction
Define the planes
Sagittal plane
Frontal (coronal) plane
Horizontal (transverse)
Sagittal runs down the middle of the body dividing it left and right
Frontal plane divides the body into anterior and posterior
Horizontal plane divides the body into superior and inferior
Axis of rotation
Anterior- posterior on the frontal
Medial - lateral on sagittal plane
Vertical/ longituinal - horizontal plane
Degrees/motions of freedom in the wrist
2 degrees
Flexion/extension
Abduction/adduction
Osteokinematics of the wrist
Flexion/extension occurs in sagittal plan, along the medial- lateral axis
85 flexion/ 75 extension
Adduction/abduction occurs in the frontal/coronal plane, along the anterior/posterior axis 40 adducts(ulnar deviates)/ 25 abducts (radial deviates)
Arthrokinematics of wrist flexion and extension
Occurs on convex on concave
Flexion: carpals roll palmery (anteriorly) and slides dorsally (posteriorly)
Extension: carpals roll dorsally (posteriorly) and slides palmery (anteriorly)
Classes of levers
1st
2nd
3rd
1st- load and effort are on opposite sides
2nd load is closer than the effort
3 effort is closer than the load
