Osteokinematics
Osteokinematics look at forces in relation to...
Bone
Arthrokinematics looks at forces in relation to...
Joints
What type of joint does the convex/concave rule pertain to?
Ovoid Joint Design
Open packed joints are a good position for mobility or stability?
Mobility
Closed packed joints are a good position for stability or mobility?
Stability
What is the definition of osteokinematics?
Gross movements of bones at joints
What is the definition of arthrokinematics?
Small motions of bones at joint surfaces
A roll is always moving in which direction with the bone segment?
The same direction
Support structures of open packed are...
Support structures of closed packed are...
Taught/Tight
How many planes of movement do osteokinematics take place in?
One
What are the different arthrokinematic movements?
Roll, spin, and slide
Convex moving on concave slides in what direction?
Opposite Direction
What motions do open packed positions allow for?
Spin, roll, and slide
The close packed position of the elbow joint is in...
Extension
What are the two types of motion for osteokinematic movements?
Translatory and rotary
What are the humeroulnar arthrokinematics for flexion?
The ulnar trochlear notch rolls and slides anteriorly over humeral trochlear groove
During flexion and extension of the humeroulnar joint, how does ulna move?
Concave moves on Convex
What is the open packed position of the humeroulnar joint?
70 degree of flexion and 10 degree of supination
What is the closed packed position of the humeroradial joint?
90 degrees of flexion and 5 degrees of supination
What are the different osteokinematic motion descriptors?
Flexion/extension, abduction/adduction, and internal/external rotation
What are the humeroulnar arthrokinematics for extension?
Trochlear notch rolls and slides posteriorly over humeral trochlear groove
Describe the convex/concave relationship between the radial head and capitulum during extension.
Concave radial head rolls and posteriorly slides on convex capitulum
What is the open pack position for the proximal radioulnar joint?
70 degree flexion, 35 degree supination
What is the close packvposition of the proximal radioulnar joint?
Full supination or full pronation