Study Elbow Joint (PTA 102) Flash Cards

 
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Elbow Joint (PTA 102)

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What muscles are involved in extension?
TRICEPS
What muscles are involved in flexion?
-BICEPS
-BRACHIALIS
-BRACHIORADIALIS
What muscle is involved in neutral forearm?
BRACHIORADIALIS
What muscles are involved in forearm pronation?
-PRONATOR TERES
-PRONATOR QUATRATUS
What muscles are involved in forearm supination?
-SUPINATOR
-BICEPS
Open packed position for the radiohumeral joint?
FULL EXTENSION/FULL SUPINATION
Loosed packed postion for ulna humreal joint?
70 DEGREES ELBOW FLEXION/10 DEGREES FOREARM SUPINATION
What allows the radius to spin at the proximal radioulnar joint?
THE ANNULAR LIGAMENT
A pt injured her dorsal capsular ligament. What motion most likley contributed to this injury?
EXCESSIVE PRONATION
True/False

The dorsal capsular ligament is taut during pronation?
TRUE
True/False

The palmer capsular ligament is slack during pronation?
TRUE
For the proximal radius and ulna, which are convex and concave?
-RADIUS IS CONVEX
-ULNA IS CONCAVE
True/False

The distal radius has a convex surface and the distal ulna has a concave surface?
FALSE

DISTAL RADIUS IS CONCAVE
DISTAL ULNA IS CONVEX
What are the arthrokinematics of the proximal radioulnar joint?
SPIN
The radius moves around a _____________ ulna?
STATIONARY
During extension the anterior aspect of the elbow joint become
TAUT
During flexion the posterior aspect of the elbow joint becomes?
TAUT
Closed packed position for the elbow joint?
FULL EXTENSION
Allows for pronation and supination. Radius moves around a fixed ulna?
RADIOULNAR JOINT
ROM of elbow flexion?
0-150 DEGREES
What is hypertension of the elbow due to?
LAXITY IN THE LIGAMENTS (NOT THE JOINT)
How is extension of the elbow blocked?
THE OLECRANON PROCESS OF THE ULNA FITS INTO THE OLECRANON FOSSA
What prevents the elbow from hyperextending?
OLECRANON FOSSA
What kind of joint is the elbow and what kind of motion does it allow?
UNIAXIAL HINGE JT/ALLOWS FOR FLEXION AND EXTENSION
What does the trochlea of the humerus articulate with?
THE TROCHLEAR NOTCH OF THE ULNA AND THE HEAD OF THE RADIUS
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