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humerus
humerus comp
Question | Answer |
---|---|
TOF for a humerus projection | 1 ½” above the humeral head |
Positioning for an AP humerus | abduct and supinate the hand placing the epicondyles parallel to the IR |
Positioning for a lateral humerus | internally rotate and flex elbow 90 degrees, placing the epicondyles perpendicular to the IR |
What should be seen on an AP humerus radiograph? | elbow and shoulder joints, humeral head and greater tubercle in profile, outline of lesser tubercle, maximum visibility of epicondyles |
What should be seen on a lateral humerus radiograph? | elbow and shoulder joints, lesser tubercle in profile, greater tubercle over humeral head, superimposed epicondyles, elbow joint closed. |
Scapulohumeral joint type | ball and socket |
What forms the scapulohumeral joint? | the glenoid fossa and humeral head |
Acromioclavicular joint type | synovial gliding |
Proximal radioulnar joint type | pivot |
Humeroulnar joint type | hinge |
Humeroradial joint type | hinge |
What makes up the humeroulnar joint? | the trochlea of the humerus and trochlear notch of the ulna |
What makes up the humeroradial joint? | the capitulum of the humerus and the radial head |
Visualization of which fat pad indicates trauma? | posterior |
Joint effusion | accumulation of fluid in the joint |