exam review
What is the location of the Radial styloid process?
on the distal end of the radius.
This is a broad, flattened and has a conic projection on its lateral surface.
What is the KVP range for wrist radiography?
66-70 KVP
How many phalanges are in the hand?
14 Phalanges.
What bones are best demonstrated on a PA oblique projection of the wrist?
The carpal bones on the lateral side of the wrist, particularly the trapezium and the scaphoid bones.
how would correct an image that is under exposed and over exposed?
Under exposed: increase the mAs
Over exposed: decrease the KVP
What is the location of the Ulnar styloid process?
On the distal end of the ulna, on the posteromedial side.
This is a narrow, conic projection.
What is the KVP range for Forearm radiography?
70 KVP
How many bones are in the forearm?
2 bones, radius and ulna
How many phalanges are in the 1st digit (thumb)?
2 phalanges, proximal and distal.
Define diarthrodial joint.
the site of junction or union of two or more bones of the body.
prides motion and flexibility.
Why would we do a PA axial Stecher method projection of the wrist? what is best demonstrated?
Because the 20 degree angulation of the wrist places the scaphoid at right angles to the CR, so that it is projected with minimal superimposition.
Where is the olecranon fossa located?
this is a deep depression found immediately behind the coronoid fossa on the posterior surface of the humerus. This accommodates the olecranon process when the elbow is flexed
What is supination?
movement that turns the palm to face upward. in this position the radius and ulna are parallel.
How are the epicondyles in relation to the IR for an AP projection of the forearm?
The Humeral epicondyles should be equidistant from the IR.
What is the central ray location for a projection of the forearm AP/lateral?
Perpendicular, mid forearm.
What is the KVP range for radiography of the digits?
63 KVP
How many bones are in the hand?
27 bones
What is pronation?
Turning the palms downward (palm down on the IR)
In this position the radius crosses over the ulna.
How are the epicondyles in relation to the IR for a Lateral projection of the forearm?
Superimposed and perpendicular to the image receptor.
Where is the capitulum located?
distal end of humerus, on the lateral portion of the anterior surface.
What is the KVP range for hand radiography?
66-70 KVP.
How many bones are in the wrist?
8 carpal bones, arraigned in a horizontal row.
Although a PA oblique projection of the wrist is more common, an AP oblique projection of the wrist is sometimes used to best demonstrate what?
The pisiform bone.
What are the functions of the bones (hand,wrist,forearm)?
1. support
2. organ protection
3. movement
4.shock absorption
5. attachment sites for muscles and ligaments
6. RBC, WBC blood cell production
7. stores calcium.
What does the capitulum articulate with?
The radial head.