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Finger Positioning

TermDefinition
How many Metacarpals are there on a single hand? 5 Metacarpals
What group of bones articulates with the heads of metacarpal bones? The Proximal Phalanges
Which kinds of movements do the interphalangeal joints allow Flexion and extension
How many Phalanx are on each hand (Including the thumb)? 2-5, 3 (Proximal, Middle, and Distal) Thumb, 2 (Proximal and Distal)
Where is the Proximal Interphalangeal joint located? Between the Proximal and middle phalanxes
Where is the Distal interphalangeal located? Between the Middle and Distal Phalanxes
Where is the Metacarpophalangeal joint located? Between the Metacarpal and Proximal phalanx
What are the three routine projections for the Finger series PA, Lateral, PA Oblique
Do we use an AP oblique or a PA oblique in the finger series? PA oblique
PA projection Collimation? patient positioning? IR placement? Central Ray? Shield 8 x 10 Seated at the end of the table. Lay palmar surface with extended fingers on IR Center IR to PIP joint Perpendicular to PIP joint Shield is required
To see if there is no rotation on the PA projection of the finger what would you look for? Concavity on the phalangeal shafts and equal amount of soft tissues on both sides of the phalanges
Why do we direct the CR at a right angle to the midpoint of the IR? To see the open joint spaces, Unless otherwise specified
Lateral Projection Collimation? Patient position? IR placement? Central Ray? Shield? 8 x 10 Seated at the end of the table. Extend finger, close the rest of the digits into fist. Center IR to PIP joint Perpendicular to PIP joint Shield is required.
For a Lateral projection of digits 2-3 what side would you place the hand flat on the IR? Radial Surface
For a Lateral projection of digits 4-5 what side would you place the hand flat on the IR Ulnar Surface
PA Oblique: How many ways? 2 ways
1 way Collimation? Patient position? IR placement? Central Ray? Shield? 8 x 10 1. Place patient's forearm on table, palmar surface and extended fingers on IR. Rotate hand externally 45 degrees, and separate digits. Perpendicular to PIP joint Shield is required.
2 way Collimation? Patient position? IR placement? Central Ray? Shield? 8 x 10 2. You can use a 45 degree angle foam wedge. IR should be centered to the PIP joint Perpendicular to PIP joint Shield is required.
What bone classification are the metacarpals? Long bones
Which bone classification are the carpal bones? Short bones
What group of bones articulates with the bases of metacarpal bones? Carpal bones
Which upper extremity joints are formed in part by the bases of the metacarpals? Carpometacarpal joint
What is another name for the radiocarpal joint? Articular disk
Created by: yt88
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