Wrist & Forearm RAD 1 Positioning Flashcards
What is the SID used for Wrist & Forearm?
40”
What IR is used for Wrist positioning?
10 x 12
Where is the CR located for PA Wrist?
Perpendicular to Mid-carpal
What structures are seen in PA Wrist?
- PA projection of carpals, distal radius & ulna, and proximal metacarpals
- Open radioulnar joint space
- No rotation in carpals, metacarpals, or radius
- slight rotation of the ulna
Where is the CR located for 45 degree PA Lateral Oblique Wrist?
Perpendicular to midcarpal area, entering just distal to the radius
What structures are seen for a 45 degree PA Lateral Oblique Wrist?
- Trapezium is best demonstrated
- Distal half of scaphoid is seen
- Slight overlap of distal radius, ulna, and other carpals
- Open trapeziotrapezoid & scaphiotrapezial joint space
- Demonstrates carpals on the lateral side of wrist
Where is CR located for 45 degree PA Medial Oblique Wrist?
Perpendicular to midcarpal ares, entering just distal to the radius
What structures are seen for a 45 degree PA Medial Oblique Wrist?
- Demonstrates carpals on the medial side of the wrist
- Pisiform, lunate, and triquetrum is seen
Where is the CR located for a 45 degree AP Medial Oblique Wrist?
Perpendicular to midcarpal area, entering the anterior surface of the wrist
What structures are seen in a 45 degree AP Medial Oblique Wrist?
- Demonstrates carpals on the medial side of the wrist
- Pisiform is best demonstrated
- No superimposition of the triquetrum, hook of hamate, and pisiform
Where is the CR located for a Lateromedial wrist
Perpendicular to the wrist joint
What sturctures are seen in a Lateromedial wrist?
- Superimposed distal radius and ulna
- Superimposed metacarpals
- Demonstrates any anterior/posterior displacement due to a fx and localization of any foreign body
Where is the CR located for a PA wrist ulnar deviation?
Perpendicular to scaphoid
What structures are seen in a PA wrist ulnar deviation?
- Scaphoid best demonstrated with no superimposition
- No rotation of carpals, metacarpals, radius, or ulna
Where is the CR located for a PA Axial wrist projection for scaphoid?
20 degrees cephalic entering at the scaphoid