Ch 4 elbow rough review (S1) Flashcards
Exam Review
How many interphalangeal spaces are there in each digit?
2-5 digits have 2 spaces:
Distal interphalangeal (DIP)
Proximal interphalangeal (PIP)
Thumb has one: Interphalangeal (IP)
When it comes to digits what side goes on the IR?
1st digit- lateral
2nd digit-lateral
3rd digit- either lateral or medial
4th digit- medial
5th digit- medial
Why? these sides have the least amount of OID.
What are the CR for these digits projections?
PA digit:
Roberts view (AP):
Lateral digit:
Oblique:
PA digit: PIP joint
Oblique: PIP joint
Lateral: PIP joint
Roberts: 15 degrees toward wrist at first CMC joint
What are the CR for these wrist projections?
PA wrist:
Oblique wrist:
Lateral Wrist:
Scaphoid Wrist:
PA Wrist: Midcarpal
Oblique Wrist: Midcarpal
Lateral Wrist: Midcarpal
Scaphoid Wrist: Angle tube 15 degrees and CR at scaphoid
What are the CR for these hand projections?
PA hand:
Oblique Hand:
Fan Lateral Hand:
Lateral hand:
AP oblique bilateral (ball catcher)
PA Hand: third MCP joint
Oblique hand: Third MCP joint
Fan Lateral: Second MCP joint
Lateral Hand: 2nd to fifth MCP joints
AP bilateral: level of the fifth MCP joints
What are the CR for these forearm projections?
AP forearm:
Lateral Forearm:
AP forearm: mid-forearm
Lateral Forearm:
Mid-forearm
What are the CR for these elbow projections?
AP elbow:
Internal elbow:
External elbow:
Lateral elbow:
AP elbow: mid elbow joint
INT elbow: mid elbow joint
Ext elbow: mid elbow joint
Lateral elbow: mid elbow joint
(t/f) we want the joints to be parallel to the image receptor at all times?
true
What articulation do the trochlear and trochlear notch form?
A. Distal radial ulna
B. Proximal radial ulna
C. Humeral ulna
D. Humeral Radial
C. Humeral Ulna
Why? Because the trochlear is on: humerus
and the trochlear notch is on:
Ulna
What is the difference between the olecranon and the coronoid?
The coracoid is not a viable answer because that pertains to the shoulder.
Answer is:
Coronoid is anterior in AP view
Olecranon is posterior in AP view
When the elbow is in the lateral position the process of the ulna which inserts into the fossa that’s on the distal anterior aspect of the humerus is:
coronoid process
When the elbow is in the lateral position the process of the ulna which inserts into the fossa that’s on the distal posterior aspect of the humerus is:
Olecranon process
What type of joint is the elbow?
Ginglymus (hinge) joint
What type of joints are the metacarpophalangeal joints?
second to fifth MCP are ellipsoidal (condyloid) joints
allow movement in 4 ways:
flexion, extension, abduction, and adduction
First MCP (thumb) is ellipsoidal joint with limited adduction and abduction movement
What type of joints are the interphalangeal joints?
All IP joints are ginglymus (hinge-type) joints
What type of joints are the first carpometacarpal joints?
the first CMC joint of the thumb is a saddle (Sellar) joint
What type of joints are the 2nd-5th carpometacarpal joints?
2nd-5th are plane (gliding) type joints
What type of joints are the radiocarpal (wrist) joints?
ellipsoidal (condyloid) joints
What type of joint is the distal radioulnar joint?
Pivot (trochoidal)
What type of joint is the proximal radioulnar joint?
Pivot (trochoidal) joint
What type of joints are the humeroulnar and humeroradial joints?
ginglymus (hinge) joints
The epicondyles should be parallel/perpendicular for:
AP elbow:
INT elbow:
EXT elbow:
Lateral Elbow:
AP elbow: parallel to IR (humeral epicondyles)
Internal: oblique
External: parallel
Lateral: perpendicular
What would substitute for an AP elbow if patient can’t fully extend?
2 projections
1- forearm up against IR
2- Humerus up against the IR
What would use to substitute for INT/EXT elbow obliques?
Coyle view
What does ICER stand for/ show?
IC-Internal elbow shows coronoid process
ER- External elbow shows radial head
What does external elbow oblique best show?
radial head and neck of the radius
& the capitulum of the humerus
“Cap on the head”
What does internal elbow oblique best show?
Coronoid process of the ulna
& trochlea in profile
What view shows fat pads?
Lateral elbow
What view shows the olecranon process free of superimposition?
lateral elbow
What view would best show the capitulum?
external elbow
Why? bc the “cap” sits on the radial head.
Trochlear notch is on the:
Ulna
And articulates with the trochlea on the humerus
Ulna notch is on the:
Radius
radial notch is on the:
Ulna
evaluation criteria PA fingers:
Anatomy demonstrated:
Position:
Exposure:
A: Distal, middle, and proximal phalanges & distal metacarpal & associated joints
P: long axis of finger should be aligned and parallel to side border of IR
E: no motion no rotation
CR at PIP joint
evaluation criteria oblique fingers:
Anatomy demonstrated:
Position:
Exposure:
A: OBLIQUE VIEW OF Distal, middle, and proximal phalanges & distal metacarpal & associated joints
P: IP and MCP spaces should be open, aligned to the side border of IR
E: No motion/no rotation
evaluation criteria mediolateral/ lateromedial (lateral) fingers:
Anatomy demonstrated:
Position:
Exposure:
A: lateral views of distal, middle, proximal phalanges & distal metacarpal
P: finger should be in a true lateral position
E: no motion/ rotation
CR PIP
evaluation criteria thumb:
Anatomy demonstrated:
Position:
Exposure:
A: distal and proximal phalanges, first metacarpal, trapezium visible
P: finger in a true lateral position
E: no motion/ no rotation
demonstrate soft tissue margins/ clear sharp bony trabecular
evaluation criteria PA thumb:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria lateral thumb:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria AP axial (Roberts):
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria PA hand:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria oblique hand:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria Fan Lateral hand:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria AP oblique Bilateral hand:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria AP wrist:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria PA oblique wrist:
Anatomy demonstrated:
Position:
Exposure:
(lateral wrist rotation)
evaluation criteria lateral wrist:
Anatomy demonstrated:
Position:
Exposure:
(lateromedial rotation)
evaluation criteria Scaphoid view:
Anatomy demonstrated:
Position:
Exposure:
(ulnar deviation)
evaluation criteria PA scaphoid hand elevated:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria AP wrist radial deviation:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria Carpal canal (tunnel) tangential inferosuperior projection wrist:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria carpal bridge-tangential projection:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria AP forearm:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria Lateral Forearm:
Anatomy demonstrated:
Position:
Exposure:
(Lateromedial projection)
evaluation criteria AP elbow:
Anatomy demonstrated:
Position:
Exposure:
evaluation criteria AP partial elbow flexion:
Anatomy demonstrated:
Position:
Exposure:
when elbow cannot be fully extended
A: humerus parallel projection shows distal humerus
forearm parallel shows proximal radius and ulna
P: two AP projections forearm/humerus parallel
E: no motion no rotation
evaluation criteria external elbow:
Anatomy demonstrated:
Position:
Exposure:
A: Best shows radial head and neck of radius and capitulum of the humerus, tuberosity free of superimposition
P: 45 degrees lateral oblique
E: no motion no rotation