Forearm and Elbow Flashcards
When performing the AP forearm position, a line drawn through the humeral epicondyles should be –1– to the IR.
PARALLEL
The CR should be directed to the –1– when performing lateral forearm exam.
Mid-shaft of ante-brachium
The narrowed area just distal to the radial head is known as the –1–.
Radial neck
When performing the AP Oblique elbow with medial rotation, the radius and ulna will appear –1–.
crossed
What 3 body joints should be in the same plane when performing routine forearm and or elbow?
Shoulder, elbow, wrist
Another name for the semi-lunar notch is the –1–.
Trochlear notch
What process and fossa fit together when the arm is in extension?
Olecranon process will be within the Olecranon fossa.
Why is it important to include soft tissue when collimating for the lateral elbow exam?
For visualization of the posterior fat pads. Indicates injury of the elbow joint.
What hand action is performed when a AP projection of the elbow or forearm is performed?
Supinate hand
How many degrees of flexion are necessary for the lateral position/projection of the forearm and elbow?
90
How many degrees of rotation are necessary to oblique elbow exams?
45
Name 2 structures that must be superimposed on a lateral forearm radiograph.
1) distal radius and ulna
2) humeral epicondyles
What structure is demonstrated in profile when the AP elbow with medial rotation oblique is performed?
Coronoid process
The –1– is demonstrated in profile on a lateral elbow position.
Olecranon process
What humeral structure articulates with the radial head?
The capitulum of the humerus articulates with th the flattened head of the radius.
What humeral structure articulates with the ulna?
The Trochlea of the humerus articulates with the ulna at Trochlea notch.
Which bone of the forearm is the medial structure?
Ulna
When performing a forearm study, the collimation should be open to include from the elbow joint to the proximal row of carpals. Name the proximal row of carpals beginning on the lateral side.
Scaphoid or Navicular
Lunate or Semilunar
Triquetrum or Triangular
Pisiform or Is Pisiform
Which elbow joint will demonstrate the radial head and neck free of superposition?
AP Oblique with lateral rotation
How and where should the CR be directed when performing an elbow study?
Perpendicular and directed to the elbow joint
The radial tuberosity should be facing –1– when the lateral forearm or elbow study is performed.
Anteriorly
For most CR systems, the green tips should be placed at the –1– for a forearm study.
fingertips
For most CR systems, the green strips should be placed at the –1– for an elbow study.
Humerus
When performing an AP projection of the forearm/elbow, what might you need to have the patient do in order to obtain a “true” AP view?
Lean laterally to place forearm in a true supinated position
When performing a lateral forearm/elbow, what is the position of the hand?
Lateromedial
Another name for the Capitulum is the –1– or –2–,
1) Hippo
2) Lateral Condyle
Another name for the Trochlea is the –1–.
Medial Condyle
The Coronoid Fossa is on the –1– surface of the elbow and will be filled with a bony process when the arm is –2–.
1) Anterior
2) Flexed
