Name That Bone!
The carpal bone that articulates with the base of the first metacarpal.
What is the trapezium?
The routine projections for digits 2–5.
What are PA, oblique, and lateral?
On a correctly positioned AP thumb projection, this joint space should appear open, and the phalanges should not be foreshortened.
What is the interphalangeal joint space?
A fracture of the distal radius with posterior displacement of the distal fragment.
What is a Colles’ fracture?
The fan lateral projection of the hand is performed with the thumb in this position.
What is PA?
This crescent-shaped carpal articulates primarily with the radius.
What is the lunate?
For a PA hand, the CR is directed to what location.
What is the third MCP joint?
On a lateral forearm, these two structures should be superimposed.
What are the distal radius and ulna?
A fracture of the distal radius with anterior displacement.
What is a Smith’s fracture?
The projection performed when the patient cannot fully extend the elbow for an AP.
What is the AP partial flexion projection?
The only carpal with a hooklike process.
What is the hamate?
The degree of obliquity for an oblique hand or wrist.
What is 45 degrees?
The correct positioning of the elbow for a true lateral projection.
What is the elbow flexed 90° with the epicondyles perpendicular to the IR and shoulder, elbow and wrist on the same plane?
A transverse fracture through the base of the 5th metacarpal.
What is a Boxer’s fracture?
This bony prominence on the proximal radius serves as the attachment site for the biceps tendon and should be visible in profile on a true lateral elbow. Which anatomic structure is it, and how is the arm positioned to demonstrate it?
What is the radial tuberosity, visualized with the elbow and forearm in a true lateral position and the hand supinated in a thumbs-up?
The smallest carpal bone on the distal row.
What is the trapezoid?
When performing an AP forearm, the epicondyles of the humerus should be in this position relative to the IR.
What is parallel?
Proper exposure of the elbow should clearly demonstrate these two soft-tissue structures.
What are the fat pads and soft-tissue margins?
A sprain or tear of the ulnar collateral ligament of the thumb near the MCP joint of the hyperextended thumb.
What is Skier's thumb?
What CR degree and direction of angle are used to visualize the radial head free of superimposition for a trauma elbow? (Coyle)
What is 45 degrees toward the patient's shoulder?
The concave, anterior surface of the distal humerus that receives the coronoid process during flexion.
What is the coronoid fossa?
The projection that best demonstrates the radial head free of superimposition.
What is the external oblique elbow?
On a correctly positioned lateral elbow, these three structures should appear as nearly concentric circles.
What are the trochlear sulcus, capitulum, and trochlea?
This injury, often occurring in young children after a sudden pull on the arm, results in the radial head slipping out of the annular ligament.
What is nursemaid’s elbow (radial head subluxation)?
This projection is used to visualize the carpal canal.
What is the tangential (Gaynor-Hart) projection?