Wrist Ligaments (2) Flashcards
What are the main complexes of the wrist?
Triangular fibrocartilage complex
Scaphoid-lunate-triquetrum complex
What is the mechanism of injury for the triangular fibrocartilage complex?
Acute Foosh
Repetitive ulnar deviation
What are the tests done for the triangular fibrocartilage complex?
+ palpation on ulnar side of wrist
Press up test
What is a dissociative injury in the wrist?
Involves one row of carpals
What is a non dissociative injury in the wrist?
Involves more than one row of carpals
How does the scaphoid-lunate-triquetrum complex work?
Scaphoid likes to flex
Triquetrum likes to extend
Lunate has connections with both
What happens in the scaphoid-lunate-triquetrum complex if there is an injury to the triquetrum?
Lunate goes with scaphoid in a flexed position
What happens in the scaphoid-lunate-triquetrum complex if there is an injury to the scaphoid?
Lunate goes with the triquetrum in an extended position
What mechanism of injury leads to a scaphoid-lunate injury?
Ulnar deviation
What is the test for the scaphoid-lunate injury?
Watson
What is the mechanism of injury for the lunate-triquetrum?
Radial deviation
What is the test for the lunate-triquetrum injury?
Shuck
