Wrist/Forearm RAD 1 Info Flashcards
How many carpal bones are in the wrist?
8
What are the carpal bones in the distal row of the wrist?
(Lateral to medial)
- Trapezium
- Trapezoid
- Capitate
- Hamate
What are the carpal bones in the proximal row of the wrist?
(Lateral to medial)
- Scaphoid
- Lunate
- Triquetrum
- Pisiform
What term can be synonymous with the scaphoid?
Navicular
What term can be synonymous with the lunate?
Semilunar
What term can be synonymous with the Triquetrum?
Triangular or cuneiform
What term can be synonymous with the Pisiform?
There is none
What term can be synonymous with the trapezium?
Greater multangular
What term can be synonymous with the trapezoid?
Lesser multangular
What term can be synonymous with the capitate?
Os magnum
What term can be synonymous with the hamate?
Unciform
What mnemonic can be used to help remember the carpal bones?
- Steve (Scaphoid)
- Left (Lunate)
- The (Triquetrum)
- Party (Pisiform)
- To (Trapezium)
- Take (Trapezoid)
- Carol (Capitate)
- Home (Hamate)
What is the largest carpal in the proximal row?
Scaphoid
What is the most commonly fractured carpal bone?
Scaphoid
What does the scaphoid contain on its anterior and lateral aspect?
Tubercle
Which carpal can be palpable near the base of the thumb?
Scaphoid
What does the lunate articulate with?
The radius proximally
What shape is the lunate?
Crescent
What does the triquetrum articulate with?
Anteriorly with hamate
What carpal bone is roughly pyramidal?
Triquetrum
Which carpal bone is easily palpable?
Pisiform
What is the pisiform anterior to?
Triquetrum
Which carpal bone is pea-shaped?
Pisiform
Which carpal bone is wedge-shaped?
Hamate
Where is the hook of hamate located?
On the anterior surface
What does the capitate articulate with?
The base of the 3rd metacarpal
What is the largest and most centeraly located carpal?
Capitate
The trapezoid has a smaller surface ______ than ______
- Anteriorly
- Posteriorly
What does the trapezium have on the anterior surface?
Tubercle & groove
What is an anatomic sunffbox?
A triangular depression located on the posterior surface of the wrist
When is the anatomic snuffbox visible?
When the thumb is abducted and extended
What is the anatomic snuffbox formed by?
The tendons of two major muscles of the thumb
What does the anatomic snuffbox overlie?
The scaphoid bone and radial artery
What does tenderness in the snuffbox area indicate?
A scaphoid fracture
What is the carpal sulcus formed by?
By the anterior (palmar) surface of the wrist side-to-side
What does the flexor retinaculum attach to medially?
The pisiform and hook of hamate
What does the flexor retinaculum attach to laterally?
The tubercles of the scaphoid and trapezium
What is the carpal tunnel?
The passageway created between the carpal sulcus and the flexor retinatulum
What nerve passes through the carpal canal?
Median nerve
What does carpal tunnel syndrome result from?
Compression of the median nerve inside the carpal tunnel
What wrist movement demonstrates the scaphoid?
Ulnar deviation
What wrist movement demonstrates the lunate, triquetrum, and hamate?
Radial deviation
How many bones does the forearm have?
2 (radius & ulna)
Where is the radius located on the forearm?
Lateral
Where is the ulna located on the forearm?
Medial
What does the proximal ulna contain? What are the names?
- Two beaklike processes and concave depressions
- Olecranon process & Coronoid process
What does the olecranon process form?
The proximal portion of the trochlear notch
Is the olecranon process proximal or distal?
Proximal
Is the coronoid process proximal or distal?
Distal
Which process is triangular in shape?
The coronoid process
What does the coronoid process form?
The distal portion of the trochlear notch
What is the radial notch?
A depression located on the lateral aspect of the coronoid process
