Osteology: Radius and Ulna Flashcards
Lateral bone of the forearm
Radius
2 Structural components of the radius
- Thickens distally
2. Slightly convex laterally
Where is the head and neck of the radius?
The proximal end of the radius
What attaches at the radial tuberosity?
1 of the biceps brachii attachments
What kind of joint is the radius to the ulna?
Fibrous, syndesmosis
known from the interosseous border
The most proximal indentation on the radius
Fovea
The most distal projection on the radius
Styloid Process
What two structures can you see in pronation on the radius?
- Dorsal Tubercle
2. Ulnar Notch
A.k.a for Dorsal Tubercle
Lister’s Tubercle
Describe the ulnar notch
Indentation on the radius for the ulna to articulate with. (Distal radius)
Medial bone in the forearm
Ulna
What is the ulna latin for?
The elbow
Where is the olecranon?
Proximal ulna, articulates with the olecranon fossa of the humerus
Describe the trochlear notch
“Spool-shaped”
On ulna, articulates with the trochlea of the humerus
Describe the coronoid process
“Crown-shaped”
On ulna, articulates fits into coronoid fossa of the humerus
Describe the radial notch
Indentation on the ulna for the radius to articulate with. (Proximal ulna)
What attaches at the ulnar tuberosity?
Brachialis
Most distal projection on the ulna
Styloid process
Where is the head of the ulna?
Distal end of the ulna
How is the radial tuberosity and ulnar tuberosity in relation to each other?
Relatively adjacent at proximal aspect of the bones
How are the two styloid processes in relation to each other?
- Both at the distal end of the bone
- Radial longer than ulnar
Where are the heads in relation to each other?
Different ends
