Anatomy - The upper extremity
18 important questions on Anatomy - The upper extremity
What are the three joints that make up the elbow joint?
2. Humeroradial joint (functions as a ball and socket joint)
3. Proximal radioulnar joint (functions as a pivot joint)
What are the movement capabilities of the elbow joint?
- pronation and supination (take place in the proximal radioulnar articulation and the humeroradial joint)
What is the normal degree of flexion in the elbow?
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What is the normal angle of extension in the elbow?
What is the normal degree of pronation and supination in the elbow?
What is the origin and insertion of the brachialis muscle?
Insertion: Ulnar tuberosity and coronoid process
What is the origin and insertion of the biceps brachii muscle?
Insertion: Radial tuberosity and antebrachial fascia (via the bicipital aponeurosis)
What is the origin and insertion of the brachioradialis muscle
Insertion: Directly proximal to the radial styloid process
Function: flexion of the elbow with the lower arm in midpoint position
What is the origin and insertion of the extensor carpi radialis longus and brevis muscles?
Insertion: Base of metacarpal bones II (long) and III (short)
Function: dorsal flexion and radial abduction of the wrist; flexion of the elbow
Disorder: tendonitis
What is the origin and insertion of the extensor digitorum muscle?
Insertion: proximal, medial and distal phalanx II through to V (spreading out into the dorsal aponeurosis of the fingers
Function: dorsal flexion of the wrist and extension of phalanges II through to V
Disorder: tendonitis
What is the origin and insertion of the triceps brachii muscle?
Insertion: Olecranon and ulna (via antebrachial fascia)
What is the origin and insertion of the flexor carpi radialis muscle?
Insertion: base of the metacarpal bones II and III
What is the origin and insertion of the flexor carpi ulnaris muscle?
Insertion: pisiform bone
Function: palmar flexion and ulnar abduction of the wrist;
Disorder: tendonitis
What is cubitus valgus?
Where is Hueter's line located?
When can Hueter's triangle be seen?
What is the function of the digitorum superficialis muscle?
Disorder: peritendonitis
Which bones does the elbow joint consist of?
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