Test 3 Lecture 11 Flashcards
(24 cards)
The condyle of the elbow is made up of?
Radial fossa
Coronoid fossa
Capitulum
Trochlea
Which is more lateral? Capitulum or trochlea?
Capitulum
Which is more medial? Capitulum or trochlea?
Trochlea
Which is more medial? The ulnar nerve or ulnar artery?
Ulnar nerve
What shape is the trochlea?
Spoil shaped
Which is longer the radius or ulna?
Ulna
Two projections of the ulna
Olecranon
Coronoid
These form the trochlear notch
What does the radius do during pronation and supination?
The radius rotates around the ulna
What is the function of the interosseous membrane?
Transmission of forces from the radius and hands to the ulna then humerus
The elbow joint capsule is weak where?
Anteriorly and posteriorly
- Strengthened on the sides by collateral ligaments
How many bands does the UCL have?
3
Anterior cord
Posterior fan
Oblique band
What is the strongest band of the UCL?
Anterior band
What is the weakest of the UCL bands?
Posterior band
What is the strongest flexor of the forearm?
Brachialis
What is the strongest supinator of the forearm?
Biceps brachii
What is the chief extensor of the forearm?
Triceps brachii
What nerves supply the elbow?
Musculocutaneous, radial, ulnar
What type of joint is the proximal radio-ulnar joint?
Pivot type synovial joint
Pronator muscles are typically innervated by what?
Median nerve
Supinator a are mainly innervated by what?
Musculocutaneous and radial nerves
What type of joint is the distal radio-ulnar joint?
Pivot type synovial joint
Blood supply of the distal radio-ulnar joint is?
Anterior and posterior interosseous arteries
Innervation of the radio-ulnar joint?
Anterior and posterior interosseous nerves
What type of joint is the elbow?
Hinge type synovial joint
