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What does the humeroulnar joint articulate with?
trochlea of humerus with the trochlear notch of the ulna
- diarthrodial, uniaxial, hinge, 0-145degrees ROM
- sagittal plane, frontal axis
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What does the humeroradial jt articulate with?
capitulum of humerus with the head of the radius
- diarthrodial, uniaxial, hinge, 0-145degrees ROM
- sagittal plane, frontal axis
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What does the proximal (superior) radioulnar jt articulate with?
- head of radius with the radioulnar notch of ulna
- uniaxial, pivot, pronation ROM 80, supination ROM 90
- transverse plane, vertical axis
- ulna does not move, its stationary
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What does the mid radioulnar jt articulate with?
- between radius and ulna
- transverse plane, vertical axis
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What does the distal radioulnar jt articulate with?
- head of ulna with ulnar notch of radius
- uniaxial, pivot
- transverse plane, vertical axis
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What is located at the top of the glenoid fossa?
- supraglenoid tubercle
- attachment for long head biceps
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What is located on the bottom of the glenoid fossa?
- infraglenoid tubercle
- attachment for long head triceps
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What is the attachment for the short head biceps?
coracoid
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The trochlea of the humerus articulates with what?
ulna
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The capitulum of the humerus articulates with what?
- head of radius
- makes the humeroradial jt
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The medial epicondyle of the humerus is the attachment for what m.?
- pronator teres
- above the trochlea
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The lateral epicondyle is the attachment for what mm.?
- anconeus and supinator
- above the capitulum
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What is the attachment for the brachioradialis?
- lateral supracondylar ridge
- above lateral epicondyle
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What does the olecranon fossa of the humerus articulate with?
olecranon process of the ulna
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What is the attachment on the ulna for the triceps?
olecranon process
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What does the trochlear (semilunar) notch of the ulna articulate with?
- trochlea of humerus
- makes humeroulnar jt
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Where is the coronoid process of the ulna located and what m. does it attach?
- below the trochlear notch
- attaches the brachialis
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What does the radial notch of the ulna articulate with?
- head of radius
- makes proximal radioulnar jt
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What m. does the ulnar tuberosity of the ulna attach?
brachialis
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What is the attachment for the biceps on the radius?
radial tuberosity
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Where is the attachment on the radius for the brachioradialis?
styloid process
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What is the ligament of the humeroulnar jt?
medial (ulnar) collateral- creates medial stability
- medial epicondyle to coronoid and olecranon processes of ulna
- triangular shaped
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What is the ligament of the humeroradial jt?
lateral (radial) collateral- provides lateral stability
- lateral epicondyle of humerus to annular ligament and lateral ulna
- triangular shaped
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What is the ligament of the proximal radioulnar jt?
annular ligament
encompasses radial head and holds it against the ulna
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What ligament keeps the radius and ulna together, and serves as a m. attachment (starts at mid radioulnar jt, ends at distal radioulnar jt)?
interosseus ligament (membrane)
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What are the radioulnar articulations held together by?
interossues membrane and annular ligament
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What m. prevents the annular ligament from getting pinched in the olecranon fossa, and stabilizes in pro/supination?
anconeus
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