ch 11- elbow joint bony landmarks and muscles Flashcards
What bony landmark is circled?
coracoid process of scapula: projection on the anterior surface that provides attachment for the short head of biceps muscle
what bony landmark is highlighted in red?
infraglenoid tubercle: raised portion on the inferior lip of glenoid fossa that provides attachment of the long head of triceps
what bony landmark is marked in red?
supraglenoid tubercle: raised portion on the superior lip of glenoid fossa that provides attachment for the long head of biceps muscle
what bony landmark is marked?
spiral groove of humerus: groove that radial nerve runs through as it spirals around the midhumerus
what landmark is the arrow pointing to?
trochlea of humerus: located on the medial side of the distal end and articulate with the ulna
what bony landmark is the arrow pointing to?
capitulum of humerus: on lateral side and articulates with head of radius
what bony landmark is the arrow pointing to?
medial epicondyle: located on medial side of distal end above the trochlea and provides attachment for the pronator teres muscle
what bony landmark is marked in red?
lateral epicondyle of humerus: lateral on the lateral side of the distal end above the capitulum and provides attachment for the anconeus and supinator muscles
what bony landmark is the arrow pointing to?
lateral supracondylar ridge of humerus: located above the lateral epicondyle provides attachment for the brachioradialis muscle
what bony landmark is shown?
olecranon fossa of humerus: located on posterior surface between the medial and lateral epicondyles; articulates with the olecranon process of ulna
what bony landmark is shown?
olecranon process of ulna: located at the proximal end of ulna on the posterior surface; forms the prominent point of the elbow and provides attachment for the triceps muscle
what bony landmark is highlighted in blue?
trochlear notch of ulna: semilunar notch; articulates with trochlea of humerus and makes up the anterior surface at the proximal end
what is the bony landmark is marked in red?
radial notch: located at the proximal end on the lateral side just distal to the trochlear notch; articulation point for the head of the radius
what bony landmark is marked in green?
coronoid process of ulna: located just below the trochlear notch with the ulnar tuberosity provides attachment for brachialis muscle
what bony landmark is the arrow pointing to?
styloid process of ulna: at the distal end on the posterior medial surface
what is the bony landmark?
radial head: proximal end and has a cylindar shape with a depression in the superior surface where it articulates with the capitulum of the humerus
what bony landmark is identified?
styloid process of radius: located on the posterior lateral side of the radius at the distal end and provides attachment for the brachioradialis muscle
what is the bony landmark the arrow is pointing to?
radial tuberosity of radius: located on the medial side near the proximal end and provides attachment for the biceps muscle
what bony landmark is marked in blue?
ulnar tuberosity of ulna: located below the coronoid process and provides attachment for the brachialis muscle
what is the bony landmark marked in blue?
ulnar head: at the distal end on the lateral surface; the ulnar notch of the radius pivots around it during pronation and supination
what soft tissue structure is shown?
interosseous membrane: broad, flat membrane located between the radius and ulna to keep the two bones from separating and provides more surface area for muscle attachment
what soft tissue structure is shown?
annular ligament: attaches anteriorly and posteriorly to the radial notch fo ulna, encompassing the head of the radius and holding it against the ulna
what muscle is shown?
brachialis
what muscle is shown?
biceps brachii
what muscle is shown in green?
brachioradialis
what muscle is shown?
triceps
what muscle is shown in green?
anconeus
what muscle is shown?
pronator teres
what muscle is shown?
pronator quadratus
what muscle is shown?
supinator
