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Kinesiology
Kinesiology Chapter 10 Elbow Joint
58
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Undergraduate 2
01/27/2011

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Term
elbow joint
Definition
the articulation of the humerus with the ulna and radius is commonly called this
Term
uniaxial
Definition
what type of joint is the elbow joint?
Term
flexion and extension
Definition
what type of motions does the elbow joint allow?
Term
radioulnar joint
Definition
the articulation between the radius and ulna
Term
pronation and supination
Definition
what types of motions does the radioulnar joint allow?
Term
carrying angle
Definition
the longitudinal axes of the humerus and forearm form an angle called this..
Term
infraglenoid tubercle
Definition
the raised portion on the inferior lip of the glenoid fossa providing attachment of the long head of the triceps muscle
Term
supraglenoid tubercle
Definition
raised portion on the superior lip of the glenoid ofssa providing attachment for the long head of the biceps muscle
Term
coracoid process
Definition
projection on the anterior surface, providing attachment for the short head of the biceps muscle
Term
trochlea
Definition
located on the medial side of the distal end; articulates with the ulna
Term
capitulum
Definition
on the lateral side next to the trochlea; articulates with the head of radius
Term
medial epicondyle
Definition
located on the medial side of the distal end above the trochlea; provides attachment for the pronator teres muscle
Term
lateral epicondyle
Definition
located on the later sides of the distal end above the capitulum; provides attachment for the anconeus and supinator muscles
Term
lateral supracondylar ridge
Definition
located above the lateral epicondyle; provides attachment for the brachioradialis muscle
Term
olecranon fossa
Definition
located on the posterior surface between the medial and lateral epicondyles; articulates with the olecranon process of the ulna
Term
olecranon process
Definition
located at the proximal end of the ulna, on posterior surface; forms the prominent point of the elbow and provides attachment for the triceps muscle
Term
trochlear notch
Definition
articulates with the trochlea of the humerus; makes up the anterior surface at the proximal end
Term
coronoid process
Definition
located just below the trochlear notch; with the ulnar tuberosity, provides attachment for the brachialis muscle
Term
raidal notch
Definition
located at the proximal end on the lateral side just distal to the trochlear notch; articulation point for the head of the radius
Term
ulnar tuberosity
Definition
located below the coronoid process; provides an attachment for the brachialis muscle
Term
styloid process
Definition
at the distal end on the posterior medial surface
Term
head
Definition
(ulna)at the distal end on the lateral surface; the ulnar notch of the radius pivots around it during pronation and supination
Term
head
Definition
(radius) proximal end; has a cylinder shape with a depression in the superior surface where it articulates with the capitulum of the humerus
Term
radial tuberosity
Definition
located on the medial side near the proximal end; provides attachment for the biceps muscle
Term
styloid process
Definition
(radius) located on the posterior lateral side of the radius at the distal end; provides attachment for the brachioradialis muscle
Term
medial and lateral collateral ligaments, annular ligament
Definition
what are the three ligaments of the elbow?
Term
medial collateral ligament
Definition
triangular shaped ligament that spans the medial side of the elbow; attaches on the medial epicondyle of the humerus and runs obliquely to the medial sides of the coronoid process and olecranon process
Term
lateral collateral ligament
Definition
triangular shaped ligament that attaches proximally on the lateral epicondyle of the humerus and distally on the annular ligament and lateral side of the ulna
Term
annular ligament
Definition
ligament that attaches anteriorly and posteriorly to the radial notch of the ulna, encompassing the head of the radius and holding it against the ulna
Term
joint capsule
Definition
attaches around the distal end of the humerus, encompassing the trochlea and capitulum and the fossa
Term
interosseous membrane
Definition
this holds the radioulnar articulations together
Term
lateral epicondylitis (tennis elbow)
Definition
a very common overuse condition of the common extensor tendon where it inserts into the lateral epicondyle of the humerus
Term
medial epicondylitis (golfers elbow)
Definition
an inflammation of the common flexor tendon that inserts into the medial epicondyle
Term
little league elbow
Definition
an overuse injury of the medial epicondyle usually cuased by a repetitive throwing motion
Term
pulled elbow (nursemaids elbow)
Definition
seen in young children under the age of 5 when there is a sudden strong traction force on the childs arm
Term
elbow dislocation
Definition
requires a great deal of force in a slightly flexed position; this cuases the ulna to slide posterior to the distal end of the humerus
Term
supracondylar fractures
Definition
one of the most common fractures in children and are cuased by a fall on the outstretched hand; dangerous because it can cause damage to the brachial artery
Term
volkmann's ischemic contracture
Definition
the result of ischemic necrosis of the forearm muscles caused by trauma to the brachial artery
Term
brachialis muscle
Definition
this muscle attaches to the distal half of the humerus on the anterior surface and spans the elbow joint anteriorly to the ulnar tuberosity of the ulna
Term
flexion
Definition
what motion is the brachialis muscle involved in?
Term
biceps brachii muscle
Definition
this muscle has 2 heads both of which are attached on the scapula
Term
supraglenoid tubercle
Definition
where does the long head of the biceps start?
Term
coracoid process
Definition
where does the short head arise from?
Term
anteriorly
Definition
after joining, the two heads of the biceps form a common muscle belly covering the _______ surface of the arm.
Term
elbow flexion and forearm supination
Definition
what motions is the biceps involved with?
Term
brachioradialis muscle
Definition
has two attachments: one on the humerus and one on the radius
Term
anteriorly; laterally
Definition
the bracioradialis cross the elbow _______ and _______ to attach distally near the styloid process of the radius.
Term
elbow flexion
Definition
what motion is the brachioradialis involved in?
Term
the triceps brachii muscle (triceps)
Definition
muscle with three heads; located posteriorly and makes up the entire muscle mass of the posterior arm
Term
long head
Definition
(triceps) comes from the inferior rim of the glenoid fossa of the scapula and descends between the teres major and minor to join the two other heads
Term
lateral head
Definition
(triceps) attached laterally on the posterior surface of the humerus below the greater tubercle
Term
medial head
Definition
(triceps) lies deep to the long and lateral heads and is attached below the lateral head to most of the posterior surface
Term
elbow extension
Definition
what motion is the triceps involved in?
Term
anconeus muscle
Definition
very small muscle that attaches next to the triceps; only assists in elbow extension
Term
pronator teres muscle
Definition
superficial muscle that crosses the elbow, but is covered by the brachioradialis muscle at its distal attachment
Term
forearm pronation, elbow flexion
Definition
what motions is the pronator teres muscle involved in?
Term
pronator quadratus muscle
Definition
small, flat quadrilateral muscle located deep on the anterior surface of the distal forearm; involved in pronation
Term
supinator muscle
Definition
deep muscle that wraps around the elbow joint laterally from the posterior surface to the anterior surface; involved in forearm supination
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