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Elbow Joint
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Supraglenoid Tubercle
raised portion ofn the superior lip of the glenoid fossa
Infraglenoid Tubercle
raised portion on the inferior lip of the glenoid fossa
Trochlea of the Humerus
medial side articulates with ulna
Capitulum of Humerus
lateral side next to trochlea articulates with radial head
Medial Epicondyle
medial side aboe the trochlea larger and more prominent than the later epicondyle
Lateral Epicondyle
Above the capitulum
Lateral supracondylar ridge
above the lateral epicondyle
olecranon fossa of the ulna
posterior surface between the medial and lateral epicondyles
trochlear = semilunar notch of the ulna
articulates with trochlea
Coronoid process of the ulna
just below the trochlear notch
Radial notch of the ulna
proimal end on laterside and just distal to trochlear notch artiulation with radial head
ulnar tuberosity
located below the coroniod process
styloid process of ulna
distal end posterior medial surface
Radial tuberssity
medial side near the proximal end
Styloid Preocess of the radius
posterior lateral side at the distal end
What makes up the elbow joint?
3 bones
humerus ulna and raduis
3 ligaments
2 joints
1 capsule
Movement at the elbow
Felxion 145
extension 0
active hyperextension blocked by the olecranon processof ulna fitting inot olecrannon fossa on humerus
Joints at the Elbow
Humeroulnar joint
humeroradial joint
superior radioulnar joint
inferior radioulnar joint
Humeroulanar and Humeroradial Joints
Uniaxial hinge joint
flexion and extension in the saggital plane
Radioular joint
considered one joint - uniaxial hinge joint
radius moves around ulna
Carrying Angle
longitudianl axes of the jumerus and forearm form and angle
men ~5 women ~10-15
What causes the carrying angle?
the angle occures becuase the distal end of the humerus is not level.
the trochlea on medal side is lower than the capitulum on the lateral side
as the ulna and radius rotate about the trochlea
Author
hgienau
ID
51032
Card Set
Elbow Joint
Description
elbow joint
Updated
2010-11-22T21:55:59Z
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