Clavicle/Scapula/AC joint RAD 1 Info Flashcards
The clavicle is classified as a __________
Long bone
The clavicle has a _______ & two ______
- Body
- Extremities
What are the two extremities of the clavicle?
- Acromial
- Sternal
What extremity of the clavicle is located on the lateral aspect?
Acromial extremity
What extremity of the clavicle is located on the medial aspect?
Sternal extermity
What does the acromial extremity articulate with?
The acromion process of the scapula
What does the sternal extremity articulate with?
The sternum and 1st costal cartilage
Where does the clavicle lie?
Above the 1st rib
What part of the shoulder girdle does the clavicle form?
Anterior
What is part of the clavicle from lateral to medial?
- Acromial extremity
- Body
- Sternal extremity
The clavicle is ____ curved for _____
- Doubly
- Strength
What does the clavicle serve as_______
a fulcrum for arm movements
What age does the clavicle ossify?
21-25 y/o
What does the fulcrum of the clavicle do?
Keeps the arm away from thorax allowing maximum range of motion
How many surfaces does the scapula have? What are their names?
- 2
- Anterior/Costal & Posterior/Dorsal
How many borders does the scapula have? and what are the names?
- 3
- Superior, Medial/Vertebral, & Lateral/Axillary
How many angles does the scapula have? What are the names?
- 3
- Superior, inferior, & lateral
What does the anterior/costal surface of the scapula contain?
The subscapular fossa
The anterior/costal surface of the scapula is slightly ______
Concave
The posterior/ dorsal surface of the scapula is divided into ____ portions of the _____
- 2
- Spinous process
Whats the area above the spinous process of the posterior/dorsal scapula called?
Supraspinous fossa
Whats the area below the spinous process of the posterior/dorsal scapula called?
Infraspinous process
Where does the superior border of the scapula extend from?
Superior angle to coracoid process
Where does the medial/vertebral border of the scapula extend from?
Superior to inferior angle
Where does the lateral/axillary border of the scapula extend from?
Glenoid cavity to inferior angle
What is the superior angle of the scapula the junction of?
Superior and medial borders
What is the inferior angle of the scapula the junction of?
Medial and lateral borders
Where does the lateral angle of the scapula end?
in the glenoid cavity
What angle is the thickest part of the scapular body?
Lateral angle
What is the scapula classified as?
A flat bone
What does the glenoid cavity articulate with?
The head of the humerus to form the shoulder joint
What is seen on the costal surface of the scapula?
- Lateral border
- Medial border
- Superior border
- Scapular body
- Subscapular fossa
- Superior angle
- Scapular neck
- Glenoid cavity
- Scapular notch
- Coracoid process
- Acromion
The glenoid cavity is a _____, ______ depression
- Shallow
- Oval
What is the scapular neck?
A constricted are around the glenoid caivty
Where does the coracoid process extend from?
The scapular notch to the superior portion of the scapular neck
The coracoid process can be palpated _________ to the AC joint
Distally and slightly medial
What is seen on the dorsal surface of the scapula?
- Medial border
- Lateral border
- Superior border
- Inferior angle
- Superior angle
- lateral angle
- Infraspinous foss
- supraspinous fossa
- crest of spine
- scapular notch
- coracoid process
- Acromion
- Glenoid cavity
- Scapular neck
What is seen on the lateral aspect of the scapula?
- Acromion
- Superior angle
- Inferior angle
- Spine
- Coracoid process
- Glenoid surface
- Costal/Anterior surface
- Dorsal/posterior surface
- Lateral border
What does the acromioclavicular joint articulate?
The acromion process of the scapula and the acromial (lateral) extremity of the clavicle
What is the Acromiclavicular joint classified as?
Synovial, gliding joint
What movement does the acromialclavicular joint permit?
Gliding and rotary movements
What is the acromioclavicular joint prone to?
Downward dislocation under the clavicle
