Shoulder Girdle and Ribs Flashcards
Which end (medial or lateral) of the clavicle articulates with part of the scapula?
Lateral (acromial)
Which end (medial or lateral) of the clavicle articulates with the manubrium?
Medial (sternal)
At what level is the clavicle (with reference to the ribs)?
Lies just above the first rib
Which classification of joint are sternoclavicular (SC) joints and acromioclavicular (AC) joints?
Synovial
Which type of joint are SC and AC joints?
Gliding
Which gender of adults (males or females) has more sharply curved clavicles?
Males
Anterior aspect of scapula
Costal surface
Deep depression on superior border of the scapula
Scapular notch
Large protrusion on dorsal surface of the scapula, separates the two fossae on the posterior surface of the scapula
Spine
Lateral extension of scapular spine of the scapula, articulates with the lateral end of the clavicle (thickened)
Acromion
Extends from the superior angle to the inferior angle of the scapula
Medial border
Large fossa at lateral angle of the scapula
Cavity for humeral head (articulates)
Glenoid cavity
The junction of the medial and lateral borders of the scapula, most distal
Inferior angle
The junction of the medial and superior borders of the scapula
Superior angle
Extends from the glenoid cavity to the inferior angle of the scapula
Lateral angle
Extends from superior angle to coracoid process of the scapula (top scapular border)
Superior border
Slender, fingerlike projection extending anteriorly and laterally from near the lateral angle of the scapula (superior)
Coracoid process
Large depression on the costal surface of the scapula (anterior)
Subscapular fossa
Area above the scapular spine on dorsal surface of the scapula (posterior-superior scapular fossa)
Supraspinous fossa
Large, broad area below the spine on dorsal surface of the scapula (posterior-inferior scapular fossa)
Infraspinous fossa
Large, rounded eminence of the humerus that articulates with the glenoid cavity
Head
Constriction of the shaft of the humerus inferior to the tubercles
Surgical neck
Narrow constriction of the humerus superior to the tubercles
Anatomic neck
Bony process of the humerus on the anterior surface of the shaft, inferior from the anatomic neck
Lesser tubercle
Bony process of the humerus on the lateral surface of the bone
Greater tubercle
Deep depression on the humerus that separates the two tubercles
Intertubercular (bicipital) groove
Posterior shoulder girdle bone
Scapula
Bone that articulates with scapula (glenoid cavity)
Humerus
Scapular spine ridge
Crest
Bone classification for humerus
Long
Bone classification for scapula
Flat
Anterior part of the shoulder girdle
Clavicle
Scapular border
Lateral
Lateral end of clavicle
Acromial
Medial end of the clavicle
Sternal
2 fossae located on the posterior surface of the scapula
Supraspinous
Infraspinous
3 scapular borders
Lateral
Medial
Superior
3 scapular angles
Superior
Inferior
Lateral
3 shoulder girdle articulations
Scapulohumeral
Acromioclavicular
Sternoclavicular
Which type of joint is the scapulohumeral joint?
Ball and socket
Which bone articulates with the medial end of the clavicle?
Sternum
What positioning maneuver should be avoided if the patient possibly has a fractured humerus or dislocation of the scapulohumeral joint?
Recumbent
What should the patient’s respiration be for AP projections of the shoulder?
Suspended
Which image of the AP shoulder is obtained by positioning the humeral epicondyles parallel to the IR?
External rotation
Which image of the AP shoulder is obtained by positioning the humeral epicondyles at an angle of approximately 45 degrees the IR?
Neutral rotation
Which image of the AP shoulder is obtained by positioning the humeral epicondyles perpendicular to the IR?
Internal rotation
Which image of the AP shoulder shows the greater tubercle in profile on the lateral aspect of the humerus?
External rotation
Which image of the AP shoulder shows the lesser tubercle in profile pointing medially?
Internal rotation
Which image of the AP shoulder shows the outline of the lesser tubercle between the humeral head and the greater tubercle?
Neutral rotation
What will a properly positioned AP oblique shoulder (Grashey) image demonstrate in profile?
Glenoid cavity
What breathing instructions should be given to the patient during an AP clavicle projection?
Suspend at the end of respiration
How does the appearance of the clavicle differ in the axial projections compared with the AP projections of the clavicle?
Most of the clavicle projected above the ribs and scapula
Which type of respiration should the patient use to obliterate lung detail?
Slow breathing
Which scapular border should be demonstrated free from superimposition with the ribs for the AP projection?
Lateral
When performing AP projections of the shoulder, where should the central ray be directed?
1 inch (2.5 cm) inferior to the coracoid process
Which projection of the shoulder best demonstrates the greater tubercle of the humerus in profile?
AP projection with external rotation
Which projection of the shoulder best demonstrates the humeral head in profile?
AP projection with external rotation
Which projection of the shoulder best demonstrates the lesser tubercle of the humerus in profile and pointing toward the glenoid cavity?
AP projection with internal rotation
Which projection of the shoulder is being performed when the patient is supine with the right shoulder centered on the IR a vertical CR is being directed perpendicular to the center of the IR and the humeral epicondyles are parallel with the plane of the IR?
AP projection with external rotation
Which projection will demonstrate the scapulohumeral joint space open and the glenoid cavity in profile?
AP oblique projection (Grashey method)
What would be the required patient position to demonstrate the left shoulder using the A P oblique projection (Grashey method)?
35 to 40 degrees LPO
If the patient’s condition permits, which shoulder joint should be demonstrated with the patient in an upright position?
Acromioclavicular
How many degrees and in which direction should the central ray be directed for the AP axial projection of the clavicle?
15 to 30 degrees
When performing the AP projection of the scapula, the central ray should be directed toward a point 2 inches ____ to the coracoid process?
Inferior
When performing a lateral projection of the scapula with the patient positioned right anterior oblique (RAO) or left anterior oblique (LAO) approximately how much body rotation is necessary for the average patient?
45 to 60 degrees
Superior part of sternum
Supports the sternal ends of the clavicles
Articulates with the anterior ends of the first pair of ribs to form the first sternocostal joints
Manubrium
Breast bone
Centered on midline of anterior thorax
Sternum
Classification of first seven ribs
Attach their costal cartilage to the lateral borders of the sternum
True
Inferior part of sternum
Corresponds with the T10 location of the thoracic column
Xiphoid process
Classification of ribs eleven and twelve
Floating
Only articulation between the upper limbs and the trunk
Sternoclavicular joints (SC)
Palpable concavity at superior manubrial border
Jugular notch
Portion of rib that articulated with transverse process of thoracic vertebrae
Tubercle
Classification of ribs that do not articulate directly with sternum
Attach to the costal cartilage of the seventh rib
Pairs of ribs eight through twelve
False
3 structures that form the bony thorax (chest)
Sternum
12 pairs of ribs
12 thoracic vertebrae
3 functions of the bony thorax
Protects heart and lungs
Supports wall of pleural
3 parts of the sternum
Manubrium (superior)
Body
Xiphoid process (inferior)
What is the approximate length of the sternum for the average adult?
6 inches (15 cm)
The jugular notch is found anterior to which precise location of the thoracic vertebral column?
The disk space between T2 and T3
Where is the sternal angle located?
At the junction of manubrium and sternal body
To which location of the thoracic column does the sternal angle correspond?
The disk space between T4 and T5
What structure form costovertebral joints?
The head of the rib and the demifacets of the two adjacent vertebral bodies
Consists of clavicle and scapula
Functions to connect the upper limb to the trunk of the body
Shoulder girdle
2 surfaces of the scapula
Costal (anterior, ribs)
Dorsal (posterior)