PAS 407- The Shoulder UPDATED ACTUAL Questions and CORRECT
Answers
1) pectoral (anterior)
2) deltoid (lateral)
What are the three regions of the shoulder? 3) scapular (posterior)
originate off thorax and attach to scapula, clavicle, and
What are axioappendicular muscles?
humerus
What are scapulohumeral muscles? originate off the scapula to attach to the humerus
What structures make up the pectoral girdle? scapula and clavicle
S-shaped bone that articulates with the sternum
sternal end: medial/anterior
Describe the shape of the clavicle acromial end: lateral/posterior
smooth superior surface and rough inferior surface
structural weak point 2/3 along mid-shaft of clavicle due
Why are clavicular fractures common? to curvature and differences in ossification
What does it look like? medial fragment is elevated due to muscle pull and lateral
end is depressed due to gravity
sternal end of clavicle articulating with manubrium of ster-
What forms the sternoclavicular joint?
num
What is the only direct articulation between the axial and
sternoclavicular joint
appendicular skeleton?
What type of joint is the sternoclavicular joint? saddle
What movements does it allow? flexion and extension, abduction and adduction
What structure assists with these motions? articulating disc
, What are the anterior and posterior sternoclavicular liga- represents a thickening of the sternoclavicular joint cap-
ments? sule
What does they do? prevents dislocation
What is the extrinsic costal clavicular ligament? anchors clavicle to first rib
What does it do? prevents superior dislocation
acromial end of the clavicle articulating with the acromion
What forms the acromioclavicular joint?
process of the scapula
planar
What type of joint is the acromioclavicular joint?
anteroposterior gliding allows for greater degree of pro-
What movements does it allow?
traction and retraction
spans from clavicle to coracoid process
provides majority of support for acromioclavicular joint
What is the coracoclavicular ligament?
1) conoid ligament: medial; attached to coracoid process
What are its two bands and what are their functions? 2) trapezoid ligament: lateral; inserts on ligament
both bands suspend the scapula and resist gravitational
forces
runs from acromion process to coracoid process
What is the coracoacromial ligament?
helps form roof of subacromial tunnel and contributes to
What is its function?
impingement syndrome
Explain shoulder separation
Explain its three types
Answers
1) pectoral (anterior)
2) deltoid (lateral)
What are the three regions of the shoulder? 3) scapular (posterior)
originate off thorax and attach to scapula, clavicle, and
What are axioappendicular muscles?
humerus
What are scapulohumeral muscles? originate off the scapula to attach to the humerus
What structures make up the pectoral girdle? scapula and clavicle
S-shaped bone that articulates with the sternum
sternal end: medial/anterior
Describe the shape of the clavicle acromial end: lateral/posterior
smooth superior surface and rough inferior surface
structural weak point 2/3 along mid-shaft of clavicle due
Why are clavicular fractures common? to curvature and differences in ossification
What does it look like? medial fragment is elevated due to muscle pull and lateral
end is depressed due to gravity
sternal end of clavicle articulating with manubrium of ster-
What forms the sternoclavicular joint?
num
What is the only direct articulation between the axial and
sternoclavicular joint
appendicular skeleton?
What type of joint is the sternoclavicular joint? saddle
What movements does it allow? flexion and extension, abduction and adduction
What structure assists with these motions? articulating disc
, What are the anterior and posterior sternoclavicular liga- represents a thickening of the sternoclavicular joint cap-
ments? sule
What does they do? prevents dislocation
What is the extrinsic costal clavicular ligament? anchors clavicle to first rib
What does it do? prevents superior dislocation
acromial end of the clavicle articulating with the acromion
What forms the acromioclavicular joint?
process of the scapula
planar
What type of joint is the acromioclavicular joint?
anteroposterior gliding allows for greater degree of pro-
What movements does it allow?
traction and retraction
spans from clavicle to coracoid process
provides majority of support for acromioclavicular joint
What is the coracoclavicular ligament?
1) conoid ligament: medial; attached to coracoid process
What are its two bands and what are their functions? 2) trapezoid ligament: lateral; inserts on ligament
both bands suspend the scapula and resist gravitational
forces
runs from acromion process to coracoid process
What is the coracoacromial ligament?
helps form roof of subacromial tunnel and contributes to
What is its function?
impingement syndrome
Explain shoulder separation
Explain its three types
