Unit 7 Shoulder
Card Set Information
Unit 7 Shoulder
Info not including osteology
Name the members of the SC joint
Sternal end of clavicle
1st costal cartilage
What is joint classification is is the SC joint?
Synovial unmodified saddle/sellar
Osteokinematic motions of the SC joint involve what motions?
What are the three ligaments of the SC joint?
What does the Anterior/Posterior Sternoclavicular ligament resist?
Anterior and posterior translation of the clavicle, respectively
What actions does the Interclavicular ligament resist?
Inferior translation of the clavicle
What action does the costoarticular ligament resist?
Elevation of the clavicle
What members are involved in the AC joint?
Lateral end of clavicle
Acromion of scapula
What classification is the AC joint?
Synovial, modified ovoid/planar
What motions does the AC joint allow?
What 2 ligaments does the AC joint contain?
What actions does the acromioclavicular joint resist?
Resist superior translation of the joint members
The coracoclavicular ligament contains two components. Name them and where they attach
: Attaches to the conoid tubercle posteriorly
: Attaches to the trapezoid line anteriorly
What are the two functions of the coracoclavicular ligament?
Provide weight bearing support for the upper limb of the clavicle
Maintains the position of the clavicle on the acromion
What are the members of the glenohumeral joint?
What classification is the glenohumeral joint?
Synovial, unmodified ovoid/spheroidal
What motions are available to the Glenohumeral joint?
Name 4 unique features of the capsule of the GH joint
Large, loose capsule with the shoulder in neutral, taut superiorly, slack inferior and anterior in the neutral position
Long head of the biceps is intrascapular
Inferior capsule is least reinforced
Anteriorly the capsule is most reinforced
Name the 3 openings in the GH capsule
For subscapularis bursa
Between tubercles of the humerus head
For infraspinatus bursa
Where do the fibrous membranes attach on the GH capsule?
Margins of the glenoid cavity
Shaft of the humerus inferior to the anatomical neck
Where is the labrum and what's its function?
A fibrocartilage ring that attaches to the margin of the GH fossa
Increase articular surface of glenoid fossa
What is the proximal attachment of the Glenohumeral ligament?
Superior medial to glenoid margin
What are the three distal attachments of the glenohumeral ligament?
Superior portion - lesser tubercle of humerus
Middle portion - Inferior aspect of lesser tubercle
Inferior portion - Inferior aspect of the anatomical neck
What is the function of the glenohumeral ligament?
Check anterior glide, lateral rotation of GH joint
Describe the coracohumeral ligament
Broad thickening of superior capsule region
What are the attachments for the coracohumeral ligament?
Lateral coracoid process to the anterior aspect of the greater tubercle and lesser tubercles.
What are the two functions of the coracohumeral ligament?
Limits inferior translation of the humerus due to gravity
Limits ER of GH joint
Describe the coracoacromial ligament
Strong, broad triangular ligament
What is the attachment of the coracoacromial ligament?
Base of coracoid process to the apex of the acromion
What is the function of the coracoacromial ligament?
Forms coracoacromial arch
What are the attachments of the transverse humeral ligament?
Anterior aspects of the tubercles of the humerus
What are the functions of the transverse humeral ligament?
Holds the tendon of the long head of the biceps in the intertubercular sulcus
Describe the subscapular bursa and list its functions
Evagination of capsule anteriorly between subscapularis and the humeral neck
Functions to protect the tendon in the region of the coracoid process
Where is the subacromial/subdeltoid bursa located?
With the subacromial space between the supraspinatus and deltoid mm
Where is the tendon sheath of the long head of the biceps located?
In the bicipital groove
Name the 4 tendons of the rotator cuff
The blend of tendons that form the musculotendinous collar surround what aspects of the GH joint?
What is the function of the rotator cuff?
Stabilize and hold head of the humerus in the glenoid fossa
What supplies the blood to the rotator cuff?
Anterior/posterior circumflex humeral artery
What innervates the rotator cuff?
Branches of posterior cord
Lateral pectoral n