Term
| Posterior musculature of the rotator cuff |
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Definition
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
(SITS)
+/- triceps |
|
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Term
| Anterior musculature of the rotator cuff |
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Definition
Pectoralis major
Latissimus dorsi
Teres major
(PLT)
+deltoid and subscapularis |
|
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Term
| Positional landmarks of the scapula: |
|
Definition
Superior angle: T2
Scapular spine at medial border: T3
Inferior angle: T8
distance between vertebrae and medial border at scapular spine: 5cm
distance between medial border at scapular spine and inferior angle: 5cm |
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Term
| Degrees of upward rotation of the scapula |
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Definition
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Term
| Resting position of the scapula |
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Definition
| 30-45 degrees forward of the frontal plane and tipped 10-20 degrees anteriorly |
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Term
| Orientation of the concavity of the glenoid varies according to what? |
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Definition
| the resting position of the scapula |
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Term
| Normal resting position of the scapula will orient the glenoid fossa facing how? |
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Definition
| anterior, lateral, and slightly superior |
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Term
|
Definition
| increase the depth curvature of the glenoid fossa providing more joint surface for humeral articulation |
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|
Term
| Glenoid labrum is a ______________ (type of connective tissue) collar or ring that is continuous with the _________ and __________ (muscle attachments) |
|
Definition
fibrocartilaginous
long head of the biceps
triceps tendons |
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|
Term
Osteokinematic motions at the glenohumeral joint:
vertical axis on the horizontal plane |
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Definition
External rotation
Internal rotation |
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Term
Osteokinematic motions at the glenohumeral joint:
AP axis on the frontal plane |
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Definition
|
|
Term
Osteokinematic motions at the glenohumeral joint:
transverse (horizontal) axis on the median plane |
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Definition
|
|
Term
Osteokinematic motions at the sternoclavicular joint:
A/P axis on the frontal plane |
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Definition
|
|
Term
Osteokinematic motions at the sternoclavicular joint:
Vertical axis on the horizontal plane |
|
Definition
|
|
Term
Osteokinematic motions at the sternoclavicular joint:
Oblique axis |
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Definition
Upward/lateral rotation
Downward/medial rotation |
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Term
| Muscles of external rotation at the GHJ |
|
Definition
Posterior deltoid
Teres minor
Infraspinatus |
|
|
Term
| Muscles of internal rotation at the GHJ |
|
Definition
Anterior deltoid
Pectoralis major
Teres major
Latissimus dorsi
Subscapularis |
|
|
Term
| Muscles of abduction at the GHJ |
|
Definition
Supraspinatus
Lateral deltoid |
|
|
Term
| Muscles of adduction at the GHJ |
|
Definition
Posterior deltoid
Anterior deltod
Pectoralis major
Long head of triceps
Coacobrachialis
Teres major
Latissimus dorsi |
|
|
Term
| Muscles of extension at the GHJ |
|
Definition
Posterior deltoid
Long head of triceps
Teres major
Pectoralis major (Sternocostal)
Latissimus dorsi |
|
|
Term
| Muscles of flexion at the GHJ |
|
Definition
Anterior deltoid
Pectoralis major (clavicular)
Coracobrachialis
Biceps brachii |
|
|
Term
| Muscles of elevation at the SCJ |
|
Definition
Upper trapezius
Levator scapulae
Rhomboid major
Rhomboid minor |
|
|
Term
| Muscles of depression at SCJ |
|
Definition
Subclavius
Pectoralis minor
Pectoralis major (lower fibers)
Lower trapezius
Serratus anterior (lower fibers)
Latissimus dorsi (lower fibers) |
|
|
Term
| Muscles of protraction at SCJ |
|
Definition
Pectoralis minor
Pectoralis major
Serratus anterior |
|
|
Term
| Muscles of retraction at SCJ |
|
Definition
Rhomboid minor
Trapezius (middle fibers)
Rhomboid major
Latissimus dorsi (upper fibers) |
|
|
Term
| Muscles of upward/lateral rotation at SCJ |
|
Definition
Trapezius (upper and lower part)
Serratus anterior |
|
|
Term
| Muscles of downward/medial rotation |
|
Definition
Levator scapulae
Rhomboid minor
Rhomboid major
Pectoralis minor
Pectoralis major (lower part)
Latissimus dorsi |
|
|
Term
| Posterior axioscapular muscles |
|
Definition
Levator scapulae
Trapezius
Rhomboids minor and major |
|
|
Term
| Anterior axioscapular muscles |
|
Definition
Subclavius
Pectoralis minor
Serratus anterior |
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|
Term
| Anterior scapulohumeral muscle function |
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Definition
| Connect the humerus to the scapula and stabilize the glenohumeral joint |
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Term
| Posterior scapulohumeral muscles include what? |
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Definition
| The posterior components of the rotator cuff |
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Term
| Axiohumeral muscles, function, and action location |
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Definition
Muscles: Pectoralis major and latissimus dorsi
Function: Attach the humerus to the axial skeleton Action: at the glenohumeral and sternoclavicular joints |
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Term
|
Definition
| Primarily stabilizers of the shoulder; secondarily they move the GH joint |
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Term
| Supraspinatus attachments, action, innervation |
|
Definition
P:supraspinous fossa of scapula
D: greater tuberosity/tubercle of the humerus
A: initiates abduction
I: suprascapular nerve (C5-C6) |
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Term
| Infraspinatus attachments, action, innervation |
|
Definition
P: infraspinous fossa of the scapula
D: greater tuberosity/tubercle of the humerus
A: primary lateral rotator of the GHJ
I: suprascapular nerve (C5-C6) |
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|
Term
| Teres minor attachments, action, innervation |
|
Definition
P: lateral border of the scapula
D: greater tuberosity/tubercle of the humerus
A: assists infraspinatus with lateral rotation and weak adduction
I: axillary nerve (C5-C6) |
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Term
| Deltoid attachments, action, innervation |
|
Definition
| P: lateral third of the clavicle, acromion, and spine of the scapula D: deltoid tuberosity of the humerus A: primary abductior of the GHJ, anterior and posterior parts assist with lateral and medial rotation of GHJ I: Axillary nerve (C5-C6) |
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|
Term
| Teres major attachments, action, innervation |
|
Definition
P: inferior angle of the scapula D: medial lip of the intertubercular sulcus/ crest of the lesser tubercle A: at the GHJ- medial rotation, adduction, and extension
I: lower subscapular nerve (C5-C6) |
|
|
Term
| Quadrangular space contents and boundaries |
|
Definition
contents: axillary nerve and posterior circumflex humeral artery
Boundaries: (2 muscles, 2 structures) teres major and long head of triceps, surgical neck of the humerus and the joint capsule |
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Term
| Suprascapular nerve origin and location |
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Definition
| superior trunk of the brachial plexus (C5-C6), passes under the suprascapular ligament |
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Term
| Suprascapular artery origin and location |
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Definition
| thyrocervical trunk of the subclavian artery, passes over the suprascapular ligament |
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