Lecture #5 (Huge portion of EXAM) Flashcards
What is the main purpose of the rotator cuff?
To keep the glenohumeral joint in place
What are the ligaments surrounding the glenohumeral joint called?
- Superior glenohumeral
- Middle glenohumeral
- Inferior glenohumeral (slack for lifting arm above head)
degrees of abduction in glenohumeral joint?
90-95
Degrees of extension in glenohumeral joint?
40-60
Degrees of flexion?
90-100
Degrees of adduction?
0
Degrees of internal and external rotation?
70-90
What are the strong and weak muscles in the glenohumeral joint?
Weak = external rotators Strong = Internal rotators
What are the 4 muscles of the rotator cuff?
- Supraspinatus
- Infraspinatus
- Teres minor
- Subscapilaris
What are some intrinsic (small) muscles in the glenohumeral joint?
- Deltoid
- Teres major
Pectorallis major OINA?
O: Medial half of clavicle, costal cartilage of first 6 ribs
I: Lateral lip of bicipital groove
N: medial and lateral pectoral nerve
A: Internal rotation, adduction, horizontal adduction
How to strengthen pectorallis major?
-Chest compressions
-Push ups
FREE WEIGHT: laying on back doing the fly and bringing the arms in
How to stretch pectorallis major?
Doorway stretch
Latissimus dorsi OINA?
O: Posterior ilium, spinous process of sacrum up to T6
I: Floor of bicipital groove
N: Thoracodorsal nerve
A: Adduction, Internal rotation, extension
How to strengthen lat dorsi?
Lat pull downs with thera band
FREE WEIGHTS: bent over one arm rows
How to stretch lats dorsi?
Arms above head and lean to one sidw
Teres major OINA?
O: Inferior angle of the scapula
I: Medial lip of the bicipital groove
N: Lower supscapular nerve
A: Adduction, internal rotation, extension
How to strengthen teres major?
Lat pull downs with thera band
FREE WEIGHT: Bent over one arm rows
Name 3 muscles which internal rotation and adduction the glenohumeral joint?
Teres major
Latissimus dorsi
Pectorallis major
Deltoid OINA?
O: lateral 1/3 of clavicle, acromion, spine of scapula
I: Deltoid tuberosity
N: axillary nerve
A: Anterior/flexion, Middle/Abduction, Posterior/Extension
How to strengthen deltoid?
Theraband on foot and flex/abduct/extend
FREE WEIGHT = Same
Coracobrachialis OINA?
O: Coracoid process
I: Middle 1/3 of humerus
N: Musculocutaneous
A: Flexion
Subscapularis muscle OINA?
O: Subscapular fossa
I: lesser tubricle (only muscle that attaches here)
N: Upper/lower subscapular nerve
A: Internal rotation
Strengthning of subscapularis?
Resist on internal rotation with thera band
FREE WEIGHT: lie on arm and fold it towards body
