shoulder Flashcards
shoulder also known as what joint
gleno-humeral joint
what type of joint is the gleno-humeral joint
synovial ball and socket joint formed by the humeral head and the glenoid fossa of the scapula
shoulder girdle is formed by the
scapula,clavicle, proximal humerus and the deltoid and rotator cuff muscles
rotator cuff muscles job
stabilising the shoulder joint
muscles of the rotator cuff
- supraspinatus
- infraspinatus
- teres minor
- subscapularis
which muscles inserts onto the greater tuberosity of the humerus
the supraspinatus, infraspinatus and heres minor
which muscle inserts onto the lesser tuberosity of the humerus
the subscapularis
role of supraspinatus muscle
initiates abduction of the shoulder joint
role of infraspinatus and teres minor muscles
external rotators of the shoulder
role of subscapularis muscle
principal internal rotator of shoulder
role of deltoid muscle
main abductor of the shoulder joint
what can happen to the rotator cuff muscles
they are under considerable stress so acute or degenerate tears can occur
chronic rotatory insufficiency causes
glenohumeral osteoarthritis
most common should problem in young people
shoulder instability
most common shoulder problem in middle aged people
rotator cuff tears and frozen shoulder