Week 10 - The Glenohumeral Joint Flashcards
what are the movements of the glenohumeral joint ?
- abduction / adduction
- flexion / extension
- medial / lateral rotation
- horizontal flexion / extension
what plane and axis does abduction / adduction occur in ?
- frontal plane
- anteroposterior axis
what plane axis does flexion / extension occur in ?
- sagittal plane
- mediolateral axis
what plane and axis does medial / lateral rotation occur in ?
- transverse plane
- longitudinal axis
what plane and axis does horizontal flexion / extension occur in ?
- transverse plane
- longitudinal axis
what are the 3 glenohumeral ligaments ?
- superior glenohumeral ligament
- medial glenohumeral ligament
- inferior glenohumeral ligament
what are the other 3 ligaments of the glenohumeral joint ?
- coracoclavicular ligament
- coracoacromial ligament
- coracohumeral ligament
what 3 things stabilise the glenohumeral joint ?
- ligaments
- labrum
- muscles
define labrum
- fibrocartilaginous structure
- deepens the glenoid fossa by forming a ring around it
what are the 4 rotator cuffs (SITS) ?
- subscapularis
- infraspinatus
- teres minor
- supraspinatus
what are the 4 anterior muscles of the glenohumeral joint ?
- pectoralis major
- coracobrachialis
- subscapularis
- bicep brachii
what are the 2 posterior muscle of the glenohumeral joint ?
- infraspinatus
- teres minor
what are the 2 superior muscles of the glenohumeral joint ?
- deltoid
- supraspinatus
what are the 3 inferior muscles of the glenohumeral joint ?
- latissimus dorsi
- teres major
- triceps brachii
subscapularis: action
medial rotation
