MSK Anatomy 1 --> Upper Limb Flashcards
Sternoclavicular Type of Joint
Synovial joint
Sternoclavicular Stabilised by
Costoclavicular ligament
Acromioclavicular Type of Joint
Synovial joint
Acromioclavicular Stabilised by
Coracoclavicular ligament
Serratus Anterior Actions
Damage causes winging of scapula
Serratus Anterior Nerve Supply
Long thoracic nerve
Trapezius Actions
Elevates, retracts and rotates scapula
Trapezius Nerve Supply
Accessory nerve
Levator scapulae Actions Elevates scapula
Elevates scapula
Levator scapulae Nerve Supply
Cervical nerve (C3, C4) and dorsal scapular nerve (C5)
Rhomboid major and minor Actions
Retract scapula
Rhomboid major and minor Nerve Supply
Dorsal Scapular nerve
Pectoralis minor Actions
Flexes, adducts, internally rotates shoulder
Pectoralis minor Nerve Supply
Medial pectoral nerve (C8, T1)
Why do fractures occur in clavicle
• The Strong ligaments at either end of the clavicle means that fractures are more common than dislocations’ not a posterior dislocation of the medial end is dangerous as it may compress the great vessels.
Glenohumural joint → Type of Joint
Synovial Joint
Glenohumural joint → Stabilised by
Rotator cuffs
Glenohumural joint → What prevents upward displacement of the humoral head
Coracoacromial ligament
Glenohumural joint → What occupies the space between the greater tubercle of the humerus and the acromian
Rotator cuffs?
Deltoid Action
Shoulder abduction, flexion and extension
Deltoid Nerve supply
Axillary nerve
Pectoralis major Action
Adducts and medially rotates the humerus
Pectoralis major Nerve supply
Lateral and medial pectoral nerve
Latissimus dorsi Action
Adducts, extend and internally rotate the arm
Latissimus dorsi Nerve supply
Thoracodorsal nerve
Teres Major Action
Internal rotation of the humerus