Shoulder Flashcards
List the extrinsic superficial muscles of the shoulder
Trapezius
Latissimus dorsi
Trapezius is composed of 3 parts. List them
descending, transverse and ascending
What is the nerve supply to trapezius?
Spinal accessory nerve
What is the nerve supply to latissimus dorsi?
Thoracodorsal nerve
Which movements does latissimus dorsi enable?
Arm: adduction, extension, internal rotation
List the extrinsic deep muscles of the shoulder
Levator scapulae
Rhomboid major
Rhomboid minor
What is the nerve supply to the extrinsic deep muscles of the shoulder?
Dorsal scapular nerve
List the intrinsic muscles of the shoulder
Deltoid Supraspinatus Infraspinatus Subscapularis Teres minor
What is the nerve supply to deltoid?
Axillary nerve
Which movements does deltoid enable?
Shoulder: abduction (>15 degrees), flexion, extension
What is the nerve supply to supraspinatus?
Suprascapular nerve
Which movements does supraspinatus enable?
Arm: abduction (<15 degrees)
What is the nerve supply to infraspinatus?
Suprascapular nerve
Which movements does infraspinatus enable?
Arm: external rotation
What is the nerve supply to subscapularis?
Subscapular nerve
Which movements does subscapularis enable?
Arm: internal rotation
What is the nerve supply to teres minor?
Axillary nerve
Which movements does teres minor enable?
Arm: external rotation
Which movements does trapezius enable?
Scapular depression, retraction and elevation
Which muscles are involved in flexion of the shoulder?
Anterior deltoid, pectoralis major
Which muscles are involved in extension of the shoulder?
Posterior deltoid, teres major, triceps
Which muscle is the main muscle involved in pull ups\?
Latissimus dorsi
Which muscles are involved in abduction of the shoulder?
Medial deltoid, supraspinatus
What is the requirement for full abduction of the shoulder?
Scapular rotation via serratus anterior
Impingement of greater tuberosity by acromian process
What is the most common rotator cuff injury?
Partial tear/ complete rupture of supraspinatus tendon
What is ‘painful arc syndrome’?
Impingement of supraspinatus between humerus and acromion = pain during 50 - 130 degrees abduction
What type of joints are the acriomioclavicular, glenohumeral and sternoclavicular joints respectively?
Plane
Ball and socket
Saddle
Which nerve can be damaged in shoulder dislocation, leading to what clinical symptom?
Axillary nerve injury
Numbness in badge patch area
Coracoclavicular ligaments are most commonly damaged in what?
Acriomioclavicular joint dislocation
Adhesive capsulitis is most commonly known as…
What range of movement is typically reduced?
Frozen shoulder
External rotation
