Shoulder

Question 1

List the extrinsic superficial muscles of the shoulder

Answer 1

Trapezius

Latissimus dorsi

Question 2

Trapezius is composed of 3 parts. List them

Answer 2

descending, transverse and ascending

Question 3

What is the nerve supply to trapezius?

Answer 3

Spinal accessory nerve

Question 4

What is the nerve supply to latissimus dorsi?

Answer 4

Thoracodorsal nerve

Question 5

Which movements does latissimus dorsi enable?

Answer 5

Arm: adduction, extension, internal rotation

Question 6

List the extrinsic deep muscles of the shoulder

Answer 6

Levator scapulae
Rhomboid major
Rhomboid minor

Question 7

What is the nerve supply to the extrinsic deep muscles of the shoulder?

Answer 7

Dorsal scapular nerve

Question 8

List the intrinsic muscles of the shoulder

Answer 8

Deltoid
Supraspinatus
Infraspinatus
Subscapularis
Teres minor

Question 9

What is the nerve supply to deltoid?

Answer 9

Axillary nerve

Question 10

Which movements does deltoid enable?

Answer 10

Shoulder: abduction (>15 degrees), flexion, extension

Question 11

What is the nerve supply to supraspinatus?

Answer 11

Suprascapular nerve

Question 12

Which movements does supraspinatus enable?

Answer 12

Arm: abduction (<15 degrees)

Question 13

What is the nerve supply to infraspinatus?

Answer 13

Suprascapular nerve

Question 14

Which movements does infraspinatus enable?

Answer 14

Arm: external rotation

Question 15

What is the nerve supply to subscapularis?

Answer 15

Subscapular nerve

Question 16

Which movements does subscapularis enable?

Answer 16

Arm: internal rotation

Question 17

What is the nerve supply to teres minor?

Answer 17

Axillary nerve

Question 18

Which movements does teres minor enable?

Answer 18

Arm: external rotation

Question 19

Which movements does trapezius enable?

Answer 19

Scapular depression, retraction and elevation

Question 20

Which muscles are involved in flexion of the shoulder?

Answer 20

Anterior deltoid, pectoralis major

Question 21

Which muscles are involved in extension of the shoulder?

Answer 21

Posterior deltoid, teres major, triceps

Question 22

Which muscle is the main muscle involved in pull ups\?

Answer 22

Latissimus dorsi

Question 23

Which muscles are involved in abduction of the shoulder?

Answer 23

Medial deltoid, supraspinatus

Question 24

What is the requirement for full abduction of the shoulder?

Answer 24

Scapular rotation via serratus anterior

Impingement of greater tuberosity by acromian process

Question 25

What is the most common rotator cuff injury?

Answer 25

Partial tear/ complete rupture of supraspinatus tendon

Question 26

What is 'painful arc syndrome'?

Answer 26

Impingement of supraspinatus between humerus and acromion = pain during 50 - 130 degrees abduction

Question 27

What type of joints are the acriomioclavicular, glenohumeral and sternoclavicular joints respectively?

Answer 27

Plane Ball and socket Saddle

Question 28

Which nerve can be damaged in shoulder dislocation, leading to what clinical symptom?

Answer 28

Axillary nerve injury | Numbness in badge patch area

Question 29

Coracoclavicular ligaments are most commonly damaged in what?

Answer 29

Acriomioclavicular joint dislocation

Question 30

Adhesive capsulitis is most commonly known as... | What range of movement is typically reduced?

Answer 30

Frozen shoulder | External rotation