Shoulder

Question 1

Describe the capsule of the shoulder…

Answer 1

• Attached to articular margins
• Loose inferiorly to allow mobility
• Encloses tendon of LH biceps.
• Strengthened by ligaments and RC muscles

Question 2

What are the major ligaments of the shoulder?

Answer 2

Coracohumeral
Glenohumeral
Transverse humeral

Question 3

How many degrees of freedom are available at the shoulder?

Answer 3

Three

Question 4

Which muscles are responsible for shoulder flexion?

Answer 4

1) Deltoid (anterior fibres)
2) Pec Major
3) Biceps Brachii
4) Coracobrachialis

Question 5

Which muscles are responsible for shoulder extension?

Answer 5

1) Deltoid (posterior fibres)
2) Latissimus Dorsi
3) Teres Major
4) Triceps (long head)

Question 6

Which muscles are responsible for shoulder abduction?

Answer 6

1) Deltoid (middle fibres)

2) Supraspinatus

Question 7

Which muscles are responsible for shoulder adduction?

Answer 7

1) Pec major
2) Latissimus dorsi
3) Teres Major
4) Coracobrachialis
5) Subscapularis

Question 8

Which muscles are responsible for internal (medial) rotation of the shoulder?

Answer 8

1) Subscapularis
2) Deltoid (anterior fibres)
3) Pec major

Question 9

Which muscles are responsible for external (lateral) rotation of the shoulder?

Answer 9

1) Teres minor
2) Infraspinatus
3) Deltoid (posterior fibres)

Question 10

The subscapularis is innervated by which nerve(s)?

Answer 10

Upper and lower sub scapular nerves (C5, C6)

Question 11

The Supraspinatus is innervated by which nerve(s)?

Answer 11

Suprascapular nerve (C5, C6)

Question 12

The Teres minor is innervated by which nerve?

Answer 12

Axillary nerve (C5, C6)

Question 13

The infraspinatus is innervated by which nerve?

Answer 13

Suprascapular nerve (C5, C6)