1.4.6. Movement of the Glenohumeral Joint

Question 1

What Type of Joint is the Glenohumeral Joint?

Answer 1

Synovial Ball and Socket Joint

Question 2

What are the Movements which can occur at the Glenohumeral Joint?

Answer 2

1. Extension
2. Flexion
3. Abduction
4. Adduction
5. Medial rotation
6. Lateral Rotation

Question 3

What movement is produced by Extension at the Glenohumeral Joint?

Answer 3

The Upper Limb travels Backwards, in the Sagittal Plane

Question 4

What Muscles produce Extension at the Glenohumeral Joint?

Answer 4

1. Posterior Deltoid
2. Latissimus Dorsi
3. Teres Major

Question 5

What movement is produced by Flexion at the Glenohumeral Joint?

Answer 5

The Upper Limb travels Forwards, in the Sagittal Plane

Question 6

What Muscles produce Flexion at the Glenohumeral Joint?

Answer 6

1. (Both Heads of the) Biceps Bracii
2. Pectoralis Major
3. Anterior Deltoid
4. Corachobrachialis

Question 7

What movement is produced by Abduction at the Glenohumeral Joint?

Answer 7

The Upper Limb travels Away from the Midline, in the Coronal Plane

Question 8

What Muscle produces Abduction at the Glenohumeral Joint, from 0-15 degrees?

Answer 8

Supraspinatus

Question 9

What Muscle produces Abduction at the Glenohumeral Joint, from 15-90 degrees?

Answer 9

Middle Fibres of the Deltoid

Question 10

What needs to happen to allow for Abduction at the Glenohumeral Joint beyond 90 degrees?

Answer 10

Scapula Rotation

Question 11

What Muscles cause Scapula Rotation, to allow for Abduction at the Glenohumeral Joint beyond 90 degrees?

Answer 11

1. Trapezius

2. Serratus Anterior

Question 12

What movement is produced by Adduction at the Glenohumeral Joint?

Answer 12

The Upper Limb travels Towards the Midline, in the Coronal Plane

Question 13

What Muscles produce Adduction at the Glenohumeral Joint?

Answer 13

1. Pectoralis Major
2. Latissimus Dorsi
3. Teres Major

Question 14

What movement is produced by Medial Rotation at the Glenohumeral Joint?

Answer 14

Rotation Towards the Midline, so that the Thumb is pointing Medially

Question 15

What Muscles produce Medial Rotation at the Glenohumeral Joint?

Answer 15

1. Subscapularis
2. Pectoralis Major
3. Latissimus Dorsi
4. Teres Major
5. Anterior Deltoid

Question 16

What movement is produced by Lateral Rotation at the Glenohumeral Joint?

Answer 16

Rotation Away from the Midline, so that the Thumb is pointing Laterally

Question 17

What Muscles produce Lateral Rotation at the Glenohumeral Joint?

Answer 17

1. Infraspinatus

2. Teres Minor