Glenohumeral joint

Question 1

Glenohumeral flexion occurs around which axis?

Answer 1

X

Question 2

Glenohumeral flexion occurs on which plane?

Answer 2

Sagittal

Question 3

Osteokinematics of GH flexion

Answer 3

The humerus moves anterior/superior to 90 degrees, then posterior/superior to full flexion.

Question 4

Arthrokinematics of GH flexion

Answer 4

The head of the humerus spins and glides posterior/inferior to 90 degrees, then anterior/inferior to full flexion.

Question 5

Force in GH flexion

Answer 5

Concentric contraction of biceps, coracobrachialis, anterior deltoid and the clavicular portion of the pec major.

Question 6

Resistance in GH flexion

Answer 6

Gravity

Question 7

Control in GH flexion

Answer 7

Eccentric contraction of the long head of the triceps, lats, poeterior deltoid.

Question 8

GH extensions occurs around which axis?

Answer 8

X

Question 9

GH extension occurs on which plane?

Answer 9

Sagittal plane

Question 10

Osteokinematics of GH extension

Answer 10

The humerus moves anterior/inferior to 90 degrees, then posterior/inferior to anatomical, then posterior/superior to full hyperextension.

Question 11

Arthrokinematics of GH extension

Answer 11

The head of the humerus spins and glides posterior/superior first to 90 degrees, then anterior/superior to anatomical, then anterior/inferior to full hyperextension.

Question 12

Force of GH extension

Answer 12

Gravity to anatomical, then concentric contraction of the posterior deltoid and the long head of triceps.

Question 13

Resistance of GH extension

Answer 13

Contraction of antagontists to anatomical, then gravity after anatomical.

Question 14

Control of GH extension

Answer 14

Eccentric contraction of antagonists (biceps, anterior deltoid, coracobrachialis)

Question 15

GH abduction occurs on which axis?

Answer 15

Z

Question 16

GH abduction occurs on which plane?

Answer 16

Frontal plane

Question 17

Osteokinematics of GH abduction

Answer 17

The humerus moves superior/lateral for the first 90 degrees, then superior/medial.

Question 18

Arthrokinematics of GH abduction

Answer 18

The head of the humerus rolls superior and glides inferior

Question 19

Force in GH abduction

Answer 19

Concentric contraction of agonists (supraspinatus in first 30 degrees, then deltoid)

Question 20

Resistance in GH abduction

Answer 20

Gravity

Question 21

Control in GH abduction

Answer 21

Eccentric contraction of antagonists (lats and teres major)

Question 22

GH adduction occurs around which axis?

Answer 22

Z

Question 23

GH adduction occurs on which plance?

Answer 23

Frontal plane

Question 24

Osteokinematics of GH adduction (from the abducted position)

Answer 24

The humerus moves inferior/lateral, then inferior/medial.

Question 25

Arthrokinematics of GH adduction

Answer 25

The head of the humerus rolls inferior and glides superior.

Question 26

Force in GH adduction

Answer 26

Gravity

Question 27

Resistance in GH adduction

Answer 27

Eccentric contraction of antagonists (deltoid and supraspinatus)

Question 28

Control in GH adduction

Answer 28

Eccentric contraction of antagonists (deltoid and supraspinatus)

Question 29

Rotation of the GH joint occurs around which axis?

Answer 29

Y

Question 30

Rotation of the GH joint occurs on which plane?

Answer 30

Horizontal plane

Question 31

Osteokinematics of GH medial rotation

Answer 31

The anterior humerus moves medially.

Question 32

Arthrokinematics of GH medial rotation

Answer 32

The head of the humerus rolls medially and glides laterally.

Question 33

Force in GH medial rotation

Answer 33

Concentric contraction of agonists (lats, subscapularis, teres major, pec major, anterior deltoid)

Question 34

Control and resistance in medial rotation

Answer 34

Eccentric contraction of antagonists (teres minor, infraspinatus, posterior deltoid)

Question 35

Osteokinematics of GH lateral rotation

Answer 35

The anterior humerus moves laterally

Question 36

Arthrokinematics of GH lateral rotation

Answer 36

The head of the humerus rolls laterally and glides medially

Question 37

Force in GH lateral rotation

Answer 37

Concentric contraction of agonists (teres minor, infrapsinatus, posterior deltoid)

Question 38

Control and resistance in GH lateral rotation

Answer 38

Eccentric contraction of antagonists (lats, subscapularis, teres major, pec major and anterior deltoid)

Question 39

GH horizontal abduction and adduction occurs around which axis?

Answer 39

Y

Question 40

GH horizontal adduction and abduction occurs on which plane?

Answer 40

Horizontal plane

Question 41

Osteokinematis oc GH horizontal adduction

Answer 41

The humerus moves anterior and medial.

Question 42

Arthrokinematics of GH horizontal adduction

Answer 42

The head of the humerus rolls anterior/medial and glides posterior/lateral

Question 43

Force of GH horizontal adduction

Answer 43

Concentric contraction of agonists (pec major, anterior deltoid, biceps, coracobrachialis)

Question 44

Control and resistance of GH horizontal adduction

Answer 44

Eccentric contraction of antagonists (posterior deltoid, long head of triceps, teres major)

Question 45

Osteokinematics of GH horizontal abduction

Answer 45

Humerus moves posterior/lateral

Question 46

Arthrokinematics of GH horizontal abduction

Answer 46

The head of the humerus rolls posterior/lateral and glides anterior/medial

Question 47

Force in GH horizontal abduction

Answer 47

Concentric contraction of agonists (posterior deltoid, long head of triceps, ters major)

Question 48

Control and resistance in GH horizontal abduction

Answer 48

Eccentric contraction of antagonists (pec major, anterior deltoid, biceps, coracobrachialis)