Shoulder Joint Ch 10

Question 1

What type of joint is the shoulder?

Answer 1

Ball and socket joint w/ movement in all 3 planes and axes of
motion
Sagittal, frontal, transverse

Question 2

What movements occur at the shoulder joint?

Answer 2

Flexion/extension/hyperextension
Internal (medial)/External (lateral) rotation
Adduction/Abduction
Horizontal Adduction/Abduction
Scaption

Question 3

Scaption

Answer 3

Occurs in the scapular plane not in the sagittal or frontal plane.
Allows the shoulder to move in 180 degrees upward/downward directions.
30 degrees forward of the frontal plane
Most common functional activities occur in this plane of motion.

Question 4

Give an example of arthrokinematics in the body?

Answer 4

Humeral head moving in the glenoid fossa

Femoral head moving in the acetabulum

Question 5

Give an example of osteokinematics in the body?

Answer 5

Radius articulating around the capitulum of the humerus-supination/pronation

Question 6

Glenohumeral Rotation

Answer 6

IR- the humeral head glides posteriorly
ER- the humeral head glides anteriorly.
Humeral head moves in the opposite direction of the body segment
End Feel: Soft tissue stretch/firm secondary to the tension of the ligaments/ muscles/joint capsule; -all shoulder movements

Question 7

ROM at Shoulder

Answer 7

Flexion- 0 to 180_
Extension 0 to (returning to anatomical position)_
Hyperextension-0 to 45_
Medial (internal) rotation 0 to 70__ (move from neutral position)
Lateral (external) rotation 0 to 90_
Horizontal abduction 0 to 45(Clarkson, 2013)
Horizontal adduction 0 to 135 (Clarkson, 2013)
Scaption-0 to 30

Question 8

Glenoid Labrum

Answer 8

Fibrocartilanginous ring attached to the rim of the glenoid fossa; glenoid fossa deepens the articular cavity

Question 9

Subscapular fossa

Answer 9

Anterior (costal) surface / attachment for the subscapularis muscle

Question 10

Infraspinous fossa

Answer 10

below the spine of the scapula/attachment for the infraspinatus muscle

Question 11

Supraspinous fossa

Answer 11

above the spine of the scapula/attachment for the supraspinatus muscle

Question 12

Acromion process

Answer 12

broad, flat area located on the superior lateral aspect /attachment for the middle deltoid

Question 13

Thoracolumbar fascia

Answer 13

Superficial fibrous sheet attaching to:
Spinous processes of the lower thoracic and lumbar vertebra
Supraspinal ligament
Posterior part of the iliac crest
Covering the sacrospinalis muscle
Provides a broad attachment for the latissimus dorsi

Question 14

Where is the subdeltoid bursa located?

Answer 14

located between deltoid muscle and the joint capsule

Question 15

Where is the subacromial bursa located?

Answer 15

located below the acromion and coracoacromional ligament continuous with the subdeltoid bursa

Question 16

Rotator cuff

Answer 16

tendinous band formed by blending together from tendinous insertions of the
Subscapularis
Supraspinatus
Infraspinaous
Teres Minor
Muscles assist keeping the head of the humerus “rotating” against the glenoid fossa during joint motion