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Chapter 13 – The Shoulder and Upper Arm. Pages 470 - 476. Quiz. Question #1 List 5 structures involved in shoulder impingement syndrome. Question #2 Describe 3 causes of impingement syndrome. Quiz. Question #3 Describe the vascularization of the rotator cuff muscles. Question #4
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Chapter 13 – The Shoulder and Upper Arm Pages 470 - 476
Quiz • Question #1 • List 5 structures involved in shoulder impingement syndrome. • Question #2 • Describe 3 causes of impingement syndrome.
Quiz • Question #3 • Describe the vascularization of the rotator cuff muscles. • Question #4 • Describe how you would differentiate between impingement syndrome and a rotator cuff tear.
Quiz • Question #5 • What causes a positive test for the Neer Impingement Test and the Hawkins Impingement Test.
List 5 structures involved in shoulder impingement syndrome. • Rotator cuff tendons (primarily supraspinatus) • Long head of biceps brachii tendon • Subacromial bursa • GH joint capsule • Head of humerus • Coracoacromial arch
Describe 3 causes of impingement syndrome. • Anatomical variation in coracoacromial arch • Rotator cuff weakness/fatigue • Repetitive overhead motion • Scapular dyskinesis • GH instability • Poor posture
Describe the vascularization of the rotator cuff muscles. • Relatively poor vascularization • Hinders healing process • Supraspinatus – most susceptible to inflammatory conditions • Humeral head “wringing” the tendon dry of blood and vital nutrients
What causes a positive test for the Neer Impingement Test and the Hawkins Impingement Test. • The motion of the test impinges the rotator cuff (especially the supraspinatus) or long head of biceps brachii tendon between the greater tuberosity and inferior side of acromion process.