Test Item Cluster | Full-Thickness Rotator Cuff Tear

The video tutorial discusses a test item cluster for diagnosing full thickness rotator cuff tears, which includes the painful arc sign, drop arm sign, and resisted infraspinatus test. Each test's psychometric properties, such as sensitivity and specificity, are explored. The video explains how combining these tests can improve diagnostic accuracy through positive likelihood ratios. Detailed procedures for each test are provided, along with their clinical significance in differentiating between rotator cuff tears and subacromial impingement syndrome.

What is the positive likelihood ratio when all three tests in the cluster are positive?

• 10.0

• 3.57

• 5.0

• 15.6

Which of the following is NOT a test included in the rotator cuff tear cluster?

• Neer test

• Painful arc sign

• Drop arm sign

• Infraspinatus manual muscle test

What is the sensitivity of the painful arc test?

• 0.90

• 0.74

• 0.81

• 0.33

In the painful arc test, pain occurring throughout the entire range of motion suggests:

• Subacromial impingement syndrome

• A healthy shoulder

• A true rotator cuff tear

• A dislocated shoulder

What is a positive drop arm sign indicative of?

• A shoulder dislocation

• Subacromial impingement syndrome

• A healthy rotator cuff

• A rotator cuff tear

During the drop arm test, what indicates a positive result?

• The patient can maintain the position with slight discomfort

• The patient experiences no pain but cannot maintain the position

• The patient cannot maintain the arm position or experiences pain

• The patient can maintain the arm position without pain

What is the sensitivity of the resisted infraspinatus test?

• 0.74

• 0.33

• 0.81

• 0.90

The resisted infraspinatus test is also known as:

• Resisted internal rotation test

• Resisted external rotation test

• Painful arc test

• Drop arm test

What should be ensured during the resisted infraspinatus test to avoid compensatory movements?

• The patient's shoulder is elevated

• The patient's arm and elbow stay against their side

• The patient's thumb is facing down

• The patient's arm is fully extended

Which test is part of both the subacromial impingement syndrome and full thickness rotator cuff tear clusters?

• Yergason's test

• Neer test

• Painful arc test

• Hawkins-Kennedy test