Shoulder Dislocation: Anterior vs Posterior
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Questions and Answers

What is the gender distribution for traumatic anterior glenohumeral dislocations?

  • 80% male, 20% female
  • 72% male, 28% female (correct)
  • 60% male, 40% female
  • 50% male, 50% female

When is recurrent anterior glenohumeral dislocation more likely to occur?

  • After the age of 30
  • After the age of 40
  • Within 2 years of the first dislocation event (correct)
  • Within 1 year of the first dislocation event

What is the main ligamentous restraint to anterior translation during shoulder dislocation?

  • Coracohumeral ligament
  • Superior glenohumeral ligament
  • Middle glenohumeral ligament
  • Inferior glenohumeral ligament (correct)

What might be observed in the lateral deltoid region due to a shoulder dislocation?

<p>Loss of sensation (B)</p> Signup and view all the answers

What is a common mechanism of injury for traumatic anterior glenohumeral dislocations?

<p>Abduction and external rotation of the arm (C)</p> Signup and view all the answers

Which test is associated with an increased risk of recurrent instability if positive six weeks after an anterior glenohumeral dislocation event?

<p>Apprehension test (A)</p> Signup and view all the answers

What type of exercises should be commenced early for posterior dislocation?

<p>Motor control and proprioceptive exercises for rotator cuff and scapular muscles (B)</p> Signup and view all the answers

What symptom may indicate posterior subluxation/instability?

<p>Slipping feeling with pushing (B)</p> Signup and view all the answers

What is the specific management approach if posterior dislocation is not relocated?

<p>Refer to the emergency department for relocation (C)</p> Signup and view all the answers

Which muscles should often be focused on in cases of ongoing posterior instability signs and symptoms?

<p>Posterior rotator cuff muscles and posterior deltoid (A)</p> Signup and view all the answers

What type of test can be used to assess posterior subluxation/instability?

<p>Wall push-up test (C)</p> Signup and view all the answers

Which imaging modality is the preferred choice for investigating associated pathology in a patient with traumatic anterior glenohumeral dislocation?

<p>Magnetic resonance imaging (MRI) (A)</p> Signup and view all the answers

What is the recommended approach for managing many dislocations successfully?

<p>Rehabilitation and exercise (C)</p> Signup and view all the answers

In which age group should a clinician assume a rotator cuff tear until cleared in a patient with traumatic anterior glenohumeral dislocation?

<p>Over 50 years old (C)</p> Signup and view all the answers

Which scenario is most likely to result in anterior shoulder instability?

<p>Tackling an opponent with the arm straight and extended (B)</p> Signup and view all the answers

What is the primary cause of posterior shoulder dislocation according to the text?

<p>Force to the back of the shoulder (B)</p> Signup and view all the answers

What distinguishes subluxation from glenohumeral joint dislocation?

<p>Humeral head moves partly on the glenoid but is not locked out (C)</p> Signup and view all the answers

Which factor should be considered alongside pathology associated with recurrence risk in patients with traumatic anterior glenohumeral dislocation?

<p>Kinesiophobia (A)</p> Signup and view all the answers

What percentage of traumatic shoulder dislocations are classified as posterior dislocations?

<p>2-4% (C)</p> Signup and view all the answers

Hill Sachs lesions are typically associated with which type of shoulder injury?

<p>Glenohumeral joint dislocation (A)</p> Signup and view all the answers

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