The Recurrent Anterior Dislocating Shoulder

Signs and Symptoms

 

Anterior shoulder dislocation (Sports Injury Medicine Clinic, 2009):

  • History of direct or indirect trauma to the shoulder e.g. arm overhead and forced backward 
  • Pain is often sudden and severe
  • Often associated with a feeling of instability with movement and/or sensation of shoulder 'popping out'
  • Shoulder may look obviously different to the other side (sulcus sign pictured below) 
  • Patient will usually hold the arm close into their body to avoid pain
  • Pins and needles or numbness may occur through the arm to the hand if nerve damage has occured

Recurrent dislocation and instability

  • Increasing frequency and ease of repeated dislocation or subluxation (partial dislocation)
  • Feeling of apprehension (uncomfortable), dead arm, clicking, clunking or popping with certain movements
  • Weakening of surrounding musculature (e.g. rotator cuff mucles)
  • May be associated impingement (jamming of  structures)

Positive sulcus sign: gapping between the top of the shoulder and top of the arm bone 

If you suspect you have suffered an anterior (forward) shoulder dislocation, other associated injuries must be considered such as:

  • Bankart lesions in 80-89% of patients
  • Anterior capsular insufficiency in 74% of patients
  • Hill-Sachs lesions in 67% of patients
  • Inferior glenoid labral tears in 51% of patients
  • Glenohumeral ligament insufficiency in 50% of patients
  • Partial or complete rotator cuff tears in 13% of patients
  • Dysplastic glenoid in 13% of patients
  • Biceps tendon lesions in 12% of patients
  • Brachial plexus injuries in 11% of patients
  • Posterior glenoid labral tear in 11% of patients
  • Axillary nerve injuries in 8-10% of patients
  • SLAP lesions in 8% of patients
  • Partial subscapularis tear in 8% of patients
  • Loose bodies in 5% of patients
  • (Emedicine retrieved 15 April 2009)

For more information about these topics refer to your local health professional