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Shoulder Case 12 Background

Inferior shoulder dislocations are very rare and are estimated to make up just 0.5% of all shoulder dislocations.

Luxatio Erectae are almost always traumatic, and most frequently following a fall.

These injuries are important to recognize due to the higher association with other limb threatening injuries than typical anterior shoulder dislocations:

  • About 40% of inferior shoulder dislocations are associated with a proximal humerus fracture.
  • Neurologic injury is seen in 30% of these patients.
  • Vascular injury occurs in about 10% of patients, with almost all injuries being to the axillary artery.