23.15

• Shear forces are not restrained and thus can cause instability

  • Susceptible in the anterior, posterior, superior, and infereior planes

  • Glenoid shape and labrum provide these stabilizations

  • Measured shear loads as high as 42% of body weight (60\(^{\circ}\) of abduction in the scapular plane)

FIXME ADD DIAGRAM

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