Classification

Three distinct types of acromions were identified

Type I

  • Flat (17.1%)
  • Angle of anterior slope: 13.1 degrees
  • Full-thickness rotator cuff tears: 3.0%

Type II

  • Curved (42.9%)
  • Angle of anterior slope: 29.9 degrees
  • Full-thickness rotator cuff tears: 24.2%

Type III

  • Hooked (39.3%)
  • Angle of anterior slope: 26.9 degrees
  • Full-thickness rotator cuff tears: 69.8%

Explanation

Provide an explanation for key principles and pertinent aspects of the classification

Figures

Insert figures illustrating the classification

Reference(s)

Allman FL, 1967. "Fractures and ligamentous injuries of the clavicle and its articulation." J Bone Joint Surg Am 49 (4): 774-84