UCSD Musculoskeletal Radiology


MSK Classifications

Kuhn classification of acromion fractures

Type I acromion fractures are nondisplaced and include

    type IA (avulsion)

    type IB (complete fracture).


Type II are displaced, but do not reduce the subacromial space.


Type III cause a reduction in subacromial space.

    type IIIA do not involve teh glenoid

    type IIIB involve the glenoid


( Kuhn JE, Blasier RB, Carpenter JE. Fractures of the acromion process: a proposed classification system