Evidence brief
Fractures of the Pelvis and Acetabulum
Type A: Stable - intact posterior ring (A1 avulsion, A2 iliac wing, A3 transverse sacral)
Type B: Rotationally unstable, vertically stable (B1 open book, B2 lateral compression ipsilateral, B3 bilateral)
Type C: Rotationally and vertically unstable (C1 unilateral, C2 bilateral, C3 associated acetabulum)
Based on mechanism and structural stability
Guides treatment decisions and prognosis
The Tile classification provides a systematic approach to pelvic ring injuries based on stability. It guides treatment from non-operative (Type A) to external fixation (Type B) to definitive internal fixation (Type C).
Must draw and explain the Tile classification. Key concept: posterior ring integrity determines stability. Type B injuries are the most nuanced - 'open book' vs 'lateral compression'. Know that LC injuries may be more stable than they appear on initial imaging.
Tile M. Fractures of the Pelvis and Acetabulum. Baltimore: Williams & Wilkins; 1984.
Level V
Expert opinion or mechanism-based reasoning