In the Tile classification of pelvic ring injuries, a Type C fracture is defined as:

• A Rotationally and vertically unstable (complete disruption of posterior ligamentous complex) ✓
• B Rotationally unstable, vertically stable with sacroiliac ligaments intact
• C Stable fracture with intact pelvic ring
• D Bilateral anterior ring injury without posterior disruption

Explanation

Tile classification: Type A = stable (intact posterior arch); Type B = rotationally unstable but vertically stable (B1 = open-book/APC; B2 = lateral compression; B3 = bilateral B); Type C = rotationally AND vertically unstable (complete posterior ligament disruption including SI joint, sacrotuberous and sacrospinous ligaments). Type C correlates with Young-Burgess Vertical Shear (VS) pattern. Type C injuries have the highest mortality and blood loss and require early stabilization.

Reference: Maheshwari Essential Orthopaedics, 6th ed.

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Written and medically reviewed by the StethoPrep medical team.