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Table 1 Classification of fragility fractures according to Rommens and Hofmann

From: A retrospective study about functional outcome and quality of life after surgical fixation of insufficiency pelvic ring injuries

FFP-type

Description

n

1: Anterior pelvic ring injury only

a: isolated unilateral anterior disruption

b: isolated bilateral anterior disruption

2: Non-displaced posterior injury

a: isolated, non-displaced sacral fracture without involvement of the anterior pelvic ring

28

b: non-displaced sacral crush with anterior disruption

3

c: non-displaced sacral, iliosacral or ilium fracture with anterior disruption

2

3: Displaced unilateral posterior injury

a: displaced unilateral iliac fracture

3

b: displaced unilateral iliosacral disruption

10

c: displaced unilateral sacral fracture

2

4: Displaced bilateral posterior injury

a: bilateral iliac fracture or bilateral iliosacral disruption

17

b: bilateral sacral fracture, spinopelvic dissociation

3

c: combination of different dorsal instabilities

15

  1. FFP fragility fractures of the pelvis