http://www.patient.co.uk/doctor/pelvic-fractures
Rotationally unstable but vertically stable.
B1: 'open book' anteroposterior compression fractures, causing separation of the pubic symphysis and widening of one or both sacroiliac joints.
B2: ipsilateral compression causing the pubic bones to fracture and override.
B3: contralateral compression injury resulting in pubic rami fractures on one side and compression sacroiliac injury on the other side.
Rotationally unstable but vertically stable.
B1: 'open book' anteroposterior compression fractures, causing separation of the pubic symphysis and widening of one or both sacroiliac joints.
B2: ipsilateral compression causing the pubic bones to fracture and override.
B3: contralateral compression injury resulting in pubic rami fractures on one side and compression sacroiliac injury on the other side.
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