This pelvic ring fracture is predominantly an open book type (AP compression), but the right sacral fracture seen on CT shows there was a lateral mechanical force also involved in the injury. The combination of the unilateral AP compression injury with a contralateral lateral compression injury is the definition of a "windswept pelvis", although the lateral compression injury component in this case is subtle.

Pelvic ring fractures are unstable injuries and internal fixation is warranted.