open book fracture
Unstable pelvic ring injury with anterior separation resembling an opened book when viewed on X-ray.
Full Definition
A specific type of pelvic ring disruption characterized by separation of the pubic symphysis and sacroiliac joints, creating anterior-posterior instability that resembles an open book on anteroposterior pelvic radiographs. This injury pattern typically results from high-energy anterior-posterior compression mechanisms such as motor vehicle crashes or crushing injuries. The fracture is often associated with significant hemorrhage due to disruption of the pelvic vascular network and requires immediate stabilization with external compression devices or surgical fixation.
Usage
Usage note: Hyphenate as adjective (open-book fracture); describe mechanism and stability.
In Context
- "The open book fracture required immediate pelvic binder application and angioembolization." — Trauma surgery consultation
- "Radiographs demonstrated classic open book fracture with 4 cm symphyseal diastasis." — Radiology report