Which statement correctly describes Type 1 pelvic fracture?

Which statement correctly describes Type 1 pelvic fracture?

• A. Double break in pelvic ring
• B. Single break in pelvic ring
• C. Fracture of the acetabulum
• D. Individual bone fracture

Answer: (D)

The key idea is pelvic fracture stability based on ring involvement. Type 1 describes an isolated fracture of a single pelvic bone with the pelvic ring remaining essentially intact, so the injury is usually stable. If there is a double break in the pelvic ring, the ring is disrupted in two places, making it unstable and more dangerous. An acetabular fracture involves the hip socket rather than a simple pelvic ring fracture, so it doesn’t fit the Type 1 description. Therefore, an isolated fracture of a single bone best matches Type 1.

The key idea is pelvic fracture stability based on ring involvement. Type 1 describes an isolated fracture of a single pelvic bone with the pelvic ring remaining essentially intact, so the injury is usually stable. If there is a double break in the pelvic ring, the ring is disrupted in two places, making it unstable and more dangerous. An acetabular fracture involves the hip socket rather than a simple pelvic ring fracture, so it doesn’t fit the Type 1 description. Therefore, an isolated fracture of a single bone best matches Type 1.