The term "split pelvis" is commonly interchanged with various synonyms that describe a condition where the pelvic ring is fractured or separated. Medically known as "pelvic diastasis", this condition can lead to significant pain and instability. Synonyms for split pelvis include pelvic ring disruption, pelvic open book injury, and pelvic symphyseal separation. These terms reflect the severity and nature of the injury, highlighting the separation or disruption of the pelvic bones. It is important to note that these synonyms are used to describe the same condition but may vary depending on the specific medical context or classification system employed.