What is the medical term for the premature separation of the placenta from the uterine wall?

The medical term for the premature separation of the placenta from the uterine wall is "abruptio placentae." This condition occurs when the placenta detaches from the uterus before delivery, which can lead to serious complications for both the mother and the fetus. Symptoms may include vaginal bleeding, abdominal pain, and contractions. This separation can disrupt the supply of oxygen and nutrients to the fetus and may require immediate medical intervention, such as an emergency cesarean section, depending on the severity and the gestational age of the pregnancy.

The other terms listed refer to different medical conditions. A strain pertains to the stretching or tearing of muscles or tendons. A greenstick fracture is a type of bone fracture that occurs primarily in children, characterized by an incomplete break in the bone. Tension pneumothorax is a life-threatening condition where air becomes trapped in the pleural space and exerts pressure on the lungs, reducing their ability to expand. Thus, explaining the significant difference in conditions helps clarify why "abruptio placentae" is the correct terminology for this specific obstetric complication.