Ballottement -

Performed by applying a sharp tap to the abdominal wall to feel the fetus move away and return. 3. Abdominal Ballottement

This is the most frequent use of the term. It is used to identify a "floating" kneecap, which indicates a moderate-to-large accumulation of fluid (effusion) within the knee joint. ballottement

The clinician inserts two fingers into the vagina and gives a sharp upward tap against the lower segment of the uterus. If the fetus is present and not yet engaged in the pelvis, it will float upward and then fall back, tapping against the clinician’s fingers. Performed by applying a sharp tap to the