Ballottement Apr 2026

This test is highly specific for large effusions but may miss smaller amounts of fluid, which are better detected using the Bulge Sign . 2. Obstetric Ballottement

Suspected knee trauma, arthritis flare-up, or unexplained swelling. Technique: ballottement

The patient lies flat (supine) with the leg fully extended and relaxed. This test is highly specific for large effusions

The patella is already in contact with the bone; there is no sensation of floating or clicking. ballottement