Ballottement
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Ballottement is a medical sign which indicates increased fluid in the suprapatellar pouch over the patella at the knee joint. To test ballottement the examiner would apply downward pressure towards the foot with one hand, while pushing the patella backwards against the femur with one finger of the opposite hand. A "milking" motion is used with the downward pressure. If a bogginess around the joint occurs, then the test is positive for ballottement.
References
Jones, Betty Davis: Comprehensive Medical Terminology (Third Edition) Thomson Delmar Learning, New York, 2008.
