Surgical / Economic Effect of the Aquamantys System in Blood Management for Aseptic and Septic Revision TKA

Inclusion Criteria * The patient is greater than 18 years of age * Patients following failure of primary, unilateral TKA * The degree of revision requires the use of an extended osteotomy for component removal * Patient has participated in the informed consent process and has signed an Ethics Committee approved informed consent Exclusion Criteria * Patients presenting with a history of bleeding disorders and/or are on chronic blood anticoagulation therapy * Patients presenting with an internal cardiac defibrillator * Women who are pregnant * Prisoner or transient * Recent history of known narcotic abuse * Any significant psychological disturbance past or present, that could impair the consent process or ability to complete subject self-report questionnaires * Subject unwilling to undergo blood transfusion, if necessary