The stryker revolution cement mixing system with femoral breakaway nozzle (model #: 0606-563-000, lot/batch #: 19348012, exp.Date: 12/01/2020) malfunctioned during a left mediolateral knee arthroplasty.When opened and attached to the pnuematic hose system (vacuum pump), the internal mixing devices disengaged when the vacuum tube was connected to the system.A second device was opened, and the same issue persisted.Multiple cement packets were wasted in the process of troubleshooting the device until the old cement system with the hand mixer was opened to finish the procedure.
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