During intra-articular knee injection of synvisc one, the plastic adapter between the syringe and needle that is pre-assembled by the manufacturer became disconnected (it is not supposed to be able to come apart) resulting in leakage of synvisc from the syringe as opposed to intra-articular injection.Injection was stopped at this point and the syringe and adapter were removed, leaving the needle in place in the knee.A new syringe of synvisc one was opened and attached to the needle and the new medication was injected without further complication.Sterile technique was able to be maintained and there was no apparent harm to the patient.Diagnosis or reason for use: osteoarthritis knee.
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