If patients experience intolerable discomfort, they will be able to contact personnel (24 hours on call) associated with the study to receive an alternate analgesic. The surgeon will determine if the patient is taking the maximum dose and then prescribe additional study drug or a non-study drug as an alternative. If the patient receives pain medication outside of the study protocol, the medication will be recorded, this will be recorded as a protocol violation. If this occurs in more than 20 people during the trial a per-protocol and efficacy analysis will be considered.