Overview Alvimopan and Ileus in PSF Status: Completed Trial end date: 2019-01-01 Target enrollment: Participant gender: Summary The purpose of the study is to determine with Alvimopan reduces the incidence of post operative ileus in patients who undergo posterior spinal fusion. Phase: N/A Details Lead Sponsor: Washington University School of MedicineCollaborators: Barnes-Jewish HospitalOrthopedic Research and Education FoundationTreatments: Alvimopan