Overview Imaging of Osteonecrosis With Ferumoxytol-Enhanced MRI Status: Enrolling by invitation Trial end date: 2022-01-01 Target enrollment: Participant gender: Summary The goal of the project is to evaluate osteonecrosis before and after decompression surgery with ferumoxytol-enhanced MRI. Phase: Phase 4 Details Lead Sponsor: Stanford UniversityTreatments: Ferrosoferric Oxide