Revision Hip Replacement (For previously failed hip joint surgery). Primary hip and knee replacements do fail in for a number of reasons. Regular follow-up is essential for people with primary joint replacements. Revising them is highly specialised surgery requiring extensive training and access to sophisticated implants and hospital facilities. The old implant removed and replaced with new. Surgery may involve use of bone graft and/or custom made implants. Identifying failing joint replacements early is crucial for a successful outcome and therefore a regular follow-up by an orthopedic surgeon is advised.