Overview
Revision arthroplasty replaces a failed or worn joint implant.

Indications
Implant loosening, infection, instability, or wear.

Procedure overview
Old components are removed and new implants are placed; bone grafting may be required.

Recovery
Often longer than primary replacement; intensive rehabilitation is common.

Risks and complications
Infection, fracture, and implant failure.

Alternatives
Non‑operative management in limited situations.