Joint replacement surgery is a procedure where a damaged joint is replaced with an artificial joint. It is performed to relieve pain and improve mobility in individuals with conditions like osteoarthritis or joint trauma. The most common joints replaced are the hip and knee. During surgery, damaged joint surfaces are removed and replaced with prosthetic components. Recovery involves rehabilitation and physical therapy. Risks include infection, blood clots, and implant-related issues. Consultation with an orthopedic surgeon is necessary to determine eligibility for the procedure.