Joint replacement is a medical procedure that involves replacing a damaged or worn-out joint with an artificial one. The most commonly replaced joints are the knee, hip, and shoulder. There are many synonyms for joint replacement, such as arthroplasty, joint reconstruction, prosthetic joint replacement, joint implantation, total joint replacement, or partial joint replacement. The choice of terminology may depend on the specific context of the procedure, the type of implant used, or the severity of the condition. Regardless of the terminology, joint replacement surgery is a proven method for relieving pain and restoring mobility in patients with arthritis, injury, or degenerative joint disease.