Does the surgeon replace the whole leg?

No. Only the damaged joint surfaces are replaced — the worn ends of the thigh and shin bones — with metal and medical-grade plastic components shaped to mimic the joint’s movement. The muscles, tendons, and most of the surrounding tissue stay.

How long does the operation itself take?

It varies, but a routine total knee replacement commonly takes on the order of one to two hours in the operating room, not counting anaesthesia and recovery-room time.

Will I be in much pain afterwards?

There’s real soreness in the early days, and pain control is part of the plan. Most people find the first weeks the toughest, with steady improvement as physiotherapy builds strength and movement.

When can I walk again?

Usually the same day or the next, with help — a walker or crutches at first. Independent walking and driving take longer and depend on which leg was operated and your surgeon’s clearance.

How long does an artificial knee last?

Modern implants are designed to last many years, but lifespan depends on activity level, weight, and other health factors. Your surgeon can give you the realistic picture for your situation.