Knee Replacement Recovery — Week by Week

Recovery from a knee replacement is not a single event but a long, uneven curve. The most useful thing to know in advance is that the first two weeks are the hardest, and that this is normal rather than a sign something has gone wrong. Patients who expect that cope with it far better than patients who do not.

The timeline below describes a typical uncomplicated recovery. Your own will differ with your age, fitness, the state of the knee before surgery, and whether one or both knees were replaced.

Straightening matters more than bending

Patients focus on how far the knee bends. Surgeons worry more about whether it goes fully straight. A knee that loses full extension leaves you walking with a permanent slight bend, which is tiring, changes your gait and is very difficult to correct later. Do not prop a pillow under the knee to rest it — put the support under the heel so the knee is encouraged straight.

Physiotherapy is not optional

The surgery creates the opportunity; rehabilitation converts it into a result. The most common cause of a disappointing outcome after a technically good knee replacement is inadequate physiotherapy in the first six weeks. It is uncomfortable, and it is supposed to be. Take pain relief before your session rather than after it.

Ice, elevate, and keep moving

Ice for fifteen to twenty minutes several times a day genuinely reduces swelling, and less swelling means easier movement. Elevate the leg above heart level when resting. Walk little and often rather than in long stretches early on.

Watch for the things that go wrong

Blood clots and infection are the two complications to be alert to. A calf that becomes painful, hot and swollen, or sudden breathlessness or chest pain, needs urgent assessment. Fever, spreading redness or discharge from the wound needs same-day review. Attend to dental infections and treat urinary or skin infections promptly, in the first year especially, since bacteria travelling through the bloodstream can settle on an implant.

Floor sitting, squatting and namaz

This matters enormously in Indian households and is too often skipped in the consent conversation. Many patients regain enough flexion to sit on the floor, particularly with high-flexion implant designs, good pre-operative movement and committed rehabilitation. It cannot be guaranteed. If floor sitting, squatting or namaz is important to you, say so before surgery so that it shapes implant selection and rehabilitation goals rather than becoming a disappointment afterwards.

Work

Desk-based work is usually resumed between four and eight weeks, sooner if you can work from home and elevate the leg. Work requiring prolonged standing, walking or climbing typically needs three months or more. Heavy manual work needs individual discussion.

Driving and travel

Driving usually becomes safe between four and six weeks for a left knee and six to eight weeks for a right knee, once you are off strong analgesics and can perform an emergency stop without hesitation. Air travel is generally avoided for the first six weeks because of clot risk; on longer journeys afterwards, move regularly and stay well hydrated. Metal detectors at airports may be triggered by the implant — an implant card is worth carrying.

Activity

Encouraged: walking, cycling, swimming, gentle gym work, doubles badminton or tennis at recreational level. Discouraged long-term: running as regular exercise, jumping sports, and heavy squatting under load — these accelerate wear. A replaced knee is excellent for living an active life; it is not built for repeated impact.

Deciding between techniques before surgery? See robotic versus conventional. For costs, the itemised breakdown; and to discuss whether you need surgery at all, the knee replacement page.