How long does swelling last after knee replacement?

Swelling is normal after knee replacement because the tissues around the joint are healing. It is often most noticeable during the first few weeks and may extend into the lower leg or ankle. The swelling should gradually reduce, but mild swelling can continue for several months. Some patients notice that the knee remains slightly larger than the other knee even after recovery has progressed.

Swelling may increase after walking, exercise, prolonged standing, or later in the day. Resting between activities, raising the leg, using ice as advised, and completing the recommended exercises can help. A pillow should not be left directly under the knee in a bent position for long periods because this may make it harder to fully straighten the knee. Recovery differs between patients, so the amount of swelling should be judged by its overall trend rather than by one particular day.

Seek medical advice if swelling suddenly increases, becomes increasingly painful, or is associated with calf tenderness, wound discharge, worsening redness, fever, chest pain, or breathing difficulty. These symptoms may indicate infection or a blood clot. Dr. Atul Mishra and the ASIC Clinic team can assess whether the swelling is part of normal healing or requires further examination.