Knee Replacement Recovery: The First 6 Weeks
The first six weeks after a knee replacement set the tone for everything that follows. Here's what to expect, what to push, and what to leave alone.
Total knee replacement is one of the most successful elective surgeries performed - most patients report a dramatic improvement in pain and function. But the outcome depends heavily on what happens in the weeks after the operation. Early rehabilitation is not optional; it determines how well the new joint settles and how quickly you return to independence.
Days 1-3: Hospital phase
Modern surgical protocols have most patients walking with assistance on the day of surgery or the day after. The physiotherapist in hospital will get you standing, walking with a frame, and beginning to bend the knee. Pain is managed aggressively to allow this movement - don't hold off on asking for pain relief.
Week 1-2 at home: Swelling, extension, and early walking
Swelling is normal and will persist for weeks to months. Ice and elevation (foot above the level of the hip) for 20 minutes every two to three hours is helpful. The most important early goal is regaining full knee extension - a bent knee that can't fully straighten is a significant functional limitation. Heel prop exercises lying on your back are the simplest way to work on this.
Weeks 3-4: Flexion and stair climbing
Bending the knee to 90 degrees by the end of week three is the typical target. Stationary cycling is excellent at this stage - it improves flexion, reduces swelling through the pumping action, and maintains cardiovascular fitness. Stair climbing technique (step up leading with the good leg, step down leading with the operated leg) is introduced.
Weeks 5-6: Building independence
By six weeks most people are walking without a frame, managing stairs independently, and getting in and out of a car. Quad strength remains well below normal and is the primary target for the following three to six months. Progressive resistance training - leg press, step-ups, sit-to-stand repetitions with added load - drives the functional gains from this point.
Most patients reach their full outcome potential at six to twelve months. The early work is what gets you there.
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