Rehabilitation after knee replacement.
This guide provides information for patients recovering from knee replacement surgery.
It outlines what to expect during your rehabilitation and gives advice on exercises, movement, and lifestyle considerations to help you achieve the best outcome.
On This Page
Immediate Post-Operative Phase (hospital stay)
During the first few days after surgery, the goals are pain control, wound care, and early mobility.
- Pain management will be provided through medication.
- A physiotherapist will assist you with gentle exercises and walking.
- You will begin moving your knee with the help of a continuous passive motion (CPM) machine or gentle bending.
- You will be encouraged to walk with a frame or crutches within 24 hours of surgery.
Early Rehabilitation (Weeks 1–6)
The focus during this period is regaining movement, reducing swelling, and gradually increasing strength.
- Perform exercises as instructed by your physiotherapist (e.g., ankle pumps, straight leg raises, gentle knee bends).
- Aim to bend your knee to at least 90 degrees by the end of week 6.
- Practice walking with crutches or a walker, progressing to a cane as you gain strength.
- Avoid sitting for long periods; keep your leg elevated to reduce swelling.
Intermediate Rehabilitation (Weeks 7–12)
At this stage, you should notice improved mobility and reduced pain. The focus is on increasing strength, balance, and confidence in walking.
- Continue physiotherapy exercises, including stationary cycling, step-ups, and light resistance training.
- Progress from walking aids to independent walking.
- Aim for a range of motion of at least 110–120 degrees.
- Begin practicing functional tasks such as climbing stairs.
Advanced Rehabilitation (3–6 Months)
Most patients return to many normal daily activities during this phase. Exercise and activity should focus on building endurance and strength.
- Low-impact activities such as swimming, cycling, and walking are encouraged.
- Avoid high-impact sports (e.g., running, jumping, contact sports).
- Continue strengthening exercises, focusing on quadriceps, hamstrings, and hip muscles.
Long-Term Recovery (Beyond 6 Months)
By this stage, you should have regained significant function. Some stiffness or swelling may persist but usually improves over time.
- Continue regular exercise to maintain strength and flexibility.
- Engage in low-impact recreational activities (e.g., golf, bowls, hiking).
- Protect your joint by avoiding repetitive high-impact activities.
Tips for a Successful Recovery
- Follow your physiotherapist’s instructions carefully.
- Take medications as prescribed.
- Keep your wound clean and dry until healed.
- Use supportive footwear.
- Report any signs of infection, severe pain, or unexpected swelling to your healthcare provider.
Activities and Lifestyle
Low-impact activities such as walking, swimming, cycling, and golf are encouraged after recovery. High-impact activities like running and jumping should generally be avoided to prolong implant life.
When to Seek Help
Contact your healthcare team urgently if you experience:
- Sudden severe pain
- Signs of infection (redness, swelling, fever, wound discharge)
- Difficulty moving your leg
- Chest pain or shortness of breath
Every patient’s recovery journey is unique. Following your surgeon’s and physiotherapist’s advice, staying active, and practicing patience are key to a successful outcome.
