Do I Need Physiotherapy After Knee Joint Replacement Surgery?

After knee joint replacement surgery, physiotherapy is essential to help you regain strength, mobility and overall function. It reduces pain, restores range of motion, and rebuilds the strength and stability of the new joint — turning a successful surgery into a successful recovery.

Why physiotherapy matters after knee replacement

Surgery replaces the damaged joint surfaces, but it doesn't automatically restore the strength, flexibility and control needed for daily life. Without structured rehabilitation, stiffness and muscle weakness can develop quickly, slowing recovery and limiting the long-term result of the surgery.

What to expect in your recovery

• In hospital — gentle movement typically begins within a day of surgery, focused on managing pain and swelling and starting basic range-of-motion exercises
• Early weeks at home — your physiotherapist will guide you through exercises to reduce swelling, protect the joint, and gradually increase movement
• Progressive strengthening — as healing progresses, exercises shift toward rebuilding strength in the muscles supporting the knee, improving stability and control
• Cold compression therapy — a Game Ready unit can help manage pain and swelling in the early, more acute phase of recovery
• Return to activity — a structured program helps you safely return to walking, stairs, and the activities that matter to you

Typical timeline

Most people see steady improvement over 6–12 weeks, though full recovery and return to higher-level activity can take several months. Your physiotherapist will tailor the pace to your progress, your surgery, and your goals.

Getting the best result from your surgery

Consistency matters more than intensity — following your home exercise program between sessions is one of the biggest factors in a smooth recovery. Your physiotherapist will also help you recognise normal post-surgical discomfort versus signs that need attention, so you can progress with confidence.

If you have knee replacement surgery planned, or are recovering from one now, book an assessment with our physiotherapy team in the Sutherland Shire to put a tailored recovery plan in place.