For many people who have undergone knee replacement surgery, getting back to an active lifestyle is a top goal. Whether it’s walking in Sydney’s coastal parks, cycling along the Parramatta River, or playing golf, there are many safe sports and activities after knee replacement that can keep you healthy and confident.
Knee replacement surgery, performed by a specialist knee surgeon in Sydney, whether partial or total knee replacement and whether done using traditional techniques or advanced systems such as Mako Total Knee SmartRobotics™ or VELYS™ Robotic-Assisted Solution, is designed to improve mobility and reduce pain. However, the new joint works differently from your natural knee, and certain activities will place more stress on it than others.
This guide explains which sports and activities are generally considered safe, which may be suitable with caution, and which are usually not recommended. It also offers practical tips on how to return to activity without risking your long-term knee health.
Factors That Influence What’s Safe
Before we explore the “yes” and “no” lists, it is important to understand that not all knee replacement surgeries or recoveries are the same. The activities you can safely return to after surgery will depend on several interconnected factors:
- Type of knee replacement – The kind of knee replacement you have can affect how stable your joint is and how much you need to protect it during activities.
- Surgical technique – The way the knee surgery is performed can affect how well the knee moves and feels, which in turn influences the safety of various activities.
- Stage of recovery – Early weeks focus on healing and mobility, with later stages building strength, balance, and endurance.
- Overall fitness and balance – Well-conditioned muscles around the hip, thigh, and calf can act as shock absorbers for the knee joint, reducing strain during movement.
- Prior experience – Returning to an activity you were already skilled at may be safer than taking up a completely new, high-demand sport after surgery.
These considerations form the basis for safe recommendations, so they should always be discussed with your knee surgeon and physiotherapist before making decisions about sport or exercise.
Activities Generally Considered Safe
Once these factors are considered, many people can return to low-impact activities that improve cardiovascular health, strength, and flexibility without overloading the joints.
1. Low-impact cardiovascular exercise
- Walking – Great for building endurance, with Sydney routes like the Bay Run or Bondi to Coogee that suit different distances and slopes.
- Cycling – Stationary bikes are excellent early on, while flat outdoor paths offer variety later in recovery. Proper seat height can reduce unnecessary knee strain.
- Swimming and aqua aerobics – Water supports body weight, making movement easier on the joints while allowing resistance training for muscle strength.
- Elliptical trainers – Provide a smooth, gliding motion that mimics walking without the jarring impact of foot strike.
2. Strength and flexibility training
- Pilates – Focuses on controlled movements and core stability, which help maintain joint alignment.
- Yoga (modified) – Avoid deep knee bends or positions that place excessive load on the joint.
- Light resistance training – Using bands or light weights under supervision can strengthen muscles that support the knee and improve functional stability.
3. Low-impact recreational sports
- Golf – Offers gentle walking and controlled swings, though keeping movements smooth and avoiding sudden pivots is key.
- Lawn bowls – Low physical strain with valuable social interaction.
- Doubles tennis or pickleball – Lower intensity than singles play, especially if played at a relaxed pace.
These activities support joint health, help maintain cardiovascular fitness, and promote overall well-being by keeping the body strong and mobile, all while avoiding the excessive wear that can shorten the life of the implant.
Activities That May Be Safe With Caution
Beyond these low-impact staples, some activities can be enjoyed after knee replacement, but only with proper preparation, good conditioning, and professional approval.
- Hiking on moderate terrain – Great for cardiovascular health and muscle endurance, but uneven surfaces require strong balance and attention to footing.
- Social or ballroom dancing – Improves coordination and flexibility; avoid movements with rapid twists or deep bends.
- Recreational kayaking or paddleboarding – Excellent for upper body fitness and balance, but requires care when entering and exiting the craft.
- Gentle downhill skiing (experienced skiers only) – Smooth, controlled runs on gentle slopes may be possible for those with prior skill, but risk increases with speed and terrain difficulty.
- Gardening – Beneficial for flexibility and gentle strength, especially when using long-handled tools or raised garden beds to avoid kneeling.
With these activities, the aim is not just to participate but to do so in a way that protects the joint. This means pacing yourself, using supportive equipment where possible, and always listening to your body’s feedback.
Activities Generally Not Recommended
While it is possible to remain active after knee replacement, some activities pose a significantly higher risk to the implant and overall joint safety. Avoiding these can help maintain your knee’s function and lifespan.
- Running or jogging over long distances – Repeated high-impact loading can accelerate wear on the implant surface.
- Singles tennis, squash, or pivot-heavy sports – Fast direction changes place torque on the knee, which can compromise stability.
- Contact sports such as rugby, AFL, or soccer – High collision risk and unpredictable movement make these unsuitable for most people post-surgery.
- High-intensity basketball or netball – Jumping and sudden stops combine high impact with abrupt directional shifts.
- Jump-focused workouts like plyometrics or box jumps – Short bursts of intense impact load the knee in ways the implant is not designed to sustain.
By steering clear of these high-impact activities, you reduce the likelihood of injury and help extend the life of your replacement.
Tips for Returning to Sport or Activity Safely
If your chosen activity is in the “safe” or “safe with caution” categories, a gradual, structured return will maximise your success and minimise setbacks:
1. Seek clearance first
Before resuming any sport or exercise, have your surgeon or physiotherapist assess your knee’s healing progress, strength, and flexibility. They can advise on safe starting points, modifications, and whether any extra rehabilitation is needed before increasing your activity level.
2. Progress slowly
Give your knee time to adapt to new demands. Start with short sessions at low intensity, then gradually increase the time, speed, or difficulty. This controlled approach reduces the risk of joint irritation or overuse injuries and helps you build confidence in your movement.
3. Continue strength and balance work
Maintain a regular program of targeted exercises for the legs, hips, and core. Strong muscles provide better support for the joint, while good balance lowers the risk of awkward movements or falls during sport. Incorporating both strength and stability training can help you move more efficiently and safely.
4. Wear suitable footwear
The right shoes for your chosen activity can make a big difference. Supportive, well-fitted footwear helps absorb shock, provides grip, and keeps your foot and knee in proper alignment. Poor footwear can lead to uneven loading and unnecessary stress on the implant.
5. Listen to your body
Pay attention to any signals your knee gives you. Persistent pain, swelling, stiffness, or reduced range of motion are signs to slow down or pause the activity. If symptoms continue, seek professional advice to address the issue before it worsens.
Staying Active Safely After Knee Replacement
Life after knee replacement can include an active, enjoyable lifestyle, and the key is choosing the right activities and pacing your return. Low-impact sports are generally safe; some moderate activities can be reintroduced with care, and high-impact or high-risk sports are best avoided.
If you are considering a return to sport after knee replacement, Dr Jonathan Negus can help guide you through the decision-making process and recommend safe, effective ways to stay active, whether you have had robotic-assisted surgery with Mako or VELYS, or a traditional approach.
Frequently Asked Questions (FAQs)
1. How soon after knee replacement can I start gentle exercise?
Most people begin light movement, such as short walks or gentle range-of-motion exercise, within days of surgery, under the guidance of their physiotherapist. Your timeline will depend on your recovery progress and your surgeon’s recommendations.
2. Can I kneel after a knee replacement?
Kneeling is possible for some people, but it may feel uncomfortable due to scar sensitivity or reduced flexibility. If you need to kneel for work or hobbies, discuss safe techniques with your physiotherapist before trying.
3. Will my artificial knee limit my travel or holiday activities?
In most cases, travel is possible once your surgeon confirms your knee is stable. Choosing activities and tours with manageable walking distances, rest options, and safe surfaces can make trips more enjoyable.
4. Does robotic-assisted knee replacement change what sports I can do?
Robotic systems such as Mako Total Knee SmartRobotics™ or VELYS™ Robotic-Assisted Solution can improve implant positioning and joint balance, which may enhance comfort and stability. However, safe activity guidelines are still important, and Dr Negus will provide personalised recommendations based on your surgery and recovery.
5. Who should I speak to before returning to competitive sport after knee replacement?
It is best to check with your surgeon first, as they can assess your joint’s readiness and advise on training adjustments. Dr Negus works with patients to create a safe plan for returning to higher-level activity when appropriate.
