Robotic knee surgery is a modern and clinically advanced option that supports precision and personalisation, but understandably, it also raises many questions. If you’re considering robotic-assisted knee replacement with a specialist knee surgeon in Sydney, you may be wondering what to expect, what to avoid, and whether it’s right for you.
Some questions are easy to ask. Others feel too personal or “silly”, but all of them matter. Gaining a clear understanding of how robotic knee surgery works can help you feel more confident in the process and better prepared for the decisions ahead.
In this guide, we answer the most common (and often unspoken) questions patients ask before robotic knee surgery. The answers below are designed to help you feel informed, reassured, and well-prepared, so you can move forward with clarity and confidence.
Q1. Do I really need robotic knee surgery, or can I wait?
It’s normal to hesitate before committing to surgery. Robotic knee surgery, whether total or partial knee replacement, is typically considered when knee arthritis causes ongoing pain or restricts daily function, despite physiotherapy, medications, or injections.
There’s no “perfect” age or moment, but clinical signs such as worsening stiffness, sleep disruption, or difficulty walking short distances may indicate it’s time. Your decision will be based on your imaging, symptoms, history, and goals. It’s never rushed.
Delaying too long can lead to muscle weakness or joint deformity, which may affect your long-term outcomes. That’s why timely assessment is key, even if you don’t proceed right away.
Q2. Is robotic-assisted surgery really better, or just high-tech hype?
It’s fair to ask whether robotic surgery is just a trend. But systems like Mako Total Knee SmartRobotics™ and VELYS™ Robotic-Assisted Solution are not gimmicks; they’re tools that support surgical precision.
Mako uses pre-operative CT imaging to create a detailed 3D plan. VELYS, on the other hand, is imageless and builds a model intra-operatively. Both systems are used by Dr Jonathan Negus in Sydney and assist with accurate implant placement and soft tissue protection.
The decision to use robotics is based on clinical benefit, not marketing. These systems are integrated into the surgical workflow to help achieve consistency and control.
Recognising the benefits of robotic knee surgery—such as enhanced alignment accuracy or soft tissue preservation—can provide useful context for how they might align with your recovery goals and care plan.
Q3. What exactly does the robot do, and what does the surgeon do?
The robot never operates on its own. It enhances your surgeon’s control, providing real-time data and guiding tools to match your unique knee anatomy.
The surgeon performs every part of the procedure and makes all clinical decisions. The robotic system functions like advanced GPS, supporting visibility and precision, but always under expert human hands.
You’re not being operated on by a machine, you’re being treated by a trained specialist using advanced tools to personalise your care.
Q4. Will my surgery plan change while I’m asleep?
A personalised plan is created before surgery based on your imaging and examination. That plan is followed closely during the operation.
If an adjustment is required, such as switching from a partial to a total knee replacement, it would only happen if medically necessary and previously discussed. Informed consent covers all possible outcomes.
Nothing is done without your prior understanding and agreement. Your surgeon works with full transparency throughout.
Q5. Will I be in less pain because it’s robotic?
Some patients experience less pain in the early stages of recovery due to more precise implant positioning and reduced soft tissue trauma. However, it’s normal to have some discomfort in the first few weeks.
Pain is managed with medication, physiotherapy, and a tailored recovery plan. Robotic systems help create the conditions for smoother healing, but they don’t eliminate pain entirely.
You’ll also be guided on safe movement, icing, and rest routines that complement your pain relief plan.
Q6. How long before I can walk, drive, or feel normal again?
Most people begin walking with assistance within 1–2 days of surgery and go home after 2–3 days, depending on their progress. Driving is usually allowed 4–6 weeks later, depending on which leg was operated on and whether you can brake safely.
Full recovery can take several months. While you may regain excellent function, the knee may still feel different from your natural joint, especially early on. Some describe sensations like tightness or a “mechanical” feeling during certain movements.
It’s a gradual journey. Your progress will depend on factors like age, pre-surgery fitness, and how consistently you follow your rehab plan.
Q7. What can I do before surgery to help my recovery?
Preparing well can improve your recovery significantly. Focus on:
- Strengthening your legs through prehabilitation exercises
- Managing general health (e.g. blood pressure, blood sugar, quitting smoking if applicable)
- Organising meals, transport, and home support in advance
- Setting up your space with mobility aids like grab rails or a raised toilet seat
Even light walking or cycling before surgery can boost strength and circulation, both important for a safer, smoother recovery.
Q8. Will I need help at home after surgery?
Yes, most people need some support for 1–2 weeks after coming home. This might include help with meals, shopping, personal care, or transport.
Hospitals provide mobility training, equipment, and physiotherapy before discharge. If you live alone, your care team can help arrange short-term rehab or home support through your insurer or hospital coordinator.
Planning ahead reduces stress and lowers the risk of complications like falls or fatigue.
Q9. Can I shower and use the toilet after surgery?
Yes, usually within the first few days, depending on your mobility and dressing. Waterproof dressings allow gentle showering, and nurses assist until you’re steady.
Toileting may require support early on, or the use of equipment like a raised seat. Most regain independence quickly with physiotherapy and safe movement strategies.
Your hospital team will show you how to do these activities safely before discharge, so you’re prepared at home.
Q10. What if I can’t sleep after surgery?
Sleep disruption is common during early recovery. Pain, medication, stiffness, and changes to routine can all contribute.
Strategies that may help include:
- Elevating and icing your knee
- Taking medication as prescribed
- Avoiding long daytime naps
- Creating a dark, quiet sleep environment
Sleep tends to improve as pain settles and your routine stabilises, but speak to your care team if it’s significantly affecting your wellbeing.
Q11. What if I feel down or regret having surgery?
It’s natural to feel overwhelmed, anxious, or even uncertain after major surgery, especially during the initial weeks of recovery. Emotional healing takes time, too.
Preparing well beforehand, understanding what to expect, and having a supportive care team can reduce the risk of regret. If low mood persists, your GP or surgeon can refer you for additional support. You’re not alone in the process.
Talking openly about how you’re feeling is encouraged, and emotional support is a valid and important part of recovery.
Q12. Can I still have sex after surgery?
Yes, once you feel comfortable, safe, and mobile. Most people resume sexual activity around 6–8 weeks after surgery.
Start slowly and avoid positions that strain the knee. If you’re unsure, respectful guidance is available from your physiotherapist or care team.
It’s okay to bring this up during your post-op review; your surgeon can answer without judgment.
Q13. What am I not allowed to do after surgery?
In the first few weeks, you should avoid:
- High-impact activities like running or jumping
- Twisting or pivoting on your operated leg
- Driving before medical clearance
- Skipping physiotherapy or recovery milestones
You’ll also be guided on when and how to safely return to walking, stairs, work, or low-impact sports, so you’re never left guessing.
Q14. What if something goes wrong with the robot during surgery?
Robotic-assisted surgery systems are designed with built-in safety features. If a technical issue arises, your surgeon can immediately revert to traditional instruments without compromising your outcome.
The surgeon remains fully in control throughout the procedure; you are never reliant on the machine.
Backup plans are always in place, and your safety is prioritised above all else.
Q15. Is robotic surgery safe if I have other medical conditions?
Many people with chronic health conditions, such as diabetes, hypertension, or heart disease, can still undergo robotic-assisted knee replacement, provided those conditions are well-managed.
Your GP and surgeon will assess your overall health, plan around any risks, and coordinate care with specialists if needed.
In some cases, you may need additional medical clearance or pre-operative optimisation, which is part of a safe, coordinated approach.
Q16. Is robotic knee surgery available at my hospital?
Not all hospitals currently offer robotic systems. In Dr Jonathan Negus’s Sydney-based practice, robotic knee surgery is available at several locations.
From mid-August 2025, Norwest Private Hospital will begin offering robotic total knee replacements to most eligible privately insured patients. Your surgeon or coordinator can confirm where your surgery will take place.
Availability may also depend on your health fund and the type of surgery you need. These details are confirmed during planning.
Q17. Does robotic knee surgery cost more?
No, not in this practice. In Dr Jonathan Negus’s practice and at the hospitals where he operates, there is no additional charge for robotic-assisted surgery compared to standard methods.
Surgeon fees typically fall between $3,000 and $8,000, depending on the type of procedure and your level of private insurance. Medicare and health fund rebates may apply.
Other hospitals or states may charge differently, so always check directly to avoid confusion.
Q18. Do I need a CT scan for robotic surgery?
It depends on the robotic system being used:
- Mako requires a pre-operative CT scan to create a detailed 3D model
- VELYS does not require a CT; it builds a personalised model during surgery
Your surgeon will let you know which system is planned and whether additional imaging is needed.
These details are explained early in your planning to ensure everything is clear and streamlined.
No Question Is Too Small
Whether it’s about walking, pain, sleep, or personal comfort, every question deserves a respectful answer.
Robotic knee surgery is designed to support precision, safety, and customisation. But more importantly, your experience should feel human, informed, and personal.
If you’re ready for clear answers and expert care, book a consultation with Dr Jonathan Negus, a specialist knee surgeon in Sydney, to discuss whether robotic knee surgery is right for you. No pressure, just personalised guidance.
Get in touch with our team today to discuss your next steps.
Frequently Asked Questions (FAQs)
1. Can I ask my surgeon about doing both knees at once?
Yes, if you have arthritis in both knees, it’s reasonable to ask whether a bilateral knee replacement is an option. Before recommending the procedure, your surgeon will assess your overall health and how well you are likely to recover.
2. Should I tell my surgeon if I travel often or work in security?
Yes, letting your surgeon know about frequent travel or workplace metal detection can help set expectations. Knee implants may trigger airport scanners, but this is safe and manageable.
3. Can I ask how long my knee replacement will last?
Absolutely. Most robotic knee replacements are designed to last 15–20 years or more, depending on your age, activity level, and overall joint health. Your surgeon can explain what to expect in your specific case.
4. Can I discuss anaesthetic options with my surgeon or anaesthetist?
Yes, it’s encouraged. Most patients receive a spinal anaesthetic combined with sedation, though your anaesthetist and surgeon will determine the safest approach based on your medical background and personal preferences.
5. Is robotic surgery used for all types of knee operations?
Not all. Robotic assistance is used for knee replacements (total and partial), but not for procedures like ACL repair or knee arthroscopy. If you’re unsure what type of surgery you need, your surgeon can walk you through the differences.
