Knee replacement surgery is a common procedure in modern medicine. For many residents in Singapore suffering from chronic joint pain, it represents a turning point, moving away from daily discomfort and toward a life of renewed activity. However, a successful outcome isn’t just about the hour spent in the operating theatre; it is about understanding the whole journey.
By aligning your expectations with the reality of the procedure, you can approach your surgery with confidence. This guide breaks down the essential information you need to make an informed decision for your health and mobility.
It is natural to feel some apprehension about surgery. In Singapore, orthopaedic standards can be strictly regulated, and complications are statistically low. However, being aware of potential risks allows you to be a proactive partner in your own healing.
One of the primary focuses after surgery is maintaining healthy blood flow. Because you will be less mobile initially, there is a small risk of blood clots. To mitigate this, your care team will use a combination of:
Surgeons follow rigorous sterile protocols to protect your new joint. While minor surface infections can occasionally occur around the incision, they are usually handled easily with a course of antibiotics. Deep joint infections are much rarer but are taken very seriously, which is why your surgical team will provide clear instructions on wound care and hygiene.
The knee is a complex network of nerves. It is common to experience some temporary numbness or a “pins and needles” sensation around the surgical scar. In most cases, this resolves as the body heals. While significant nerve injury is rare, your orthopaedic surgeon may discuss the specific anatomy of your knee to ensure you understand how the procedure is performed.
Before any surgery, a “Pre-Admission Screening” is standard practice in Singapore. This ensures that your heart, lungs, and blood sugar levels are optimised. By addressing any underlying health issues before the procedure, the risks associated with anaesthesia are significantly minimised.
Understanding the recovery timeline is a helpful way to stay motivated. While every patient heals at a different pace, having a general roadmap helps you plan your return to work and social life.
Your recovery begins the moment you wake up. The focus is on pain management and “waking up” the muscles. You may likely work with a physiotherapist to stand or take a few steps with a walker. Early movement is a key factor in supporting long-term recovery.
During this phase, you will transition from hospital care to home recovery. You may notice the surgical swelling beginning to subside, and your range of motion will improve. This is the “work” phase of recovery, where consistent physiotherapy sessions help you regain the ability to bend and straighten your leg.
By the three-month mark, most patients are walking comfortably without aids. You may still feel some stiffness in the mornings or after a long day, but the sharp “bone-on-bone” pain of arthritis is usually gone. This is when patients often report they can finally enjoy walks at the Botanic Gardens or shopping without needing to sit down every few minutes.
A knee replacement is a sophisticated piece of medical engineering, but it is not a “natural” knee. The goal of the surgery is to provide a pain-free joint for daily living and moderate recreation.
Most patients return to active lifestyles, including:
Modern implants offer suitable flexibility. Most patients can easily navigate stairs, drive, and sit comfortably. However, deep squatting or prolonged kneeling may feel “different” or slightly uncomfortable due to the pressure on the prosthetic. Many patients find that using a small cushion for kneeling or adjusting their squatting technique makes these tasks perfectly manageable.
One common question patients ask is, “How long will it last?” Thanks to advancements in materials like highly cross-linked polyethene and specialised metal alloys, today’s implants are more durable than ever.
For the vast majority of patients, a single knee replacement may last 15 to 25 years. Factors that influence this include your weight, your activity level, and the quality of your bone. Regular follow-up appointments, usually once a year or every few years, allow your surgeon to take a quick X-ray and ensure everything is perfectly in place.
If an implant does loosen or wear down after two decades, a “revision” surgery can be performed. While these are more complex than the first surgery, Singapore’s orthopaedic specialists are highly experienced in these procedures, aiming to help patients remain mobile into their later years.
Is knee replacement surgery very painful?
With modern “multimodal” pain management, pain is much better controlled than in the past. You will feel discomfort during your exercises, but this is a sign that your muscles are working and your joints are loosening up. Most patients find the “surgical pain” is much easier to deal with than the “chronic arthritic pain” they had before.
When can I return to work?
This depends on your role. If you work at a desk, you might feel ready to return (perhaps part-time or from home) within 4 to 6 weeks. If your job requires standing or lifting, you may need 3 months to ensure your knee is strong enough to handle the load.
Will I set off metal detectors at the airport?
Yes, it is possible! Modern implants contain metal that may trigger sensitive security scanners. You don’t usually need a “doctor’s note,” as security staff at Changi and other airports are very familiar with joint replacements. Simply inform them before you walk through.
How soon can I travel after surgery?
Short flights may be possible after 6 weeks, but long-haul travel is generally discouraged for the first 3 months. This is to minimise the risk of blood clots associated with sitting in a cramped space for long periods.
Can I still do yoga or pilates?
Absolutely. In fact, these are suitable for maintaining the flexibility and core strength that support your new knee. You may just need to modify certain poses that involve deep kneeling or extreme twisting of the knee joint.
What is the success rate of this surgery?
High satisfaction rates are commonly reported by patients of any elective surgery. Patients mention a significant reduction in pain and a major improvement in their ability to perform daily activities.
Is there an age limit for knee replacement?
There is no strict age limit. Orthopaedic surgeons look at “biological age” and overall health rather than the number on your IC. Patients in their 80s often undergo the procedure successfully, provided their hearts and lungs are healthy enough for the surgery.
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OrthoKau offers comprehensive, patient-centered care for a range of orthopaedic conditions.
Make An EnquiryDeciding to undergo knee replacement surgery is a significant step toward reclaiming your quality of life. While the journey requires a few months of dedication to physical therapy and some minor lifestyle adjustments, the reward is the ability to move through life without the constant shadow of knee pain.
If you find that your world is “shrinking” because you are avoiding stairs, skipping social outings, or relying daily on painkillers, it may be time to discuss your options with an orthopaedic surgeon. Together, you can determine if a knee replacement is the right key to unlocking your active future.
MBBS (S’pore)
MRCS (Ireland)
MMed (Ortho)
FRCSEd (Ortho)
Dr Kau (许医生) is a Fellowship trained Orthopaedic Surgeon with a subspecialty interest in Hip and Knee surgery and has been in practice for more than 15 years.
He is experienced in trauma and fracture management, sports injuries, and joint replacement surgery.
If you have any enquiry, please do get in touch. Leave us a message and we will get back to you shortly.
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