
Living with ongoing knee pain can affect everything from walking and climbing stairs to staying active and independent. For some individuals, knee replacement surgery may be an option when other treatments are no longer effective.
At The Bone and Joint Centre in Singapore, Dr Kevin Koo can assess your condition and discuss whether knee replacement surgery may be an appropriate treatment option.

Knee replacement surgery, also known as knee arthroplasty or total knee replacement surgery, is a procedure used to replace damaged joint surfaces with artificial components. It is commonly performed when arthritis or joint damage causes persistent pain and reduced function that no longer responds adequately to non-surgical treatment.
The goal of surgery is to relieve pain, improve movement and help patients return to daily activities with greater comfort and confidence.
There are a variety of knee replacement surgeries available for people who are diagnosed with chronic knee joint issues. The choice will depend on the severity of the condition, the general health of the patient and the knee specialist’s recommendation.

Persistent symptoms can gradually affect mobility, independence and quality of life. Signs that may indicate the need for further assessment include:
Knee replacement surgery may be suitable for individuals with significant joint damage that affects function and quality of life.
Suitable candidates may include people with:
A comprehensive assessment helps determine whether knee replacement is the most appropriate treatment option.
Knee replacement surgery is intended to relieve symptoms and improve function. Potential benefits may include:
Knee replacement surgery is performed under anaesthesia to ensure patient comfort throughout the procedure. During surgery, damaged cartilage and bone are removed from the affected joint surfaces. These areas are then replaced with artificial components designed to recreate the function of the natural knee joint. Once the implants are positioned and alignment is confirmed, the surgical site is closed.
Knee replacement surgery may be considered when conservative treatments no longer provide adequate relief or help you maintain your usual level of function. If you have undergone treatments such as physiotherapy, medications, injections or activity modification without meaningful improvement, it may be time to seek specialist advice.
A consultation can help determine whether your knee joint has deteriorated to a stage where surgical treatment may be beneficial. Your orthopaedic surgeon will assess your condition, review any imaging studies and discuss the most appropriate treatment options based on your individual needs and goals.
Knee replacement surgery is commonly performed and generally considered safe, especially in the hands of an experienced surgeon. However, as with any operation, there are risks involved, which may include.
Your medical team will work closely to ensure that risks are kept to a minimum and any issues that arise are promptly managed.
Replacement implants are usually made up of long-lasting, medical-grade metal, ceramic, or plastic materials. The most popular choices are cobalt-chromium-based alloys and titanium, which is biocompatible. Plastic prostheses, meanwhile, typically use polyethylene. There are also cases where implants are made up of ceramics such as oxidised zirconium.
Modern knee replacement implants are designed to be durable and long-lasting. Many implants continue to function well for 15 to 20 years or longer, with studies showing that more than 90% remain in place after 15 years. Some research also suggests that approximately 82% of total knee replacements may still be functioning after 25 years.
Implant longevity can vary depending on factors such as activity level, body weight, overall joint health and implant positioning. As a result, many patients may never require a revision procedure during their lifetime.
Knee replacement surgery in Singapore has an average recovery time of six months. Returning to normal and physically taxing activities may take 12 months. During this recovery period, patients should adhere closely to their doctor’s instructions, make necessary lifestyle modifications, take their medications as prescribed, and do their physiotherapy exercises as advised, so as to speed up healing.
A partial knee replacement replaces only the damaged compartment of the knee while preserving healthy portions of the joint. It is typically considered when arthritis is confined to one area of the knee.
A total knee replacement replaces the entire knee joint surface and is generally recommended when arthritis or joint damage affects multiple compartments. The most appropriate procedure depends on the extent of joint degeneration and individual treatment goals.

The knees are a common area of injury and disease, especially as one ages. Should you experience any persistent or debilitating symptoms, visit an orthopaedic clinic with a knee surgeon who can diagnose the condition and administer appropriate treatment promptly.
Headed by Dr Kevin Koo, The Bone & Joint Centre is an established orthopaedic clinic in Singapore that offers medical and surgical treatments for knee problems. Contact our clinic today for more information.
Many patients use a walker for several weeks after surgery, although the exact duration varies depending on strength, balance and recovery progress. Your surgeon will advise when it is safe to transition to a walking stick or walk independently.
Many patients return to daily activities with improved comfort and mobility following recovery. Low-impact activities such as walking, swimming and cycling are often encouraged once healing is complete.
High-impact activities that place excessive stress on the joint may be discouraged. Your surgeon will provide guidance on suitable activities based on your recovery and lifestyle.
The timeline varies depending on your recovery progress and the type of work you perform. Many patients return to office-based work within several weeks, although individual recommendations may differ.
This depends on your overall health, the severity of symptoms and your surgeon's assessment. Some patients may be suitable candidates for bilateral knee replacement, while others may benefit from staged procedures.
Some discomfort is expected after surgery, but pain management strategies and physiotherapy will be recommended to facilitate recovery. Ultimately, the long-term aim of knee replacement is to reduce chronic knee pain and improve function.
It is possible for knee replacement implants to trigger airport metal detectors, as they are typically made from metal alloys such as titanium or cobalt-chromium. If this occurs, airport security personnel may perform additional screening. Modern scanners are designed to assess a variety of medical implants and security staff are familiar with these situations.
In some cases, symptoms may be managed with physiotherapy, medications, injections and lifestyle modifications. However, if these measures no longer provide sufficient relief, surgery may eventually be recommended.
Dr Kevin Koo is a skilled knee replacement surgeon with over 20 years of experience in orthopaedic surgery. Dr Koo completed a fellowship at St. Mary's and Charing Cross Hospitals, Imperial College Healthcare in London, UK, where he worked with internationally recognised orthopaedic surgeons and treated professional athletes and dancers.
His practice interests include foot and ankle surgery, joint replacements, sports and minimally invasive surgery. He has presented extensively at international, regional as well as local conferences including the prestigious American Academy of Orthopaedic Surgeons (AAOS) as well as the British Society for Surgery of the Hand (BSSH) Annual Scientific Meetings.



| Tel. | : +65 6970 5905 |
| Fax | : +65 6970 5906 |
| Mobile | : +65 9898 7781 |
| : hello@bjc.sg , drkevinkoo@bjc.sg |
| Mon - FriMonday to Friday | :8:30am to 5:30pm |
| Sat, Sun and PHSaturday, Sunday & PH | :Closed |
| Tel. | : +65 6970 5905 |
| Fax | : +65 6970 5906 |
| Mobile | : +65 9898 7781 |
| : hello@bjc.sg , drkevinkoo@bjc.sg |
| Mon - FriMonday to Friday | :8:30am to 5:30pm |
| Sat, Sun and PHSaturday, Sunday & PH | :Closed |