When Is Knee Replacement Needed?
Knee replacement is considered for advanced osteoarthritis (or rheumatoid arthritis) when pain limits daily activities and sleep, and conservative treatments — weight management, physiotherapy, medication and injections — no longer give adequate relief. The worn joint surfaces are replaced with metal and plastic components.
Partial vs Total Knee Replacement
Replaces all worn surfaces — the most common option for widespread arthritis. Durable, with most implants lasting 15–20+ years.
Replaces only the damaged compartment — smaller surgery, faster recovery, more natural feel, for suitable single-compartment arthritis.
Robotic-assisted and computer-navigated techniques are increasingly used to improve implant positioning.
Recovery Timeline
- Hospital stay: Typically 2–4 days; walking with aids begins the day after surgery.
- Weeks 2–6: Physiotherapy is key; progress from walking aids to independent walking.
- Months 3–6: Return to most activities; continued strength and range-of-motion gains.
- Up to 12 months: Full benefit and final recovery.
Choosing a Surgeon & Facility
Knee replacement is performed by orthopaedic surgeons in licensed hospitals. Discuss implant choice, whether you're suited to a partial replacement, and the surgeon's approach (including robotic options). Diligent physiotherapy is essential to a good outcome.
Frequently Asked Questions
See who practises in this field: subspecialty focus, credentials and clinic websites, checked against public records.
Browse orthopaedic surgeons →At public hospitals, subsidised total knee replacement can cost roughly S$8,000–S$16,000+ after subsidies and Medisave (varies with means-testing). Private knee replacement typically ranges from S$20,000 to S$35,000+ per knee. It's medically necessary, Medisave-claimable and usually Shield-covered.
Modern knee implants commonly last 15–20 years or more. Longevity depends on activity level, weight and implant type. Many patients never need a revision, while very active or younger patients may eventually require one.
Yes. Knee replacement is medically necessary and Medisave-claimable up to surgical limits, with subsidies in the public sector and Integrated Shield Plan coverage privately. Confirm specifics with the hospital.
Most people walk with aids the day after surgery, go home within a few days, and progress over 6 weeks with physiotherapy. Return to most daily activities takes about 3 months, with continued improvement up to a year.
General information only — not medical advice. Always verify a doctor’s SMC registration and discuss your individual circumstances with a qualified specialist.