When Is Knee Replacement Necessary? A Complete Guide

By Dashvanth Healthcare Medical Team · Reviewed by our specialists · East Delhi

What Is Total Knee Replacement?

Total knee replacement (TKR), also called total knee arthroplasty, is a surgical procedure where damaged knee joint surfaces are replaced with metal and plastic implants. It is one of the most successful surgeries in modern medicine, restoring mobility to patients with severe knee arthritis.

Signs You May Need Knee Replacement

• Severe knee pain that limits daily activities — walking, climbing stairs, rising from a chair
• Moderate to severe knee pain at rest, even at night
• Chronic knee inflammation and swelling unrelieved by medication
• Knee deformity — bowing in or out
• Failed non-surgical treatments for 6+ months (physiotherapy, injections, medications)

Who Is a Good Candidate?

Most candidates are 60–80 years old, but age alone is not the criterion. Younger patients with severe post-traumatic arthritis or inflammatory joint disease may also benefit. Your orthopaedic surgeon will assess X-rays, clinical symptoms, and activity goals.

Non-Surgical Alternatives to Try First

• Physiotherapy and quadriceps strengthening
• Weight loss (every kg lost reduces knee load by 4×)
• Corticosteroid or hyaluronic acid injections
• PRP (Platelet-Rich Plasma) therapy
• Knee braces and walking aids

The Surgery: What to Expect

TKR takes 1.5–2 hours under spinal or general anaesthesia. You will be walking the next day with a physiotherapist. Hospital stay is 3–5 days. Most patients return to independent living in 4–6 weeks and full activity in 3–6 months.

Recovery Tips

• Follow your physiotherapy programme religiously
• Use ice packs to reduce swelling
• Elevate leg when resting
• Avoid high-impact activities (running, jumping) for 6 months
• Annual follow-up with your surgeon

Frequently Asked Questions