Knee Pain and Joint Replacement Surgery: When Should You See an Orthopedic Surgeon?

Understanding Knee Joint Pain

The knee is a hinge joint where the thigh bone (femur) meets the shin bone (tibia), with the kneecap (patella) in front. The ends of the bones are covered in smooth cartilage that allows frictionless movement. When cartilage wears away, the bones rub against each other, causing pain, stiffness and swelling.

The most common cause is osteoarthritis, a wear-and-tear condition that becomes more common after 50 and is more frequent in women. Other causes include rheumatoid arthritis, post-traumatic arthritis after a fracture or ligament injury, avascular necrosis, and deformities such as bow legs or knock knees that overload one side of the joint. Being overweight places additional stress on the knee, since each step transmits several times body weight through the joint.

Before Considering Surgery: Non-Surgical Treatment

Most patients try conservative options first, and these often delay or even avoid the need for surgery.

• Weight management: losing even 5 kg can noticeably reduce knee load and pain.
• Physiotherapy and exercise: strengthening the thigh muscles, particularly the quadriceps, supports the joint. Low-impact activities such as cycling, swimming and walking are helpful.
• Pain relief medicines: paracetamol and short courses of anti-inflammatory tablets or gels, used under medical advice.
• Walking aids and footwear: a stick in the opposite hand, cushioned shoes and knee braces can reduce load.
• Injections: corticosteroid injections can give temporary relief, while hyaluronic acid or platelet-rich plasma may help some patients, though results vary.
• Arthroscopy and realignment surgery: in selected younger patients, procedures such as osteotomy can correct alignment and preserve the natural knee.
• Lifestyle modifications: avoiding deep squatting, floor sitting and heavy climbing where possible.

When Is Knee Replacement Recommended?

Surgery is considered when:

• Pain is severe and persistent, interfering with daily activities such as walking, getting up from a chair or climbing stairs.
• Pain disturbs sleep, even at rest.
• Stiffness or deformity is progressing, such as a visibly bowed leg.
• X-rays show advanced joint damage, such as loss of joint space.
• Non-surgical treatments no longer give adequate relief.
• Your general health is good enough to undergo anaesthesia and recover.

Age is not the deciding factor. Patients in their sixties, seventies and even eighties do well when the indications are right. The decision rests on pain, function and quality of life, not on the date of birth.

Types of Knee Replacement

Total knee replacement (TKR). The damaged surfaces of the femur and tibia, and sometimes the kneecap, are removed and replaced with metal and medical-grade plastic components. It is the most common operation.

Partial (unicompartmental) knee replacement. Only the damaged part of the knee is replaced when arthritis is confined to one compartment, preserving more natural bone and ligaments.

Bilateral knee replacement. Both knees are replaced in the same sitting or in two stages. This may be considered in selected fit patients with severe disease in both knees, after careful evaluation.

Revision knee replacement. A repeat operation to replace or adjust a worn or loosened implant.

Robotic-assisted or computer-navigated surgery. These techniques help the surgeon plan and position implants accurately. They can improve precision, though the surgeon's skill and experience remain the most important factors.

Preparing for Surgery

Good preparation improves results.

1. 1Medical evaluation. Blood tests, ECG, chest X-ray and a review of conditions like diabetes, blood pressure, thyroid and heart disease.
2. 2Optimising health. Blood sugar and blood pressure should be controlled, anaemia corrected, and smoking stopped.
3. 3Medication review. Blood thinners and some arthritis medicines may need to be paused or adjusted.
4. 4Pre-habilitation. Learning leg exercises and how to use a walker before surgery speeds recovery.
5. 5Home preparation. Arrange a raised toilet seat, a chair with arms, non-slip mats in the bathroom, and clear pathways. Western-style toilets are easier after surgery.
6. 6Planning support. Arrange a family member to help for the first few weeks.
7. 7Dental and skin infections. Any active infection should be treated beforehand to lower the risk to the new joint.

The Operation and Hospital Stay

The operation usually takes one to two hours under spinal or general anaesthesia, often combined with a nerve block for pain relief. The surgeon makes an incision over the knee, removes the damaged surfaces, shapes the bones, and fixes the implants, using bone cement in most cases. After checking stability and movement, the wound is closed.

Most patients stay in hospital for two to four days. Nurses and physiotherapists help you stand and take a few steps with a walker, often within hours of surgery. Early movement is vital; it reduces stiffness, prevents blood clots and speeds recovery. Blood-thinning medicines, compression devices and leg exercises further reduce the risk of clots.

Recovery Timeline

Every patient recovers at a different pace, but a general pattern looks like this.

• First two weeks: walking with a walker or crutches, controlling pain and swelling, performing prescribed exercises several times a day, and caring for the wound.
• Weeks two to six: progressing to a stick, climbing stairs with support, regaining bending to about 90 to 110 degrees, and returning to light household activities. Many patients can resume driving after four to six weeks if comfortable and off strong pain medicines.
• Weeks six to twelve: walking without aids, improved strength and bend, and return to most daily activities and desk work.
• Three to twelve months: swelling and tenderness gradually settle, strength builds and the knee feels increasingly natural. Full recovery can take up to a year.

Physiotherapy is the backbone of recovery. Skipping exercises is the most common reason for poor results, and the knee can stiffen quickly if you do not keep moving.

Risks and Complications

Knee replacement is generally safe, but risks exist and your surgeon will discuss them.

• Infection of the wound or the joint, which is uncommon but serious.
• Blood clots in the leg veins or lungs.
• Stiffness or limited bending.
• Persistent pain or numbness around the scar.
• Implant loosening or wear over many years.
• Instability or fracture around the implant.
• Anaesthetic complications and effects on pre-existing medical conditions.

Choosing an experienced surgical team and a hospital with strong infection control, anaesthesia and ICU backup reduces these risks.

How Long Does a Knee Replacement Last?

Modern implants typically last 15 to 20 years or more in many patients, and some last longer. Longevity depends on your weight, activity, bone quality and care of the joint. Younger, more active patients may eventually need a revision operation, which is more complex than the first, so a first replacement should be done at the right time and with good technique.

Living With a New Knee

• Stay active with walking, swimming, cycling and gentle gym work.
• Avoid high-impact activities such as running and contact sports unless your surgeon approves.
• Maintain a healthy weight.
• Avoid kneeling and deep squatting if advised, and use a commode-type toilet if floor-level options are uncomfortable.
• Treat infections elsewhere in the body promptly, and tell any dentist or doctor that you have an artificial joint.
• Attend regular follow-up and X-rays as scheduled.

Care at Trustmed Hospital

At Trustmed Hospital in Badshahpur, Gurugram, our orthopaedics department evaluates knee pain thoroughly, tries non-surgical options first and recommends surgery only when it is truly needed. Our operation theatres, physiotherapy team and private rooms support a smooth stay, and our insurance desk helps families plan the cost. Book an appointment for a knee assessment.

Key Takeaways

• Knee replacement is recommended when pain and stiffness persist despite weight loss, physiotherapy, medicines and injections.
• The decision depends on pain, function and X-ray findings, not on age alone.
• Most patients walk with support within a day, and recovery continues over three to twelve months.
• Regular physiotherapy after surgery is the single biggest factor in a good result.

Quick Checklist

1. 1Strengthen your thigh muscles and lose excess weight before surgery.
2. 2Prepare your home with a raised toilet seat, chair with arms and clear pathways.
3. 3Control diabetes and blood pressure well in advance.
4. 4Plan help for the first two to four weeks after surgery.

Frequently Asked Questions