Do I need a knee replacement?

Not for most people, at least not soon. Knee arthritis is usually managed for years without surgery, using activity modification, weight management, physical therapy, anti-inflammatory measures, and injections. Replacement is reserved for advanced arthritis that limits daily life despite these measures, and the choice of a partial or total replacement depends on how much of the joint is involved.

What injections help knee arthritis?

Several options are used in selected cases. A corticosteroid injection can calm a painful flare, hyaluronic acid aims to improve lubrication in some knees, and PRP, made from a concentrate of the patient's own platelets, is used in selected cases. The right choice depends on the stage of arthritis and the individual knee.

Will arthroscopy fix my arthritis?

Generally no. Arthroscopy has a limited role in knee arthritis itself and is reserved for specific mechanical problems, such as a torn fragment that catches. It does not reverse the underlying cartilage wear, so it is not a routine treatment for arthritis, and conservative care or, eventually, replacement are the mainstays.

Can I slow down knee arthritis?

You can often reduce symptoms and load on the joint. Maintaining a healthy weight lowers the force across the knee, regular low-impact activity and strengthening support the joint, and managing flares early helps. These steps do not regrow cartilage, but they frequently keep an arthritic knee comfortable and active for a long time.

Knee Arthritis, Steven J. Lee, MD

Knee osteoarthritis is the gradual wearing away of the smooth cartilage that caps the bones inside the knee. As the cushion thins, the joint becomes painful, stiff, and prone to swelling, and activity can become harder over time.

It is one of the most common reasons for knee pain in adults. The encouraging part is that most patients are managed well for years without surgery, and when surgery is eventually needed, joint replacement is a reliable way to relieve pain and restore function.

Symptoms

Common findings include:

Deep, aching knee pain that worsens with activity
Stiffness, especially in the morning or after sitting
Swelling and a sense of grinding or catching
Gradual loss of motion and, over time, bowing or knock-knee alignment

How it is diagnosed

Knee arthritis is largely a clinical diagnosis based on the pattern of pain, stiffness, and the exam. Standing X-rays show the degree of cartilage loss and alignment, which helps stage the arthritis and guide treatment. MRI is used selectively when another problem, such as a meniscus tear, is also suspected.

Dr. Lee's approach

Dr. Lee treats knee arthritis conservatively first, and for as long as conservative care controls the symptoms. That means activity modification, weight management, a targeted physical therapy program to build the muscles that support the knee, anti-inflammatory measures, and injections when appropriate, including corticosteroid, hyaluronic acid, and PRP in selected cases.

When arthritis becomes advanced and limits daily life despite these measures, surgery is considered. Depending on how much of the joint is involved, that may be a partial knee replacement, which resurfaces only the worn compartment, or a total knee replacement. Arthroscopy has a limited role in arthritis itself and is reserved for specific mechanical problems, not for the arthritis as a whole.

Non-surgical treatment

Conservative care is the foundation and is continued as long as it controls symptoms:

Activity modification and weight management to reduce load on the joint
Physical therapy to strengthen the muscles that support the knee
Anti-inflammatory measures for symptom control
Injections in selected cases: corticosteroid, hyaluronic acid, and PRP

Surgical treatment

When arthritis is advanced and limits daily life, options include partial knee replacement, which resurfaces only the worn part of the joint, and total knee replacement. Arthroscopy has a limited role in arthritis itself and is reserved for specific mechanical symptoms rather than the arthritis as a whole.

Recovery timeline

Most patients are managed for years without surgery:

Ongoing, non-surgical
Activity modification, weight management, therapy, and injections as needed to control symptoms.
After replacement, weeks 0 to 6
Guided motion, weight-bearing as directed, and progressive strengthening.
Months 3 to 6
Continued strengthening and a return to low-impact activity, with steady gains in comfort and function.

What patients commonly misunderstand

What patients are often surprised by:

Surgery is not the first step. Most knee arthritis is managed well for years with activity modification, weight management, therapy, and injections. Replacement is reserved for advanced arthritis that limits daily life despite these measures.
Arthroscopy does not cure arthritis. Cleaning out an arthritic knee arthroscopically has a limited role and is reserved for specific mechanical problems. It does not reverse the arthritis itself, which is why it is not a routine treatment for it.

This page is general educational content authored by Dr. Lee. It is not a substitute for individual medical advice. Every patient's case is different, book a consultation to discuss yours.

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Knee pain, stiffness, and swelling from arthritis? Most of it is managed without surgery.

Knee arthritis is usually controlled for years with activity modification, weight management, physical therapy, anti-inflammatory measures, and injections. Partial or total knee replacement is reserved for advanced arthritis that limits daily life, and arthroscopy has only a limited, specific role.

Knee Arthritis: managing cartilage wear, surgery only when needed.